/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:18:03,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:18:04,047 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 06:18:04,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:18:04,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:18:04,074 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:18:04,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:18:04,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:18:04,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:18:04,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:18:04,078 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:18:04,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:18:04,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:18:04,079 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:18:04,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:18:04,080 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:18:04,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:18:04,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:18:04,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:18:04,081 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:18:04,081 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:18:04,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:18:04,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:18:04,082 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:18:04,082 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:18:04,083 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:18:04,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:18:04,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:18:04,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:18:04,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:18:04,368 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:18:04,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-24 06:18:05,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:18:05,610 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:18:05,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-24 06:18:05,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ddd6f72/09adee0a787d44b999884967c2133c24/FLAG0dd9a0498 [2023-08-24 06:18:05,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ddd6f72/09adee0a787d44b999884967c2133c24 [2023-08-24 06:18:05,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:18:05,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:18:05,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:18:05,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:18:05,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:18:05,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:18:05" (1/1) ... [2023-08-24 06:18:05,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:05, skipping insertion in model container [2023-08-24 06:18:05,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:18:05" (1/1) ... [2023-08-24 06:18:05,998 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:18:06,114 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_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-08-24 06:18:06,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:18:06,254 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:18:06,263 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_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2023-08-24 06:18:06,275 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-24 06:18:06,277 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 06:18:06,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:18:06,311 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:18:06,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06 WrapperNode [2023-08-24 06:18:06,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:18:06,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:18:06,313 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:18:06,313 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:18:06,318 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,353 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-08-24 06:18:06,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:18:06,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:18:06,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:18:06,354 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:18:06,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,364 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,375 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:18:06,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:18:06,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:18:06,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:18:06,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (1/1) ... [2023-08-24 06:18:06,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:18:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:18:06,424 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 06:18:06,427 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 06:18:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:18:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:18:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:18:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:18:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:18:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:18:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:18:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:18:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:18:06,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:18:06,453 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 06:18:06,546 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:18:06,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:18:06,638 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:18:06,643 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:18:06,643 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 06:18:06,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:18:06 BoogieIcfgContainer [2023-08-24 06:18:06,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:18:06,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:18:06,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:18:06,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:18:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:18:05" (1/3) ... [2023-08-24 06:18:06,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125efb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:18:06, skipping insertion in model container [2023-08-24 06:18:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:18:06" (2/3) ... [2023-08-24 06:18:06,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125efb3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:18:06, skipping insertion in model container [2023-08-24 06:18:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:18:06" (3/3) ... [2023-08-24 06:18:06,649 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2023-08-24 06:18:06,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:18:06,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 06:18:06,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:18:06,693 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 06:18:06,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 125 flow [2023-08-24 06:18:06,741 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2023-08-24 06:18:06,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:18:06,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-08-24 06:18:06,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 125 flow [2023-08-24 06:18:06,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2023-08-24 06:18:06,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:18:06,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-24 06:18:06,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2023-08-24 06:18:06,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2023-08-24 06:18:06,770 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-08-24 06:18:06,770 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:18:06,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-24 06:18:06,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-08-24 06:18:08,553 INFO L134 LiptonReduction]: Checked pairs total: 592 [2023-08-24 06:18:08,553 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-08-24 06:18:08,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 06:18:08,570 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;@71b82c29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:18:08,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 06:18:08,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:18:08,573 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-24 06:18:08,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:18:08,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:08,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 06:18:08,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:08,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1761964991, now seen corresponding path program 1 times [2023-08-24 06:18:08,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:08,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246477789] [2023-08-24 06:18:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:08,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:18:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:18:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:18:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246477789] [2023-08-24 06:18:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246477789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:18:08,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:18:08,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 06:18:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641090952] [2023-08-24 06:18:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:18:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:18:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:18:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:18:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:18:08,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 100 [2023-08-24 06:18:08,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-08-24 06:18:08,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:18:08,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 100 [2023-08-24 06:18:08,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:18:08,829 INFO L124 PetriNetUnfolderBase]: 13/40 cut-off events. [2023-08-24 06:18:08,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:18:08,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 40 events. 