/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/rfi002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:45:47,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:45:47,111 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 11:45:47,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:45:47,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:45:47,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:45:47,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:45:47,154 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:45:47,155 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:45:47,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:45:47,159 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:45:47,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:45:47,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:45:47,161 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:45:47,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:45:47,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:45:47,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:45:47,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:45:47,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:45:47,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:45:47,162 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:45:47,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:45:47,163 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:45:47,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:45:47,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:45:47,164 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:45:47,164 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:45:47,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:45:47,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:45:47,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:45:47,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:45:47,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:45:47,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:45:47,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:45:47,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:45:47,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:45:47,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:45:47,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:45:47,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:45:47,500 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:45:47,501 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:45:47,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-24 11:45:48,719 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:45:49,018 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:45:49,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-08-24 11:45:49,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97f2598b/8c0dd9bd079247bcad399cf9ead8ba2e/FLAGffe88cfac [2023-08-24 11:45:49,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97f2598b/8c0dd9bd079247bcad399cf9ead8ba2e [2023-08-24 11:45:49,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:45:49,064 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:45:49,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:45:49,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:45:49,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:45:49,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@140cd430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49, skipping insertion in model container [2023-08-24 11:45:49,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,135 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:45:49,300 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/rfi002_tso.i[987,1000] [2023-08-24 11:45:49,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:45:49,520 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:45:49,530 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/rfi002_tso.i[987,1000] [2023-08-24 11:45:49,537 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-24 11:45:49,538 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-24 11:45:49,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:45:49,639 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:45:49,639 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:45:49,645 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:45:49,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49 WrapperNode [2023-08-24 11:45:49,646 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:45:49,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:45:49,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:45:49,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:45:49,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,703 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-08-24 11:45:49,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:45:49,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:45:49,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:45:49,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:45:49,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:45:49,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:45:49,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:45:49,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:45:49,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (1/1) ... [2023-08-24 11:45:49,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:45:49,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:45:49,785 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 11:45:49,813 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 11:45:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:45:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:45:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 11:45:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 11:45:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:45:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:45:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:45:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:45:49,829 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 11:45:49,988 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:45:49,990 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:45:50,436 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:45:50,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:45:50,641 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 11:45:50,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:45:50 BoogieIcfgContainer [2023-08-24 11:45:50,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:45:50,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:45:50,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:45:50,648 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:45:50,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:45:49" (1/3) ... [2023-08-24 11:45:50,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569e313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:45:50, skipping insertion in model container [2023-08-24 11:45:50,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:45:49" (2/3) ... [2023-08-24 11:45:50,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569e313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:45:50, skipping insertion in model container [2023-08-24 11:45:50,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:45:50" (3/3) ... [2023-08-24 11:45:50,651 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-08-24 11:45:50,665 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:45:50,665 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-24 11:45:50,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:45:50,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:45:50,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 107 transitions, 224 flow [2023-08-24 11:45:50,833 INFO L124 PetriNetUnfolderBase]: 2/105 cut-off events. [2023-08-24 11:45:50,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:50,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-24 11:45:50,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 107 transitions, 224 flow [2023-08-24 11:45:50,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 105 transitions, 216 flow [2023-08-24 11:45:50,867 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:45:50,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 105 transitions, 216 flow [2023-08-24 11:45:50,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 105 transitions, 216 flow [2023-08-24 11:45:50,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 216 flow [2023-08-24 11:45:50,923 INFO L124 PetriNetUnfolderBase]: 2/105 cut-off events. [2023-08-24 11:45:50,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 105 events. 