/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/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 10:59:10,362 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 10:59:10,442 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 10:59:10,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 10:59:10,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 10:59:10,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 10:59:10,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 10:59:10,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 10:59:10,480 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 10:59:10,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 10:59:10,483 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 10:59:10,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 10:59:10,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 10:59:10,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 10:59:10,485 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 10:59:10,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 10:59:10,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 10:59:10,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 10:59:10,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 10:59:10,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 10:59:10,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 10:59:10,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 10:59:10,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 10:59:10,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 10:59:10,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 10:59:10,490 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 10:59:10,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 10:59:10,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:59:10,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 10:59:10,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 10:59:10,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 10:59:10,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 10:59:10,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 10:59:10,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 10:59:10,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 10:59:10,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 10:59:10,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 10:59:10,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 10:59:10,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 10:59:10,836 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 10:59:10,837 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 10:59:10,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2023-08-24 10:59:11,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 10:59:12,162 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 10:59:12,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2023-08-24 10:59:12,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8162fc52d/d5c416e01c744632952f1bce7e96fb7c/FLAG724b61cc6 [2023-08-24 10:59:12,198 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8162fc52d/d5c416e01c744632952f1bce7e96fb7c [2023-08-24 10:59:12,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 10:59:12,204 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 10:59:12,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 10:59:12,206 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 10:59:12,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 10:59:12,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eaf3108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12, skipping insertion in model container [2023-08-24 10:59:12,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,262 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 10:59:12,538 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-08-24 10:59:12,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:59:12,558 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 10:59:12,587 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 10:59:12,589 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-24 10:59:12,600 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2023-08-24 10:59:12,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 10:59:12,652 INFO L206 MainTranslator]: Completed translation [2023-08-24 10:59:12,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12 WrapperNode [2023-08-24 10:59:12,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 10:59:12,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 10:59:12,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 10:59:12,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 10:59:12,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,711 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2023-08-24 10:59:12,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 10:59:12,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 10:59:12,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 10:59:12,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 10:59:12,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,745 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,746 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 10:59:12,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 10:59:12,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 10:59:12,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 10:59:12,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (1/1) ... [2023-08-24 10:59:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 10:59:12,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 10:59:12,784 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 10:59:12,792 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 10:59:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 10:59:12,820 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 10:59:12,820 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 10:59:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 10:59:12,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 10:59:12,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 10:59:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 10:59:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 10:59:12,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 10:59:12,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 10:59:12,825 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 10:59:12,979 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 10:59:12,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 10:59:13,161 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 10:59:13,168 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 10:59:13,168 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 10:59:13,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:59:13 BoogieIcfgContainer [2023-08-24 10:59:13,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 10:59:13,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 10:59:13,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 10:59:13,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 10:59:13,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 10:59:12" (1/3) ... [2023-08-24 10:59:13,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d83da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:59:13, skipping insertion in model container [2023-08-24 10:59:13,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 10:59:12" (2/3) ... [2023-08-24 10:59:13,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d83da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 10:59:13, skipping insertion in model container [2023-08-24 10:59:13,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 10:59:13" (3/3) ... [2023-08-24 10:59:13,178 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-08-24 10:59:13,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 10:59:13,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 10:59:13,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 10:59:13,252 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 10:59:13,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 87 transitions, 198 flow [2023-08-24 10:59:13,319 INFO L124 PetriNetUnfolderBase]: 1/84 cut-off events. [2023-08-24 10:59:13,319 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 10:59:13,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 1/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-08-24 10:59:13,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 87 transitions, 198 flow [2023-08-24 10:59:13,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 67 transitions, 149 flow [2023-08-24 10:59:13,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 10:59:13,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-24 10:59:13,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 67 transitions, 149 flow [2023-08-24 10:59:13,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 67 transitions, 149 flow [2023-08-24 10:59:13,361 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2023-08-24 10:59:13,361 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 10:59:13,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 67 events. 