/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-wmm/safe032_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:50:50,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:50:50,116 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 11:50:50,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:50:50,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:50:50,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:50:50,159 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:50:50,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:50:50,160 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:50:50,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:50:50,165 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:50:50,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:50:50,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:50:50,167 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:50:50,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:50:50,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:50:50,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:50:50,168 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:50:50,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:50:50,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:50:50,168 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:50:50,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:50:50,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:50:50,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:50:50,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:50:50,174 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:50:50,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:50:50,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:50:50,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:50:50,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:50:50,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:50:50,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:50:50,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:50:50,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:50:50,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:50:50,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:50:50,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:50:50,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:50:50,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:50:50,502 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:50:50,502 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:50:50,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-08-24 11:50:51,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:50:51,934 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:50:51,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-08-24 11:50:51,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e84185a1/ce1f62e0b1434569b4ce79de4326dc28/FLAG08a26dd55 [2023-08-24 11:50:51,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e84185a1/ce1f62e0b1434569b4ce79de4326dc28 [2023-08-24 11:50:51,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:50:51,983 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:50:51,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:50:51,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:50:51,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:50:51,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:50:51" (1/1) ... [2023-08-24 11:50:51,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee8625d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:51, skipping insertion in model container [2023-08-24 11:50:51,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:50:51" (1/1) ... [2023-08-24 11:50:52,022 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:50:52,164 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/safe032_tso.i[945,958] [2023-08-24 11:50:52,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:50:52,355 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:50:52,368 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/safe032_tso.i[945,958] [2023-08-24 11:50:52,385 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:50:52,387 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 11:50:52,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:50:52,447 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:50:52,448 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:50:52,454 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:50:52,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52 WrapperNode [2023-08-24 11:50:52,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:50:52,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:50:52,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:50:52,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:50:52,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,515 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-24 11:50:52,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:50:52,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:50:52,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:50:52,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:50:52,524 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,547 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:50:52,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:50:52,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:50:52,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:50:52,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (1/1) ... [2023-08-24 11:50:52,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:50:52,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:50:52,598 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 11:50:52,621 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 11:50:52,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:50:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:50:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:50:52,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:50:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:50:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:50:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:50:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:50:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:50:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 11:50:52,642 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 11:50:52,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:50:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:50:52,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:50:52,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:50:52,645 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 11:50:52,798 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:50:52,800 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:50:52,974 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:50:52,980 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:50:52,981 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:50:52,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:50:52 BoogieIcfgContainer [2023-08-24 11:50:52,983 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:50:52,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:50:52,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:50:52,988 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:50:52,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:50:51" (1/3) ... [2023-08-24 11:50:52,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:50:52, skipping insertion in model container [2023-08-24 11:50:52,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:50:52" (2/3) ... [2023-08-24 11:50:52,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e2e072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:50:52, skipping insertion in model container [2023-08-24 11:50:52,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:50:52" (3/3) ... [2023-08-24 11:50:52,991 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2023-08-24 11:50:53,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:50:53,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:50:53,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:50:53,056 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:50:53,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 11:50:53,125 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-24 11:50:53,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:53,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 11:50:53,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 11:50:53,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:53,136 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:50:53,144 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:53,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-24 11:50:53,172 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-24 11:50:53,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:53,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 