13/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 7 based on Foata normal form. 3/43 useless extension candidates. Maximal degree in co-relation 72. Up to 19 conditions per place. [2023-08-24 06:18:08,831 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 11 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-08-24 06:18:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 14 transitions, 57 flow [2023-08-24 06:18:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:18:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:18:08,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-08-24 06:18:08,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2023-08-24 06:18:08,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-08-24 06:18:08,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-08-24 06:18:08,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:18:08,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-08-24 06:18:08,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2023-08-24 06:18:08,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-24 06:18:08,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-24 06:18:08,847 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 3 states and 176 transitions. [2023-08-24 06:18:08,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 14 transitions, 57 flow [2023-08-24 06:18:08,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 14 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:18:08,850 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-08-24 06:18:08,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-24 06:18:08,853 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 2 predicate places. [2023-08-24 06:18:08,853 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-08-24 06:18:08,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2023-08-24 06:18:08,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:08,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:18:08,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:18:08,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:08,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1752855910, now seen corresponding path program 1 times [2023-08-24 06:18:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38812726] [2023-08-24 06:18:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:18:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:18:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:18:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38812726] [2023-08-24 06:18:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38812726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:18:08,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:18:08,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:18:08,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923521543] [2023-08-24 06:18:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:18:08,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 06:18:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:18:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 06:18:08,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 06:18:08,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 100 [2023-08-24 06:18:08,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-08-24 06:18:08,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:18:08,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 100 [2023-08-24 06:18:08,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:18:08,955 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-08-24 06:18:08,955 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 06:18:08,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 6/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 2 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2023-08-24 06:18:08,956 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 9 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2023-08-24 06:18:08,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 15 transitions, 70 flow [2023-08-24 06:18:08,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 06:18:08,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 06:18:08,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-08-24 06:18:08,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2023-08-24 06:18:08,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-08-24 06:18:08,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-08-24 06:18:08,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:18:08,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-08-24 06:18:08,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2023-08-24 06:18:08,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-24 06:18:08,959 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-08-24 06:18:08,959 INFO L175 Difference]: Start difference. First operand has 17 places, 11 transitions, 32 flow. Second operand 3 states and 148 transitions. [2023-08-24 06:18:08,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 15 transitions, 70 flow [2023-08-24 06:18:08,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 06:18:08,960 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 51 flow [2023-08-24 06:18:08,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-24 06:18:08,961 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 3 predicate places. [2023-08-24 06:18:08,961 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 51 flow [2023-08-24 06:18:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2023-08-24 06:18:08,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:08,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:18:08,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:18:08,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:08,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:08,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1903195232, now seen corresponding path program 2 times [2023-08-24 06:18:08,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759974423] [2023-08-24 06:18:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:18:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:18:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:18:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759974423] [2023-08-24 06:18:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759974423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:18:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:18:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 06:18:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402339334] [2023-08-24 06:18:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:18:09,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 06:18:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:18:09,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 06:18:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 06:18:09,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 100 [2023-08-24 06:18:09,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:18:09,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 100 [2023-08-24 06:18:09,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:18:09,136 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-08-24 06:18:09,136 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:18:09,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 25 events. 