0/67 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-24 10:59:13,386 INFO L119 LiptonReduction]: Number of co-enabled transitions 814 [2023-08-24 10:59:15,912 INFO L134 LiptonReduction]: Checked pairs total: 1727 [2023-08-24 10:59:15,912 INFO L136 LiptonReduction]: Total number of compositions: 47 [2023-08-24 10:59:15,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 10:59:15,929 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;@202f54e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 10:59:15,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-24 10:59:15,935 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 10:59:15,935 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 10:59:15,935 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 10:59:15,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:59:15,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:59:15,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 10:59:15,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:59:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash -265877263, now seen corresponding path program 1 times [2023-08-24 10:59:15,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:59:15,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919173239] [2023-08-24 10:59:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:59:15,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:59:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:59:16,269 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 10:59:16,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:59:16,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919173239] [2023-08-24 10:59:16,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919173239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:59:16,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:59:16,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 10:59:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901176236] [2023-08-24 10:59:16,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:59:16,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:59:16,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:59:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:59:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:59:16,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-08-24 10:59:16,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 10:59:16,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:59:16,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-08-24 10:59:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:59:16,422 INFO L124 PetriNetUnfolderBase]: 285/474 cut-off events. [2023-08-24 10:59:16,422 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-24 10:59:16,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 474 events. 285/474 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1667 event pairs, 103 based on Foata normal form. 12/486 useless extension candidates. Maximal degree in co-relation 858. Up to 385 conditions per place. [2023-08-24 10:59:16,428 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-24 10:59:16,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 145 flow [2023-08-24 10:59:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:59:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:59:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 10:59:16,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6243781094527363 [2023-08-24 10:59:16,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 10:59:16,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 10:59:16,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:59:16,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 10:59:16,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 10:59:16,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 10:59:16,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 10:59:16,452 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 55 flow. Second operand 3 states and 251 transitions. [2023-08-24 10:59:16,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 145 flow [2023-08-24 10:59:16,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 133 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 10:59:16,457 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 65 flow [2023-08-24 10:59:16,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 10:59:16,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-24 10:59:16,462 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 65 flow [2023-08-24 10:59:16,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 10:59:16,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:59:16,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:59:16,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 10:59:16,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 10:59:16,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:59:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2006927370, now seen corresponding path program 1 times [2023-08-24 10:59:16,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:59:16,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725093412] [2023-08-24 10:59:16,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:59:16,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:59:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:59:16,559 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 10:59:16,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:59:16,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725093412] [2023-08-24 10:59:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725093412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:59:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:59:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 10:59:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306367862] [2023-08-24 10:59:16,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:59:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 10:59:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:59:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 10:59:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 10:59:16,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 134 [2023-08-24 10:59:16,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 10:59:16,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:59:16,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 134 [2023-08-24 10:59:16,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:59:16,626 INFO L124 PetriNetUnfolderBase]: 68/171 cut-off events. [2023-08-24 10:59:16,627 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 10:59:16,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 171 events. 68/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 634 event pairs, 13 based on Foata normal form. 50/221 useless extension candidates. Maximal degree in co-relation 166. Up to 117 conditions per place. [2023-08-24 10:59:16,628 INFO L140 encePairwiseOnDemand]: 129/134 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-24 10:59:16,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 146 flow [2023-08-24 10:59:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 10:59:16,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 10:59:16,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-24 10:59:16,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5696517412935324 [2023-08-24 10:59:16,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-24 10:59:16,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-24 10:59:16,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:59:16,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-24 10:59:16,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 10:59:16,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 10:59:16,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 10:59:16,634 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 65 flow. Second operand 3 states and 229 transitions. [2023-08-24 10:59:16,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 146 flow [2023-08-24 10:59:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 10:59:16,636 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2023-08-24 10:59:16,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-24 10:59:16,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-24 10:59:16,637 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2023-08-24 10:59:16,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 10:59:16,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:59:16,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:59:16,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 10:59:16,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 10:59:16,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:59:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash 202521017, now seen corresponding path program 1 times [2023-08-24 10:59:16,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:59:16,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394706558] [2023-08-24 10:59:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:59:16,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:59:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:59:16,688 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 10:59:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:59:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394706558] [2023-08-24 10:59:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394706558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:59:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:59:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 10:59:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588481456] [2023-08-24 10:59:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:59:16,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 10:59:16,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:59:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 10:59:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 10:59:16,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 134 [2023-08-24 10:59:16,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 10:59:16,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:59:16,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 134 [2023-08-24 10:59:16,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:59:16,753 INFO L124 PetriNetUnfolderBase]: 75/176 cut-off events. [2023-08-24 10:59:16,753 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 10:59:16,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 176 events. 