11:50:53,174 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 11:50:55,076 INFO L134 LiptonReduction]: Checked pairs total: 2014 [2023-08-24 11:50:55,077 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-24 11:50:55,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:50:55,094 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;@5de8d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:50:55,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 11:50:55,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:50:55,100 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-24 11:50:55,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:50:55,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:55,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:55,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:55,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1436459342, now seen corresponding path program 1 times [2023-08-24 11:50:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:55,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831291821] [2023-08-24 11:50:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:55,551 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 11:50:55,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:55,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831291821] [2023-08-24 11:50:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831291821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:50:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323361700] [2023-08-24 11:50:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:55,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:55,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 11:50:55,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 11:50:55,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:55,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 11:50:55,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:55,775 INFO L124 PetriNetUnfolderBase]: 520/830 cut-off events. [2023-08-24 11:50:55,775 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 11:50:55,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 830 events. 520/830 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3508 event pairs, 280 based on Foata normal form. 61/891 useless extension candidates. Maximal degree in co-relation 1702. Up to 601 conditions per place. [2023-08-24 11:50:55,785 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-24 11:50:55,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-24 11:50:55,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-24 11:50:55,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-24 11:50:55,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-24 11:50:55,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-24 11:50:55,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:55,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-24 11:50:55,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 11:50:55,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:55,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:55,807 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 235 transitions. [2023-08-24 11:50:55,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-24 11:50:55,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 11:50:55,810 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-24 11:50:55,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-24 11:50:55,815 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 11:50:55,815 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-24 11:50:55,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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 11:50:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:55,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:55,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:50:55,816 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:55,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1580567079, now seen corresponding path program 1 times [2023-08-24 11:50:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572878629] [2023-08-24 11:50:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:55,961 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 11:50:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572878629] [2023-08-24 11:50:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572878629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:50:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905748825] [2023-08-24 11:50:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:55,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:55,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 11:50:55,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 11:50:55,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:55,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 11:50:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:56,052 INFO L124 PetriNetUnfolderBase]: 457/763 cut-off events. [2023-08-24 11:50:56,052 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2023-08-24 11:50:56,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 763 events. 457/763 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3274 event pairs, 98 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 2191. Up to 649 conditions per place. [2023-08-24 11:50:56,058 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 26 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-08-24 11:50:56,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 198 flow [2023-08-24 11:50:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2023-08-24 11:50:56,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2023-08-24 11:50:56,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2023-08-24 11:50:56,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2023-08-24 11:50:56,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:56,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2023-08-24 11:50:56,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 11:50:56,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,070 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 3 states and 241 transitions. [2023-08-24 11:50:56,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 198 flow [2023-08-24 11:50:56,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:50:56,076 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 121 flow [2023-08-24 11:50:56,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-08-24 11:50:56,077 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-24 11:50:56,078 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 121 flow [2023-08-24 11:50:56,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 11:50:56,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:56,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:56,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:50:56,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:56,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1580567730, now seen corresponding path program 1 times [2023-08-24 11:50:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473021057] [2023-08-24 11:50:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:56,166 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 11:50:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:56,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473021057] [2023-08-24 11:50:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473021057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:56,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:50:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071893052] [2023-08-24 11:50:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:56,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:56,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-08-24 11:50:56,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 11:50:56,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:56,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-08-24 11:50:56,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:56,246 INFO L124 PetriNetUnfolderBase]: 416/698 cut-off events. [2023-08-24 11:50:56,246 INFO L125 PetriNetUnfolderBase]: For 298/299 co-relation queries the response was YES. [2023-08-24 11:50:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1859 conditions, 698 events. 