/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/pthread-wmm/safe029_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:37:11,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:37:11,383 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 05:37:11,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:37:11,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:37:11,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:37:11,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:37:11,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:37:11,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:37:11,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:37:11,427 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:37:11,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:37:11,427 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:37:11,429 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:37:11,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:37:11,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:37:11,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:37:11,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:37:11,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:37:11,430 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:37:11,430 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:37:11,431 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:37:11,431 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:37:11,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:37:11,432 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:37:11,432 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:37:11,432 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:37:11,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:11,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:37:11,433 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:37:11,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:37:11,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:37:11,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:37:11,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:37:11,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:37:11,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:37:11,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:37:11,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:37:11,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:37:11,759 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:37:11,759 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:37:11,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-24 05:37:12,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:37:13,210 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:37:13,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2023-08-24 05:37:13,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aff5943f/fa2df882c7ed4b1292845a918675aaf5/FLAG38a6f4245 [2023-08-24 05:37:13,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aff5943f/fa2df882c7ed4b1292845a918675aaf5 [2023-08-24 05:37:13,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:37:13,250 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:37:13,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:13,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:37:13,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:37:13,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fca3735 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13, skipping insertion in model container [2023-08-24 05:37:13,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,310 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:37:13,475 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-wmm/safe029_tso.i[945,958] [2023-08-24 05:37:13,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:13,658 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:37:13,670 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-wmm/safe029_tso.i[945,958] [2023-08-24 05:37:13,688 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:13,689 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:13,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:13,737 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:13,737 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:13,743 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:37:13,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13 WrapperNode [2023-08-24 05:37:13,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:13,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:13,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:37:13,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:37:13,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,804 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-08-24 05:37:13,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:13,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:37:13,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:37:13,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:37:13,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,818 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,835 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:37:13,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:37:13,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:37:13,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:37:13,842 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (1/1) ... [2023-08-24 05:37:13,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:37:13,869 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 05:37:13,889 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 05:37:13,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:37:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:37:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:37:13,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:37:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:37:13,913 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:37:13,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:37:13,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:37:13,916 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 05:37:14,027 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:37:14,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:37:14,128 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:37:14,133 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:37:14,134 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:37:14,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:14 BoogieIcfgContainer [2023-08-24 05:37:14,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:37:14,138 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:37:14,138 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:37:14,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:37:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:37:13" (1/3) ... [2023-08-24 05:37:14,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d807d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:14, skipping insertion in model container [2023-08-24 05:37:14,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:13" (2/3) ... [2023-08-24 05:37:14,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d807d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:14, skipping insertion in model container [2023-08-24 05:37:14,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:14" (3/3) ... [2023-08-24 05:37:14,146 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-08-24 05:37:14,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:37:14,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:37:14,160 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:37:14,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:37:14,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 66 transitions, 142 flow [2023-08-24 05:37:14,272 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-08-24 05:37:14,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:14,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-24 05:37:14,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 66 transitions, 142 flow [2023-08-24 05:37:14,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 54 transitions, 114 flow [2023-08-24 05:37:14,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:37:14,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 54 transitions, 114 flow [2023-08-24 05:37:14,292 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 54 transitions, 114 flow [2023-08-24 05:37:14,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 54 transitions, 114 flow [2023-08-24 05:37:14,348 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2023-08-24 05:37:14,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:14,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-24 05:37:14,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-24 05:37:15,791 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-08-24 05:37:15,791 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-08-24 05:37:15,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:37:15,808 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;@5a4389fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:37:15,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 05:37:15,812 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:37:15,812 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-24 05:37:15,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:15,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:15,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 05:37:15,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:15,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1741515607, now seen corresponding path program 1 times [2023-08-24 05:37:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:15,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206433588] [2023-08-24 05:37:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:16,266 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 05:37:16,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:16,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206433588] [2023-08-24 05:37:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206433588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:37:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335841683] [2023-08-24 05:37:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:16,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:16,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:37:16,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 05:37:16,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:16,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:37:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:16,374 INFO L124 PetriNetUnfolderBase]: 40/87 cut-off events. [2023-08-24 05:37:16,374 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:37:16,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 87 events. 