2/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2023-08-24 11:45:50,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 1314 [2023-08-24 11:45:55,972 INFO L134 LiptonReduction]: Checked pairs total: 4349 [2023-08-24 11:45:55,972 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-24 11:45:55,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:45:55,990 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;@77aeadf5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:45:55,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 11:45:55,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:45:55,993 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-24 11:45:55,993 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:45:55,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:55,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 11:45:55,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:45:55,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 599221769, now seen corresponding path program 1 times [2023-08-24 11:45:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:56,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912772417] [2023-08-24 11:45:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:56,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:56,372 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 11:45:56,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:56,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912772417] [2023-08-24 11:45:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912772417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:56,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:56,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:45:56,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815797804] [2023-08-24 11:45:56,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:45:56,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:45:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:45:56,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-24 11:45:56,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 11:45:56,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:56,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-24 11:45:56,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:56,666 INFO L124 PetriNetUnfolderBase]: 373/626 cut-off events. [2023-08-24 11:45:56,666 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 11:45:56,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2526 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-08-24 11:45:56,672 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-24 11:45:56,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-08-24 11:45:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:56,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-24 11:45:56,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876847290640394 [2023-08-24 11:45:56,696 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-24 11:45:56,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-24 11:45:56,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:56,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-24 11:45:56,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 11:45:56,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:56,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:56,710 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 297 transitions. [2023-08-24 11:45:56,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-08-24 11:45:56,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:56,714 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-08-24 11:45:56,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-24 11:45:56,719 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-24 11:45:56,719 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-08-24 11:45:56,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 11:45:56,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:56,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 11:45:56,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:45:56,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:45:56,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1396006180, now seen corresponding path program 1 times [2023-08-24 11:45:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:56,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189577756] [2023-08-24 11:45:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:56,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:56,935 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 11:45:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189577756] [2023-08-24 11:45:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189577756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:56,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:56,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 11:45:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368155713] [2023-08-24 11:45:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:56,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 11:45:56,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:56,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 11:45:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 11:45:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 203 [2023-08-24 11:45:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 11:45:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 203 [2023-08-24 11:45:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:57,101 INFO L124 PetriNetUnfolderBase]: 324/547 cut-off events. [2023-08-24 11:45:57,102 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-24 11:45:57,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2057 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-08-24 11:45:57,107 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-08-24 11:45:57,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-08-24 11:45:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-24 11:45:57,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-08-24 11:45:57,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-24 11:45:57,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-24 11:45:57,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:57,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-24 11:45:57,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 11:45:57,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:57,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:57,118 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 296 transitions. [2023-08-24 11:45:57,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-08-24 11:45:57,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:57,120 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-08-24 11:45:57,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-24 11:45:57,121 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-24 11:45:57,122 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-08-24 11:45:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 11:45:57,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:57,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:57,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:45:57,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:45:57,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 