75/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 32 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 172. Up to 107 conditions per place. [2023-08-24 10:59:16,755 INFO L140 encePairwiseOnDemand]: 130/134 looper letters, 30 selfloop transitions, 4 changer transitions 2/36 dead transitions. [2023-08-24 10:59:16,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 187 flow [2023-08-24 10:59:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 10:59:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 10:59:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 10:59:16,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138059701492538 [2023-08-24 10:59:16,757 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 10:59:16,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 10:59:16,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:59:16,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 10:59:16,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 10:59:16,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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 10:59:16,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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 10:59:16,760 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 4 states and 329 transitions. [2023-08-24 10:59:16,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 187 flow [2023-08-24 10:59:16,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 10:59:16,762 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 79 flow [2023-08-24 10:59:16,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-24 10:59:16,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 10:59:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 79 flow [2023-08-24 10:59:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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 10:59:16,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:59:16,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:59:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 10:59:16,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 10:59:16,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:59:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -797098962, now seen corresponding path program 1 times [2023-08-24 10:59:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:59:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619745590] [2023-08-24 10:59:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:59:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:59:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 10:59:16,820 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 10:59:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 10:59:16,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619745590] [2023-08-24 10:59:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619745590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 10:59:16,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 10:59:16,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 10:59:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245788081] [2023-08-24 10:59:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 10:59:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 10:59:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 10:59:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 10:59:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 10:59:16,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 134 [2023-08-24 10:59:16,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 10:59:16,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 10:59:16,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 134 [2023-08-24 10:59:16,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 10:59:16,911 INFO L124 PetriNetUnfolderBase]: 72/169 cut-off events. [2023-08-24 10:59:16,911 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-24 10:59:16,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 169 events. 72/169 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 526 event pairs, 17 based on Foata normal form. 4/173 useless extension candidates. Maximal degree in co-relation 288. Up to 89 conditions per place. [2023-08-24 10:59:16,913 INFO L140 encePairwiseOnDemand]: 129/134 looper letters, 36 selfloop transitions, 5 changer transitions 2/43 dead transitions. [2023-08-24 10:59:16,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 221 flow [2023-08-24 10:59:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 10:59:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 10:59:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-08-24 10:59:16,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029850746268657 [2023-08-24 10:59:16,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-08-24 10:59:16,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-08-24 10:59:16,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 10:59:16,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-08-24 10:59:16,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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 10:59:16,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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 10:59:16,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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 10:59:16,919 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 79 flow. Second operand 5 states and 404 transitions. [2023-08-24 10:59:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 221 flow [2023-08-24 10:59:16,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 10:59:16,921 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 92 flow [2023-08-24 10:59:16,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-08-24 10:59:16,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2023-08-24 10:59:16,922 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 92 flow [2023-08-24 10:59:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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 10:59:16,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 10:59:16,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 10:59:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 10:59:16,923 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-24 10:59:16,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 10:59:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1877937628, now seen corresponding path program 1 times [2023-08-24 10:59:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 10:59:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927264577] [2023-08-24 10:59:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 10:59:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 10:59:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 10:59:16,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 10:59:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 10:59:17,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 10:59:17,015 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 10:59:17,016 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-24 10:59:17,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-24 10:59:17,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-24 10:59:17,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-24 10:59:17,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-24 10:59:17,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 10:59:17,020 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-24 10:59:17,026 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 10:59:17,026 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 10:59:17,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 10:59:17 BasicIcfg [2023-08-24 10:59:17,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 10:59:17,076 INFO L158 Benchmark]: Toolchain (without parser) took 4871.93ms. Allocated memory was 339.7MB in the beginning and 427.8MB in the end (delta: 88.1MB). Free memory was 315.0MB in the beginning and 231.8MB in the end (delta: 83.2MB). Peak memory consumption was 172.8MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,076 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 10:59:17,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.52ms. Allocated memory is still 339.7MB. Free memory was 315.0MB in the beginning and 295.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.21ms. Allocated memory is still 339.7MB. Free memory was 295.2MB in the beginning and 293.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,078 INFO L158 Benchmark]: Boogie Preprocessor took 35.38ms. Allocated memory is still 339.7MB. Free memory was 293.5MB in the beginning and 291.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,078 INFO L158 Benchmark]: RCFGBuilder took 421.59ms. Allocated memory is still 339.7MB. Free memory was 291.9MB in the beginning and 277.7MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,079 INFO L158 Benchmark]: TraceAbstraction took 3903.76ms. Allocated memory was 339.7MB in the beginning and 427.8MB in the end (delta: 88.1MB). Free memory was 276.8MB in the beginning and 231.8MB in the end (delta: 45.0MB). Peak memory consumption was 135.1MB. Max. memory is 16.0GB. [2023-08-24 10:59:17,081 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 339.7MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 447.52ms. Allocated memory is still 339.7MB. Free memory was 315.0MB in the beginning and 295.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.21ms. Allocated memory is still 339.7MB. Free memory was 295.2MB in the beginning and 293.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.38ms. Allocated memory is still 339.7MB. Free memory was 293.5MB in the beginning and 291.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 421.59ms. Allocated memory is still 339.7MB. Free memory was 291.9MB in the beginning and 277.7MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3903.76ms. Allocated memory was 339.7MB in the beginning and 427.8MB in the end (delta: 88.1MB). Free memory was 276.8MB in the beginning and 231.8MB in the end (delta: 45.0MB). Peak memory consumption was 135.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 77 PlacesBefore, 30 PlacesAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 814 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1727 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1106, independent: 1020, independent conditional: 0, independent unconditional: 1020, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 443, independent: 427, independent conditional: 0, independent unconditional: 427, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1106, independent: 593, independent conditional: 0, independent unconditional: 593, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 443, unknown conditional: 0, unknown unconditional: 443] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={7:0}, t2={5:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t2, 0, thread2, 0)=-1, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, pthread_create(&t3, 0, thread3, 0)=0, pthread_mutex_lock(&mutex)=0, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L709] 1 return 0; [L714] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 732]: 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 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 205 IncrementalHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 205 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=4, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 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 10:59:17,103 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...