416/698 cut-off events. For 298/299 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3075 event pairs, 87 based on Foata normal form. 4/682 useless extension candidates. Maximal degree in co-relation 1846. Up to 521 conditions per place. [2023-08-24 11:50:56,250 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 31 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-24 11:50:56,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 247 flow [2023-08-24 11:50:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:56,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-24 11:50:56,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862884160756501 [2023-08-24 11:50:56,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:56,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:50:56,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,254 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 121 flow. Second operand 3 states and 248 transitions. [2023-08-24 11:50:56,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 247 flow [2023-08-24 11:50:56,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:50:56,256 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 151 flow [2023-08-24 11:50:56,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-08-24 11:50:56,257 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-24 11:50:56,257 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 151 flow [2023-08-24 11:50:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 11:50:56,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:56,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:50:56,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:56,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1727714341, now seen corresponding path program 1 times [2023-08-24 11:50:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657179895] [2023-08-24 11:50:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:56,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:56,343 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 11:50:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:56,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657179895] [2023-08-24 11:50:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657179895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:50:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269593080] [2023-08-24 11:50:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:56,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 141 [2023-08-24 11:50:56,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 11:50:56,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:56,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 141 [2023-08-24 11:50:56,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:56,414 INFO L124 PetriNetUnfolderBase]: 362/614 cut-off events. [2023-08-24 11:50:56,414 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2023-08-24 11:50:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 614 events. 362/614 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2560 event pairs, 94 based on Foata normal form. 11/624 useless extension candidates. Maximal degree in co-relation 1738. Up to 312 conditions per place. [2023-08-24 11:50:56,418 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 27 selfloop transitions, 3 changer transitions 4/40 dead transitions. [2023-08-24 11:50:56,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 263 flow [2023-08-24 11:50:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-24 11:50:56,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862884160756501 [2023-08-24 11:50:56,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:56,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-24 11:50:56,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 11:50:56,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:56,422 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 151 flow. Second operand 3 states and 248 transitions. [2023-08-24 11:50:56,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 263 flow [2023-08-24 11:50:56,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:50:56,424 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 151 flow [2023-08-24 11:50:56,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-24 11:50:56,425 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-24 11:50:56,425 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 151 flow [2023-08-24 11:50:56,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 11:50:56,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:56,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:56,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:50:56,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:56,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2019576857, now seen corresponding path program 1 times [2023-08-24 11:50:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838673892] [2023-08-24 11:50:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:56,550 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 11:50:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838673892] [2023-08-24 11:50:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838673892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:56,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:50:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536008134] [2023-08-24 11:50:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:56,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:50:56,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:50:56,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:50:56,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 11:50:56,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 11:50:56,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:56,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 11:50:56,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:56,683 INFO L124 PetriNetUnfolderBase]: 552/889 cut-off events. [2023-08-24 11:50:56,683 INFO L125 PetriNetUnfolderBase]: For 578/578 co-relation queries the response was YES. [2023-08-24 11:50:56,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 889 events. 552/889 cut-off events. For 578/578 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3801 event pairs, 113 based on Foata normal form. 8/897 useless extension candidates. Maximal degree in co-relation 2714. Up to 418 conditions per place. [2023-08-24 11:50:56,688 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 33 selfloop transitions, 11 changer transitions 8/52 dead transitions. [2023-08-24 11:50:56,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 341 flow [2023-08-24 11:50:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:50:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:50:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-08-24 11:50:56,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549645390070922 [2023-08-24 11:50:56,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-08-24 11:50:56,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-08-24 11:50:56,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:56,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-08-24 11:50:56,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 11:50:56,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 11:50:56,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 11:50:56,693 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 151 flow. Second operand 4 states and 310 transitions. [2023-08-24 11:50:56,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 341 flow [2023-08-24 11:50:56,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:50:56,696 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 194 flow [2023-08-24 11:50:56,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-24 11:50:56,699 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 11:50:56,699 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 194 flow [2023-08-24 11:50:56,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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 11:50:56,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:56,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:56,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:50:56,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:56,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:56,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1655511275, now seen corresponding path program 1 times [2023-08-24 11:50:56,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:56,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980099290] [2023-08-24 11:50:56,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:56,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:56,839 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 11:50:56,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:56,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980099290] [2023-08-24 11:50:56,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980099290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:56,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:56,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:50:56,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954157722] [2023-08-24 11:50:56,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:56,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:50:56,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:56,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:50:56,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:50:56,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 11:50:56,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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 11:50:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 11:50:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:56,989 INFO L124 PetriNetUnfolderBase]: 409/676 cut-off events. [2023-08-24 11:50:56,989 INFO L125 PetriNetUnfolderBase]: For 892/892 co-relation queries the response was YES. [2023-08-24 11:50:56,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2338 conditions, 676 events. 