326571041, now seen corresponding path program 1 times [2023-08-24 11:45:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442634979] [2023-08-24 11:45:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:57,712 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 11:45:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442634979] [2023-08-24 11:45:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442634979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:57,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:45:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265390524] [2023-08-24 11:45:57,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:45:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:57,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:45:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:45:57,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-08-24 11:45:57,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 11:45:57,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:57,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-08-24 11:45:57,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:57,845 INFO L124 PetriNetUnfolderBase]: 214/374 cut-off events. [2023-08-24 11:45:57,845 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-24 11:45:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 374 events. 214/374 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1355 event pairs, 94 based on Foata normal form. 21/395 useless extension candidates. Maximal degree in co-relation 777. Up to 225 conditions per place. [2023-08-24 11:45:57,847 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-24 11:45:57,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 124 flow [2023-08-24 11:45:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-24 11:45:57,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2023-08-24 11:45:57,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-24 11:45:57,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-24 11:45:57,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:57,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-24 11:45:57,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 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 11:45:57,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:57,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:57,852 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 266 transitions. [2023-08-24 11:45:57,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 124 flow [2023-08-24 11:45:57,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:57,853 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-08-24 11:45:57,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-24 11:45:57,854 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-24 11:45:57,857 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-08-24 11:45:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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 11:45:57,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:57,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:57,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:45:57,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:45:57,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -292945166, now seen corresponding path program 1 times [2023-08-24 11:45:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:57,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142736650] [2023-08-24 11:45:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:58,430 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 11:45:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142736650] [2023-08-24 11:45:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142736650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:45:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137621212] [2023-08-24 11:45:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:58,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:45:58,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:45:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:45:58,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-08-24 11:45:58,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 11:45:58,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:58,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-08-24 11:45:58,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:45:58,553 INFO L124 PetriNetUnfolderBase]: 199/350 cut-off events. [2023-08-24 11:45:58,553 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 11:45:58,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 350 events. 199/350 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1136 event pairs, 83 based on Foata normal form. 9/359 useless extension candidates. Maximal degree in co-relation 766. Up to 210 conditions per place. [2023-08-24 11:45:58,555 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-24 11:45:58,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 115 flow [2023-08-24 11:45:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 11:45:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 11:45:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-24 11:45:58,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318555008210181 [2023-08-24 11:45:58,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-24 11:45:58,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-24 11:45:58,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:45:58,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-24 11:45:58,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 11:45:58,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:58,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 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 11:45:58,560 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 263 transitions. [2023-08-24 11:45:58,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 115 flow [2023-08-24 11:45:58,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:45:58,561 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-08-24 11:45:58,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-24 11:45:58,562 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-24 11:45:58,562 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-08-24 11:45:58,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 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 11:45:58,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:45:58,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:45:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:45:58,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:45:58,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:45:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1395240645, now seen corresponding path program 1 times [2023-08-24 11:45:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:45:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672758080] [2023-08-24 11:45:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:45:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:45:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:45:59,708 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 11:45:59,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:45:59,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672758080] [2023-08-24 11:45:59,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672758080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:45:59,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:45:59,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:45:59,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639261531] [2023-08-24 11:45:59,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:45:59,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:45:59,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:45:59,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:45:59,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:45:59,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-08-24 11:45:59,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 9 states, 9 states have (on average 79.44444444444444) internal successors, (715), 9 states have internal predecessors, (715), 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 11:45:59,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:45:59,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-08-24 11:45:59,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:00,050 INFO L124 PetriNetUnfolderBase]: 252/441 cut-off events. [2023-08-24 11:46:00,050 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 11:46:00,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 441 events. 