4/25 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 69. Up to 15 conditions per place. [2023-08-24 06:18:09,137 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 10 selfloop transitions, 4 changer transitions 1/16 dead transitions. [2023-08-24 06:18:09,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 95 flow [2023-08-24 06:18:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:18:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:18:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2023-08-24 06:18:09,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2023-08-24 06:18:09,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 165 transitions. [2023-08-24 06:18:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 165 transitions. [2023-08-24 06:18:09,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:18:09,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 165 transitions. [2023-08-24 06:18:09,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-08-24 06:18:09,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,140 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 51 flow. Second operand 4 states and 165 transitions. [2023-08-24 06:18:09,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 95 flow [2023-08-24 06:18:09,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 06:18:09,141 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 54 flow [2023-08-24 06:18:09,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-24 06:18:09,141 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-08-24 06:18:09,142 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 54 flow [2023-08-24 06:18:09,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:09,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:18:09,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:18:09,142 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:09,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:09,142 INFO L85 PathProgramCache]: Analyzing trace with hash -414641235, now seen corresponding path program 1 times [2023-08-24 06:18:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:09,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526847212] [2023-08-24 06:18:09,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:09,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 06:18:09,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 06:18:09,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 06:18:09,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526847212] [2023-08-24 06:18:09,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526847212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 06:18:09,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 06:18:09,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 06:18:09,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826768333] [2023-08-24 06:18:09,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 06:18:09,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 06:18:09,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 06:18:09,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 06:18:09,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 06:18:09,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 100 [2023-08-24 06:18:09,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-08-24 06:18:09,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 06:18:09,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 100 [2023-08-24 06:18:09,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 06:18:09,268 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 06:18:09,268 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 06:18:09,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 15 events. 0/15 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 1/16 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-08-24 06:18:09,268 INFO L140 encePairwiseOnDemand]: 95/100 looper letters, 5 selfloop transitions, 5 changer transitions 0/11 dead transitions. [2023-08-24 06:18:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 11 transitions, 66 flow [2023-08-24 06:18:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 06:18:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 06:18:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2023-08-24 06:18:09,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2023-08-24 06:18:09,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 163 transitions. [2023-08-24 06:18:09,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 163 transitions. [2023-08-24 06:18:09,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 06:18:09,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 163 transitions. [2023-08-24 06:18:09,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 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) [2023-08-24 06:18:09,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 06:18:09,271 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 54 flow. Second operand 4 states and 163 transitions. [2023-08-24 06:18:09,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 11 transitions, 66 flow [2023-08-24 06:18:09,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 56 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-24 06:18:09,272 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 46 flow [2023-08-24 06:18:09,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-08-24 06:18:09,273 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 5 predicate places. [2023-08-24 06:18:09,273 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 46 flow [2023-08-24 06:18:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 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) [2023-08-24 06:18:09,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:18:09,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:18:09,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:18:09,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:18:09,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:18:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 23964701, now seen corresponding path program 1 times [2023-08-24 06:18:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:18:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585057812] [2023-08-24 06:18:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:18:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:18:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:18:09,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:18:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:18:09,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:18:09,313 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:18:09,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 06:18:09,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 06:18:09,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:18:09,315 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-08-24 06:18:09,319 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 06:18:09,319 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 06:18:09,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:18:09 BasicIcfg [2023-08-24 06:18:09,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 06:18:09,344 INFO L158 Benchmark]: Toolchain (without parser) took 3379.69ms. Allocated memory was 369.1MB in the beginning and 459.3MB in the end (delta: 90.2MB). Free memory was 344.1MB in the beginning and 365.9MB in the end (delta: -21.9MB). Peak memory consumption was 69.9MB. Max. memory is 16.0GB. [2023-08-24 06:18:09,345 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory is still 345.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 06:18:09,345 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.25ms. Allocated memory is still 369.1MB. Free memory was 343.6MB in the beginning and 324.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 06:18:09,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.59ms. Allocated memory is still 369.1MB. Free memory was 324.7MB in the beginning and 323.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 06:18:09,347 INFO L158 Benchmark]: Boogie Preprocessor took 23.55ms. Allocated memory is still 369.1MB. Free memory was 323.0MB in the beginning and 321.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 06:18:09,350 INFO L158 Benchmark]: RCFGBuilder took 266.16ms. Allocated memory is still 369.1MB. Free memory was 321.5MB in the beginning and 309.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 06:18:09,352 INFO L158 Benchmark]: TraceAbstraction took 2698.28ms. Allocated memory was 369.1MB in the beginning and 459.3MB in the end (delta: 90.2MB). Free memory was 308.4MB in the beginning and 365.9MB in the end (delta: -57.5MB). Peak memory consumption was 34.2MB. Max. memory is 16.0GB. [2023-08-24 06:18:09,355 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 369.1MB. Free memory is still 345.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 347.25ms. Allocated memory is still 369.1MB. Free memory was 343.6MB in the beginning and 324.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.59ms. Allocated memory is still 369.1MB. Free memory was 324.7MB in the beginning and 323.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.55ms. Allocated memory is still 369.1MB. Free memory was 323.0MB in the beginning and 321.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 266.16ms. Allocated memory is still 369.1MB. Free memory was 321.5MB in the beginning and 309.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2698.28ms. Allocated memory was 369.1MB in the beginning and 459.3MB in the end (delta: 90.2MB). Free memory was 308.4MB in the beginning and 365.9MB in the end (delta: -57.5MB). Peak memory consumption was 34.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 55 PlacesBefore, 15 PlacesAfterwards, 51 TransitionsBefore, 11 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 592 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 269, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 126, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 269, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 126, unknown conditional: 0, unknown unconditional: 126] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, D={4:0}, arg={0:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, D={4:0}, arg={0:0}, arg={0:0}, g=17] [L690] 1 return ((void *)0); [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, D={4:0}, \old(cond)=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: 694]: 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, 72 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=3, InterpolantAutomatonStates: 14, 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, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 06:18:09,367 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...