409/676 cut-off events. For 892/892 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2689 event pairs, 76 based on Foata normal form. 6/682 useless extension candidates. Maximal degree in co-relation 2318. Up to 229 conditions per place. [2023-08-24 11:50:56,993 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 29 selfloop transitions, 13 changer transitions 13/55 dead transitions. [2023-08-24 11:50:56,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 407 flow [2023-08-24 11:50:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:50:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:50:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 451 transitions. [2023-08-24 11:50:56,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533096926713948 [2023-08-24 11:50:56,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 451 transitions. [2023-08-24 11:50:56,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 451 transitions. [2023-08-24 11:50:56,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:56,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 451 transitions. [2023-08-24 11:50:56,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 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 11:50:56,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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 11:50:56,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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 11:50:56,999 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 194 flow. Second operand 6 states and 451 transitions. [2023-08-24 11:50:56,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 407 flow [2023-08-24 11:50:57,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 400 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 11:50:57,003 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 214 flow [2023-08-24 11:50:57,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2023-08-24 11:50:57,004 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-24 11:50:57,004 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 214 flow [2023-08-24 11:50:57,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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 11:50:57,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:57,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:50:57,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:57,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:57,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1553219459, now seen corresponding path program 2 times [2023-08-24 11:50:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930817281] [2023-08-24 11:50:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:57,166 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 11:50:57,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:57,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930817281] [2023-08-24 11:50:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930817281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:50:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129758457] [2023-08-24 11:50:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:50:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:50:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:50:57,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-24 11:50:57,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 11:50:57,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:57,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-24 11:50:57,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:57,215 INFO L124 PetriNetUnfolderBase]: 135/287 cut-off events. [2023-08-24 11:50:57,215 INFO L125 PetriNetUnfolderBase]: For 846/856 co-relation queries the response was YES. [2023-08-24 11:50:57,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 287 events. 135/287 cut-off events. For 846/856 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1220 event pairs, 29 based on Foata normal form. 17/296 useless extension candidates. Maximal degree in co-relation 1042. Up to 189 conditions per place. [2023-08-24 11:50:57,218 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 28 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-24 11:50:57,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 354 flow [2023-08-24 11:50:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:50:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:50:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-24 11:50:57,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-08-24 11:50:57,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-24 11:50:57,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-24 11:50:57,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:57,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-24 11:50:57,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 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 11:50:57,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:57,221 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 11:50:57,221 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 214 flow. Second operand 3 states and 244 transitions. [2023-08-24 11:50:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 354 flow [2023-08-24 11:50:57,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 342 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 11:50:57,224 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 231 flow [2023-08-24 11:50:57,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2023-08-24 11:50:57,225 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-24 11:50:57,225 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 231 flow [2023-08-24 11:50:57,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 11:50:57,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:57,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:57,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:50:57,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:57,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1226948303, now seen corresponding path program 1 times [2023-08-24 11:50:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:57,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464323206] [2023-08-24 11:50:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:57,306 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 11:50:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464323206] [2023-08-24 11:50:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464323206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:50:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502839208] [2023-08-24 11:50:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:50:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:50:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:50:57,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-24 11:50:57,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 231 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 11:50:57,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:57,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-24 11:50:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:57,360 INFO L124 PetriNetUnfolderBase]: 93/209 cut-off events. [2023-08-24 11:50:57,360 INFO L125 PetriNetUnfolderBase]: For 552/577 co-relation queries the response was YES. [2023-08-24 11:50:57,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 209 events. 