252/441 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1637 event pairs, 19 based on Foata normal form. 3/444 useless extension candidates. Maximal degree in co-relation 1006. Up to 294 conditions per place. [2023-08-24 11:46:00,053 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 39 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2023-08-24 11:46:00,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 56 transitions, 254 flow [2023-08-24 11:46:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:46:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:46:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 682 transitions. [2023-08-24 11:46:00,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41995073891625617 [2023-08-24 11:46:00,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 682 transitions. [2023-08-24 11:46:00,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 682 transitions. [2023-08-24 11:46:00,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:00,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 682 transitions. [2023-08-24 11:46:00,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 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 11:46:00,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:00,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:00,061 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 8 states and 682 transitions. [2023-08-24 11:46:00,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 56 transitions, 254 flow [2023-08-24 11:46:00,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:46:00,063 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 155 flow [2023-08-24 11:46:00,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-08-24 11:46:00,064 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2023-08-24 11:46:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 155 flow [2023-08-24 11:46:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.44444444444444) internal successors, (715), 9 states have internal predecessors, (715), 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 11:46:00,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:00,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:00,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:46:00,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:00,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1994208185, now seen corresponding path program 2 times [2023-08-24 11:46:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704892192] [2023-08-24 11:46:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:00,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:00,988 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 11:46:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704892192] [2023-08-24 11:46:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704892192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:00,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:00,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110104591] [2023-08-24 11:46:00,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:00,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:00,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-08-24 11:46:00,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 155 flow. Second operand has 9 states, 9 states have (on average 79.44444444444444) internal successors, (715), 9 states have internal predecessors, (715), 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 11:46:00,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:00,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-08-24 11:46:00,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:01,324 INFO L124 PetriNetUnfolderBase]: 268/478 cut-off events. [2023-08-24 11:46:01,324 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2023-08-24 11:46:01,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 478 events. 268/478 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1856 event pairs, 28 based on Foata normal form. 3/481 useless extension candidates. Maximal degree in co-relation 1451. Up to 287 conditions per place. [2023-08-24 11:46:01,327 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 36 selfloop transitions, 29 changer transitions 0/65 dead transitions. [2023-08-24 11:46:01,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 407 flow [2023-08-24 11:46:01,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 11:46:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 11:46:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 758 transitions. [2023-08-24 11:46:01,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41488779419813904 [2023-08-24 11:46:01,330 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 758 transitions. [2023-08-24 11:46:01,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 758 transitions. [2023-08-24 11:46:01,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:01,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 758 transitions. [2023-08-24 11:46:01,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.22222222222223) internal successors, (758), 9 states have internal predecessors, (758), 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 11:46:01,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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 11:46:01,336 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 203.0) internal successors, (2030), 10 states have internal predecessors, (2030), 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 11:46:01,336 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 155 flow. Second operand 9 states and 758 transitions. [2023-08-24 11:46:01,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 407 flow [2023-08-24 11:46:01,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 407 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:46:01,340 INFO L231 Difference]: Finished difference. Result has 46 places, 49 transitions, 324 flow [2023-08-24 11:46:01,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=324, PETRI_PLACES=46, PETRI_TRANSITIONS=49} [2023-08-24 11:46:01,340 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-08-24 11:46:01,340 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 49 transitions, 324 flow [2023-08-24 11:46:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.44444444444444) internal successors, (715), 9 states have internal predecessors, (715), 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 11:46:01,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:01,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:01,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:46:01,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:01,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1846569505, now seen corresponding path program 3 times [2023-08-24 11:46:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674295063] [2023-08-24 11:46:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:01,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:02,353 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 11:46:02,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674295063] [2023-08-24 11:46:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674295063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:02,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:46:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125735283] [2023-08-24 11:46:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:02,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:46:02,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:46:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:46:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 203 [2023-08-24 11:46:02,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 76.625) internal successors, (613), 8 states have internal predecessors, (613), 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 11:46:02,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 203 [2023-08-24 11:46:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:02,908 INFO L124 PetriNetUnfolderBase]: 361/670 cut-off events. [2023-08-24 11:46:02,908 INFO L125 PetriNetUnfolderBase]: For 941/941 co-relation queries the response was YES. [2023-08-24 11:46:02,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 670 events. 