40/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 267 event pairs, 14 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 170. Up to 74 conditions per place. [2023-08-24 05:37:16,376 INFO L140 encePairwiseOnDemand]: 109/114 looper letters, 14 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-24 05:37:16,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 79 flow [2023-08-24 05:37:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:16,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2023-08-24 05:37:16,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2023-08-24 05:37:16,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 191 transitions. [2023-08-24 05:37:16,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 191 transitions. [2023-08-24 05:37:16,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:16,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 191 transitions. [2023-08-24 05:37:16,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,410 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 191 transitions. [2023-08-24 05:37:16,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 79 flow [2023-08-24 05:37:16,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:37:16,414 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-08-24 05:37:16,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-24 05:37:16,420 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-24 05:37:16,420 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-08-24 05:37:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 05:37:16,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:16,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:16,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:37:16,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:16,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1847590487, now seen corresponding path program 1 times [2023-08-24 05:37:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014715758] [2023-08-24 05:37:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:16,599 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 05:37:16,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:16,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014715758] [2023-08-24 05:37:16,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014715758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:16,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:16,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:37:16,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008049379] [2023-08-24 05:37:16,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:16,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:37:16,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 05:37:16,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:16,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:37:16,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:16,654 INFO L124 PetriNetUnfolderBase]: 49/103 cut-off events. [2023-08-24 05:37:16,654 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-24 05:37:16,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 103 events. 49/103 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 290 event pairs, 20 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 243. Up to 81 conditions per place. [2023-08-24 05:37:16,657 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 15 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2023-08-24 05:37:16,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 100 flow [2023-08-24 05:37:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-08-24 05:37:16,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-08-24 05:37:16,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:16,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 05:37:16,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,668 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 3 states and 189 transitions. [2023-08-24 05:37:16,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 100 flow [2023-08-24 05:37:16,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:16,670 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 63 flow [2023-08-24 05:37:16,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-24 05:37:16,671 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-24 05:37:16,671 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 63 flow [2023-08-24 05:37:16,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 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 05:37:16,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:16,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:16,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:37:16,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:16,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash 851212811, now seen corresponding path program 1 times [2023-08-24 05:37:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:16,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153461135] [2023-08-24 05:37:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:16,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:16,785 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 05:37:16,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:16,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153461135] [2023-08-24 05:37:16,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153461135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:16,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:16,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:37:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903605501] [2023-08-24 05:37:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:16,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:16,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:37:16,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:16,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:37:16,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:16,849 INFO L124 PetriNetUnfolderBase]: 51/114 cut-off events. [2023-08-24 05:37:16,849 INFO L125 PetriNetUnfolderBase]: For 64/68 co-relation queries the response was YES. [2023-08-24 05:37:16,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 114 events. 51/114 cut-off events. For 64/68 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 421 event pairs, 20 based on Foata normal form. 8/117 useless extension candidates. Maximal degree in co-relation 295. Up to 68 conditions per place. [2023-08-24 05:37:16,851 INFO L140 encePairwiseOnDemand]: 111/114 looper letters, 16 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2023-08-24 05:37:16,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 113 flow [2023-08-24 05:37:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-08-24 05:37:16,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2023-08-24 05:37:16,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:16,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-08-24 05:37:16,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 05:37:16,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,856 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 63 flow. Second operand 3 states and 189 transitions. [2023-08-24 05:37:16,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 113 flow [2023-08-24 05:37:16,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:16,858 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 71 flow [2023-08-24 05:37:16,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-24 05:37:16,859 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-08-24 05:37:16,862 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 71 flow [2023-08-24 05:37:16,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:16,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:37:16,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:16,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 851185624, now seen corresponding path program 1 times [2023-08-24 05:37:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:16,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906909461] [2023-08-24 05:37:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:16,943 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 05:37:16,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:16,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906909461] [2023-08-24 05:37:16,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906909461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:16,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:37:16,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6372754] [2023-08-24 05:37:16,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:16,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:16,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:16,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:16,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:16,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:37:16,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:16,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:37:16,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:16,975 INFO L124 PetriNetUnfolderBase]: 20/61 cut-off events. [2023-08-24 05:37:16,976 INFO L125 PetriNetUnfolderBase]: For 42/43 co-relation queries the response was YES. [2023-08-24 05:37:16,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 61 events. 20/61 cut-off events. For 42/43 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 7 based on Foata normal form. 5/64 useless extension candidates. Maximal degree in co-relation 164. Up to 41 conditions per place. [2023-08-24 05:37:16,978 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 15 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2023-08-24 05:37:16,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 128 flow [2023-08-24 05:37:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-08-24 05:37:16,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2023-08-24 05:37:16,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-08-24 05:37:16,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-08-24 05:37:16,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:16,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-08-24 05:37:16,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:16,982 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 71 flow. Second operand 3 states and 188 transitions. [2023-08-24 05:37:16,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 128 flow [2023-08-24 05:37:16,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 120 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:16,984 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 85 flow [2023-08-24 05:37:16,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-24 05:37:16,985 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-24 05:37:16,986 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 85 flow [2023-08-24 05:37:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:16,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:16,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:16,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:37:16,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:16,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:16,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1684410084, now seen corresponding path program 1 times [2023-08-24 05:37:16,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:16,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038671708] [2023-08-24 05:37:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:16,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:17,089 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 05:37:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:17,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038671708] [2023-08-24 05:37:17,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038671708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:17,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:37:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444616660] [2023-08-24 05:37:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:17,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 114 [2023-08-24 05:37:17,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 05:37:17,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:17,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 114 [2023-08-24 05:37:17,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:17,129 INFO L124 PetriNetUnfolderBase]: 27/78 cut-off events. [2023-08-24 05:37:17,129 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-08-24 05:37:17,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 78 events. 