93/209 cut-off events. For 552/577 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 804 event pairs, 15 based on Foata normal form. 38/240 useless extension candidates. Maximal degree in co-relation 876. Up to 80 conditions per place. [2023-08-24 11:50:57,362 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 31 selfloop transitions, 7 changer transitions 1/48 dead transitions. [2023-08-24 11:50:57,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 417 flow [2023-08-24 11:50:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:50:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:50:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-08-24 11:50:57,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-08-24 11:50:57,364 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-08-24 11:50:57,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-08-24 11:50:57,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:57,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-08-24 11:50:57,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 11:50:57,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 11:50:57,366 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 11:50:57,366 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 231 flow. Second operand 4 states and 324 transitions. [2023-08-24 11:50:57,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 417 flow [2023-08-24 11:50:57,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 11:50:57,369 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 261 flow [2023-08-24 11:50:57,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-24 11:50:57,370 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-08-24 11:50:57,370 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 261 flow [2023-08-24 11:50:57,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 11:50:57,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:50:57,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:57,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:50:57,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 11:50:57,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:50:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash -654123618, now seen corresponding path program 1 times [2023-08-24 11:50:57,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:50:57,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844092548] [2023-08-24 11:50:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:50:57,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:50:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:50:57,549 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 11:50:57,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:50:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844092548] [2023-08-24 11:50:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844092548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:50:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:50:57,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:50:57,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388997946] [2023-08-24 11:50:57,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:50:57,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:50:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:50:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:50:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:50:57,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-24 11:50:57,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 11:50:57,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:50:57,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-24 11:50:57,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:50:57,602 INFO L124 PetriNetUnfolderBase]: 86/188 cut-off events. [2023-08-24 11:50:57,602 INFO L125 PetriNetUnfolderBase]: For 702/742 co-relation queries the response was YES. [2023-08-24 11:50:57,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 188 events. 86/188 cut-off events. For 702/742 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 727 event pairs, 14 based on Foata normal form. 34/215 useless extension candidates. Maximal degree in co-relation 843. Up to 69 conditions per place. [2023-08-24 11:50:57,604 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-24 11:50:57,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 421 flow [2023-08-24 11:50:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:50:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:50:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-08-24 11:50:57,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-24 11:50:57,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-08-24 11:50:57,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-08-24 11:50:57,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:50:57,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-08-24 11:50:57,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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 11:50:57,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 11:50:57,608 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 11:50:57,608 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 261 flow. Second operand 5 states and 395 transitions. [2023-08-24 11:50:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 421 flow [2023-08-24 11:50:57,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 396 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-24 11:50:57,611 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-24 11:50:57,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-24 11:50:57,612 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 18 predicate places. [2023-08-24 11:50:57,612 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-24 11:50:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 11:50:57,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 11:50:57,615 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 11:50:57,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 11:50:57,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 11:50:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 11:50:57,617 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:50:57,620 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:50:57,620 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:50:57,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:50:57 BasicIcfg [2023-08-24 11:50:57,624 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:50:57,625 INFO L158 Benchmark]: Toolchain (without parser) took 5641.74ms. Allocated memory was 381.7MB in the beginning and 505.4MB in the end (delta: 123.7MB). Free memory was 336.0MB in the beginning and 444.7MB in the end (delta: -108.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. [2023-08-24 11:50:57,625 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory was 359.3MB in the beginning and 359.2MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:50:57,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.58ms. Allocated memory is still 381.7MB. Free memory was 336.0MB in the beginning and 316.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:50:57,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.29ms. Allocated memory is still 381.7MB. Free memory was 316.1MB in the beginning and 314.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:50:57,626 INFO L158 Benchmark]: Boogie Preprocessor took 35.99ms. Allocated memory is still 381.7MB. Free memory was 314.0MB in the beginning and 311.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:50:57,626 INFO L158 Benchmark]: RCFGBuilder took 430.14ms. Allocated memory is still 381.7MB. Free memory was 311.9MB in the beginning and 297.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:50:57,627 INFO L158 Benchmark]: TraceAbstraction took 4638.98ms. Allocated memory was 381.7MB in the beginning and 505.4MB in the end (delta: 123.7MB). Free memory was 297.2MB in the beginning and 444.7MB in the end (delta: -147.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:50:57,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 381.7MB. Free memory was 359.3MB in the beginning and 359.2MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 471.58ms. Allocated memory is still 381.7MB. Free memory was 336.0MB in the beginning and 316.1MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.29ms. Allocated memory is still 381.7MB. Free memory was 316.1MB in the beginning and 314.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.99ms. Allocated memory is still 381.7MB. Free memory was 314.0MB in the beginning and 311.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 430.14ms. Allocated memory is still 381.7MB. Free memory was 311.9MB in the beginning and 297.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4638.98ms. Allocated memory was 381.7MB in the beginning and 505.4MB in the end (delta: 123.7MB). Free memory was 297.2MB in the beginning and 444.7MB in the end (delta: -147.5MB). There was no memory consumed. 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: 1.9s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1147, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 587, independent conditional: 0, independent unconditional: 587, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1147, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, 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 7 procedures, 107 locations, 4 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: 4.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 333 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 12 mSDtfsCounter, 333 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=261occurred in iteration=8, InterpolantAutomatonStates: 34, 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, 1.2s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 11:50:57,649 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...