361/670 cut-off events. For 941/941 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3098 event pairs, 30 based on Foata normal form. 4/674 useless extension candidates. Maximal degree in co-relation 2434. Up to 302 conditions per place. [2023-08-24 11:46:02,913 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 87 selfloop transitions, 40 changer transitions 0/127 dead transitions. [2023-08-24 11:46:02,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 127 transitions, 1006 flow [2023-08-24 11:46:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 11:46:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 11:46:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 909 transitions. [2023-08-24 11:46:02,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070756829377519 [2023-08-24 11:46:02,917 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 909 transitions. [2023-08-24 11:46:02,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 909 transitions. [2023-08-24 11:46:02,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:02,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 909 transitions. [2023-08-24 11:46:02,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 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 11:46:02,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:02,923 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:02,923 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 324 flow. Second operand 11 states and 909 transitions. [2023-08-24 11:46:02,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 127 transitions, 1006 flow [2023-08-24 11:46:02,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 127 transitions, 946 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-24 11:46:02,933 INFO L231 Difference]: Finished difference. Result has 63 places, 83 transitions, 696 flow [2023-08-24 11:46:02,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=696, PETRI_PLACES=63, PETRI_TRANSITIONS=83} [2023-08-24 11:46:02,934 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2023-08-24 11:46:02,934 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 83 transitions, 696 flow [2023-08-24 11:46:02,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.625) internal successors, (613), 8 states have internal predecessors, (613), 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 11:46:02,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:02,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:02,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 11:46:02,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:02,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1580708053, now seen corresponding path program 4 times [2023-08-24 11:46:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:02,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741496833] [2023-08-24 11:46:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:02,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:03,805 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 11:46:03,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:03,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741496833] [2023-08-24 11:46:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741496833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:03,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604575856] [2023-08-24 11:46:03,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:03,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:03,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:03,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:03,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 203 [2023-08-24 11:46:03,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 83 transitions, 696 flow. Second operand has 9 states, 9 states have (on average 76.44444444444444) internal successors, (688), 9 states have internal predecessors, (688), 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 11:46:03,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:03,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 203 [2023-08-24 11:46:03,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:04,243 INFO L124 PetriNetUnfolderBase]: 361/674 cut-off events. [2023-08-24 11:46:04,244 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2023-08-24 11:46:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 674 events. 361/674 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3124 event pairs, 56 based on Foata normal form. 5/679 useless extension candidates. Maximal degree in co-relation 3030. Up to 362 conditions per place. [2023-08-24 11:46:04,250 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 56 selfloop transitions, 51 changer transitions 0/107 dead transitions. [2023-08-24 11:46:04,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 1034 flow [2023-08-24 11:46:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:46:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:46:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2023-08-24 11:46:04,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032371569317382 [2023-08-24 11:46:04,252 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2023-08-24 11:46:04,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2023-08-24 11:46:04,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:04,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2023-08-24 11:46:04,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 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 11:46:04,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:04,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:04,256 INFO L175 Difference]: Start difference. First operand has 63 places, 83 transitions, 696 flow. Second operand 7 states and 573 transitions. [2023-08-24 11:46:04,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 1034 flow [2023-08-24 11:46:04,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 1022 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-24 11:46:04,266 INFO L231 Difference]: Finished difference. Result has 71 places, 89 transitions, 914 flow [2023-08-24 11:46:04,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=914, PETRI_PLACES=71, PETRI_TRANSITIONS=89} [2023-08-24 11:46:04,268 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2023-08-24 11:46:04,268 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 89 transitions, 914 flow [2023-08-24 11:46:04,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 76.44444444444444) internal successors, (688), 9 states have internal predecessors, (688), 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 11:46:04,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:04,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:04,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 