27/78 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 10 based on Foata normal form. 5/83 useless extension candidates. Maximal degree in co-relation 255. Up to 58 conditions per place. [2023-08-24 05:37:17,130 INFO L140 encePairwiseOnDemand]: 108/114 looper letters, 14 selfloop transitions, 9 changer transitions 4/27 dead transitions. [2023-08-24 05:37:17,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 177 flow [2023-08-24 05:37:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:17,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-08-24 05:37:17,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2023-08-24 05:37:17,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-08-24 05:37:17,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-08-24 05:37:17,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:17,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-08-24 05:37:17,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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 05:37:17,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:17,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 05:37:17,133 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 85 flow. Second operand 3 states and 184 transitions. [2023-08-24 05:37:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 177 flow [2023-08-24 05:37:17,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:17,135 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 111 flow [2023-08-24 05:37:17,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-24 05:37:17,137 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-24 05:37:17,138 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 111 flow [2023-08-24 05:37:17,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 05:37:17,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:17,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:17,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:37:17,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:37:17,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:17,139 INFO L85 PathProgramCache]: Analyzing trace with hash 766815732, now seen corresponding path program 1 times [2023-08-24 05:37:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:17,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852306606] [2023-08-24 05:37:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:17,254 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 05:37:17,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:17,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852306606] [2023-08-24 05:37:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852306606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:17,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:37:17,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224865939] [2023-08-24 05:37:17,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:17,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:37:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:17,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:37:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:37:17,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 114 [2023-08-24 05:37:17,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 05:37:17,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:17,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 114 [2023-08-24 05:37:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:17,287 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2023-08-24 05:37:17,287 INFO L125 PetriNetUnfolderBase]: For 28/33 co-relation queries the response was YES. [2023-08-24 05:37:17,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 34 events. 8/34 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 2 based on Foata normal form. 11/44 useless extension candidates. Maximal degree in co-relation 114. Up to 15 conditions per place. [2023-08-24 05:37:17,288 INFO L140 encePairwiseOnDemand]: 110/114 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-24 05:37:17,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 155 flow [2023-08-24 05:37:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:37:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:37:17,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-08-24 05:37:17,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-08-24 05:37:17,290 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-08-24 05:37:17,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-08-24 05:37:17,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:17,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-08-24 05:37:17,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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 05:37:17,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:37:17,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 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 05:37:17,292 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 111 flow. Second operand 4 states and 244 transitions. [2023-08-24 05:37:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 155 flow [2023-08-24 05:37:17,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 129 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:37:17,294 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-24 05:37:17,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=114, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-24 05:37:17,296 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-24 05:37:17,297 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-24 05:37:17,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 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 05:37:17,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 05:37:17,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 05:37:17,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 05:37:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:37:17,300 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 05:37:17,307 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:37:17,307 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:37:17,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:37:17 BasicIcfg [2023-08-24 05:37:17,310 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:37:17,310 INFO L158 Benchmark]: Toolchain (without parser) took 4060.48ms. Allocated memory was 343.9MB in the beginning and 434.1MB in the end (delta: 90.2MB). Free memory was 318.5MB in the beginning and 322.5MB in the end (delta: -4.0MB). Peak memory consumption was 86.8MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,310 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 343.9MB. Free memory is still 320.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:37:17,314 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.19ms. Allocated memory is still 343.9MB. Free memory was 318.5MB in the beginning and 298.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.87ms. Allocated memory is still 343.9MB. Free memory was 298.5MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,317 INFO L158 Benchmark]: Boogie Preprocessor took 36.04ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 295.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,317 INFO L158 Benchmark]: RCFGBuilder took 294.34ms. Allocated memory is still 343.9MB. Free memory was 295.1MB in the beginning and 282.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,317 INFO L158 Benchmark]: TraceAbstraction took 3171.78ms. Allocated memory was 343.9MB in the beginning and 434.1MB in the end (delta: 90.2MB). Free memory was 281.9MB in the beginning and 322.5MB in the end (delta: -40.7MB). Peak memory consumption was 51.2MB. Max. memory is 16.0GB. [2023-08-24 05:37:17,318 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 343.9MB. Free memory is still 320.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 492.19ms. Allocated memory is still 343.9MB. Free memory was 318.5MB in the beginning and 298.5MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.87ms. Allocated memory is still 343.9MB. Free memory was 298.5MB in the beginning and 296.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.04ms. Allocated memory is still 343.9MB. Free memory was 296.5MB in the beginning and 295.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 294.34ms. Allocated memory is still 343.9MB. Free memory was 295.1MB in the beginning and 282.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3171.78ms. Allocated memory was 343.9MB in the beginning and 434.1MB in the end (delta: 90.2MB). Free memory was 281.9MB in the beginning and 322.5MB in the end (delta: -40.7MB). Peak memory consumption was 51.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 60 PlacesBefore, 19 PlacesAfterwards, 54 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 48 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, independent: 446, independent conditional: 0, independent unconditional: 446, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 306, independent: 284, independent conditional: 0, independent unconditional: 284, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 501, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 306, unknown conditional: 0, unknown unconditional: 306] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 81 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 7 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=5, InterpolantAutomatonStates: 19, 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, 0.8s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:37:17,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...