11:46:04,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:04,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1260143024, now seen corresponding path program 1 times [2023-08-24 11:46:04,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:04,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613633799] [2023-08-24 11:46:04,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:05,449 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 11:46:05,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:05,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613633799] [2023-08-24 11:46:05,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613633799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:05,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318898458] [2023-08-24 11:46:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:05,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:05,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:05,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:05,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 203 [2023-08-24 11:46:05,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 89 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 84.55555555555556) internal successors, (761), 9 states have internal predecessors, (761), 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 11:46:05,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:05,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 203 [2023-08-24 11:46:05,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:05,902 INFO L124 PetriNetUnfolderBase]: 443/830 cut-off events. [2023-08-24 11:46:05,902 INFO L125 PetriNetUnfolderBase]: For 2981/2981 co-relation queries the response was YES. [2023-08-24 11:46:05,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4218 conditions, 830 events. 443/830 cut-off events. For 2981/2981 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4022 event pairs, 59 based on Foata normal form. 4/834 useless extension candidates. Maximal degree in co-relation 4185. Up to 350 conditions per place. [2023-08-24 11:46:05,910 INFO L140 encePairwiseOnDemand]: 196/203 looper letters, 103 selfloop transitions, 27 changer transitions 0/130 dead transitions. [2023-08-24 11:46:05,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 130 transitions, 1505 flow [2023-08-24 11:46:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:46:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:46:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 631 transitions. [2023-08-24 11:46:05,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405348346235046 [2023-08-24 11:46:05,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 631 transitions. [2023-08-24 11:46:05,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 631 transitions. [2023-08-24 11:46:05,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:05,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 631 transitions. [2023-08-24 11:46:05,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.14285714285714) internal successors, (631), 7 states have internal predecessors, (631), 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 11:46:05,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:05,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:05,917 INFO L175 Difference]: Start difference. First operand has 71 places, 89 transitions, 914 flow. Second operand 7 states and 631 transitions. [2023-08-24 11:46:05,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 130 transitions, 1505 flow [2023-08-24 11:46:05,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 130 transitions, 1424 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-24 11:46:05,935 INFO L231 Difference]: Finished difference. Result has 75 places, 101 transitions, 1062 flow [2023-08-24 11:46:05,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1062, PETRI_PLACES=75, PETRI_TRANSITIONS=101} [2023-08-24 11:46:05,936 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2023-08-24 11:46:05,936 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 101 transitions, 1062 flow [2023-08-24 11:46:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.55555555555556) internal successors, (761), 9 states have internal predecessors, (761), 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 11:46:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:05,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 11:46:05,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:05,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1691865686, now seen corresponding path program 1 times [2023-08-24 11:46:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:05,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470013022] [2023-08-24 11:46:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:06,510 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 11:46:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470013022] [2023-08-24 11:46:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470013022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:06,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:06,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:46:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147491132] [2023-08-24 11:46:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:46:06,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:06,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:46:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:46:06,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 203 [2023-08-24 11:46:06,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 101 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:46:06,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:06,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 203 [2023-08-24 11:46:06,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:06,875 INFO L124 PetriNetUnfolderBase]: 458/859 cut-off events. [2023-08-24 11:46:06,876 INFO L125 PetriNetUnfolderBase]: For 3933/3933 co-relation queries the response was YES. [2023-08-24 11:46:06,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4480 conditions, 859 events. 458/859 cut-off events. For 3933/3933 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4236 event pairs, 82 based on Foata normal form. 6/865 useless extension candidates. Maximal degree in co-relation 4445. Up to 730 conditions per place. [2023-08-24 11:46:06,884 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 84 selfloop transitions, 39 changer transitions 0/123 dead transitions. [2023-08-24 11:46:06,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 123 transitions, 1484 flow [2023-08-24 11:46:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:46:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:46:06,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 529 transitions. [2023-08-24 11:46:06,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343185550082102 [2023-08-24 11:46:06,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 529 transitions. [2023-08-24 11:46:06,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 529 transitions. [2023-08-24 11:46:06,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:06,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 529 transitions. [2023-08-24 11:46:06,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 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 11:46:06,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:06,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:06,890 INFO L175 Difference]: Start difference. First operand has 75 places, 101 transitions, 1062 flow. Second operand 6 states and 529 transitions. [2023-08-24 11:46:06,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 123 transitions, 1484 flow [2023-08-24 11:46:06,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 123 transitions, 1452 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-24 11:46:06,907 INFO L231 Difference]: Finished difference. Result has 80 places, 114 transitions, 1334 flow [2023-08-24 11:46:06,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1334, PETRI_PLACES=80, PETRI_TRANSITIONS=114} [2023-08-24 11:46:06,909 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 52 predicate places. [2023-08-24 11:46:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 114 transitions, 1334 flow [2023-08-24 11:46:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.33333333333333) internal successors, (500), 6 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:46:06,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:06,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 11:46:06,910 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:06,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1689217976, now seen corresponding path program 2 times [2023-08-24 11:46:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859811652] [2023-08-24 11:46:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:07,572 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 11:46:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:07,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859811652] [2023-08-24 11:46:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859811652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:07,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:07,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906893512] [2023-08-24 11:46:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:07,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:07,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:07,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:07,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 203 [2023-08-24 11:46:07,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 114 transitions, 1334 flow. Second operand has 9 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 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 11:46:07,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:07,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 203 [2023-08-24 11:46:07,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:08,054 INFO L124 PetriNetUnfolderBase]: 505/954 cut-off events. [2023-08-24 11:46:08,055 INFO L125 PetriNetUnfolderBase]: For 5358/5358 co-relation queries the response was YES. [2023-08-24 11:46:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 954 events. 505/954 cut-off events. For 5358/5358 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4920 event pairs, 78 based on Foata normal form. 9/963 useless extension candidates. Maximal degree in co-relation 5131. Up to 697 conditions per place. [2023-08-24 11:46:08,065 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 132 selfloop transitions, 43 changer transitions 4/179 dead transitions. [2023-08-24 11:46:08,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 179 transitions, 2208 flow [2023-08-24 11:46:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 11:46:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 11:46:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 855 transitions. [2023-08-24 11:46:08,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38289296909986564 [2023-08-24 11:46:08,069 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 855 transitions. [2023-08-24 11:46:08,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 855 transitions. [2023-08-24 11:46:08,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:08,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 855 transitions. [2023-08-24 11:46:08,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.72727272727273) internal successors, (855), 11 states have internal predecessors, (855), 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 11:46:08,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:08,076 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:08,076 INFO L175 Difference]: Start difference. First operand has 80 places, 114 transitions, 1334 flow. Second operand 11 states and 855 transitions. [2023-08-24 11:46:08,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 179 transitions, 2208 flow [2023-08-24 11:46:08,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 179 transitions, 2118 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-24 11:46:08,098 INFO L231 Difference]: Finished difference. Result has 92 places, 135 transitions, 1619 flow [2023-08-24 11:46:08,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1619, PETRI_PLACES=92, PETRI_TRANSITIONS=135} [2023-08-24 11:46:08,099 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 64 predicate places. [2023-08-24 11:46:08,099 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 135 transitions, 1619 flow [2023-08-24 11:46:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.55555555555556) internal successors, (653), 9 states have internal predecessors, (653), 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 11:46:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 11:46:08,100 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:08,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1500497350, now seen corresponding path program 3 times [2023-08-24 11:46:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738550358] [2023-08-24 11:46:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:08,952 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 11:46:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738550358] [2023-08-24 11:46:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738550358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:08,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:08,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573156538] [2023-08-24 11:46:08,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:08,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:08,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:08,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 203 [2023-08-24 11:46:08,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 135 transitions, 1619 flow. Second operand has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 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 11:46:08,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:08,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 203 [2023-08-24 11:46:08,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:09,856 INFO L124 PetriNetUnfolderBase]: 545/1028 cut-off events. [2023-08-24 11:46:09,856 INFO L125 PetriNetUnfolderBase]: For 5817/5817 co-relation queries the response was YES. [2023-08-24 11:46:09,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 1028 events. 545/1028 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5375 event pairs, 88 based on Foata normal form. 9/1037 useless extension candidates. Maximal degree in co-relation 5727. Up to 752 conditions per place. [2023-08-24 11:46:09,868 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 121 selfloop transitions, 72 changer transitions 7/200 dead transitions. [2023-08-24 11:46:09,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 200 transitions, 2584 flow [2023-08-24 11:46:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 11:46:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 11:46:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 840 transitions. [2023-08-24 11:46:09,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761755485893417 [2023-08-24 11:46:09,872 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 840 transitions. [2023-08-24 11:46:09,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 840 transitions. [2023-08-24 11:46:09,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:09,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 840 transitions. [2023-08-24 11:46:09,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.36363636363636) internal successors, (840), 11 states have internal predecessors, (840), 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 11:46:09,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:09,878 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:09,878 INFO L175 Difference]: Start difference. First operand has 92 places, 135 transitions, 1619 flow. Second operand 11 states and 840 transitions. [2023-08-24 11:46:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 200 transitions, 2584 flow [2023-08-24 11:46:09,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 200 transitions, 2534 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-24 11:46:09,905 INFO L231 Difference]: Finished difference. Result has 104 places, 168 transitions, 2186 flow [2023-08-24 11:46:09,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2186, PETRI_PLACES=104, PETRI_TRANSITIONS=168} [2023-08-24 11:46:09,906 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-08-24 11:46:09,906 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 168 transitions, 2186 flow [2023-08-24 11:46:09,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.55555555555556) internal successors, (635), 9 states have internal predecessors, (635), 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 11:46:09,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:09,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 11:46:09,907 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:09,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1571331105, now seen corresponding path program 1 times [2023-08-24 11:46:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462209323] [2023-08-24 11:46:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:10,318 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 11:46:10,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:10,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462209323] [2023-08-24 11:46:10,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462209323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:10,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:46:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212727959] [2023-08-24 11:46:10,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:46:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:46:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:46:10,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-08-24 11:46:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 168 transitions, 2186 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 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 11:46:10,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:10,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-08-24 11:46:10,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:10,806 INFO L124 PetriNetUnfolderBase]: 562/1092 cut-off events. [2023-08-24 11:46:10,806 INFO L125 PetriNetUnfolderBase]: For 8274/8274 co-relation queries the response was YES. [2023-08-24 11:46:10,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6569 conditions, 1092 events. 562/1092 cut-off events. For 8274/8274 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6110 event pairs, 27 based on Foata normal form. 41/1133 useless extension candidates. Maximal degree in co-relation 6522. Up to 359 conditions per place. [2023-08-24 11:46:10,816 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 102 selfloop transitions, 63 changer transitions 132/297 dead transitions. [2023-08-24 11:46:10,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 297 transitions, 4144 flow [2023-08-24 11:46:10,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 11:46:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 11:46:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 973 transitions. [2023-08-24 11:46:10,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43573667711598746 [2023-08-24 11:46:10,819 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 973 transitions. [2023-08-24 11:46:10,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 973 transitions. [2023-08-24 11:46:10,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:10,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 973 transitions. [2023-08-24 11:46:10,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.45454545454545) internal successors, (973), 11 states have internal predecessors, (973), 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 11:46:10,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:10,825 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:10,825 INFO L175 Difference]: Start difference. First operand has 104 places, 168 transitions, 2186 flow. Second operand 11 states and 973 transitions. [2023-08-24 11:46:10,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 297 transitions, 4144 flow [2023-08-24 11:46:10,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 297 transitions, 4026 flow, removed 52 selfloop flow, removed 2 redundant places. [2023-08-24 11:46:10,861 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1841 flow [2023-08-24 11:46:10,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1841, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2023-08-24 11:46:10,862 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 91 predicate places. [2023-08-24 11:46:10,862 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1841 flow [2023-08-24 11:46:10,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 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 11:46:10,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:10,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 11:46:10,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:10,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash 2137305651, now seen corresponding path program 2 times [2023-08-24 11:46:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:10,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713538909] [2023-08-24 11:46:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:11,403 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 11:46:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:11,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713538909] [2023-08-24 11:46:11,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713538909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:11,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:11,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:46:11,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166196587] [2023-08-24 11:46:11,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:11,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 11:46:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 11:46:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 11:46:11,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-08-24 11:46:11,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1841 flow. Second operand has 7 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 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 11:46:11,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:11,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-08-24 11:46:11,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:11,735 INFO L124 PetriNetUnfolderBase]: 264/511 cut-off events. [2023-08-24 11:46:11,735 INFO L125 PetriNetUnfolderBase]: For 4943/4943 co-relation queries the response was YES. [2023-08-24 11:46:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 511 events. 264/511 cut-off events. For 4943/4943 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2150 event pairs, 34 based on Foata normal form. 8/519 useless extension candidates. Maximal degree in co-relation 3560. Up to 328 conditions per place. [2023-08-24 11:46:11,741 INFO L140 encePairwiseOnDemand]: 195/203 looper letters, 107 selfloop transitions, 33 changer transitions 9/149 dead transitions. [2023-08-24 11:46:11,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 149 transitions, 2283 flow [2023-08-24 11:46:11,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:46:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:46:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-24 11:46:11,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152005629838142 [2023-08-24 11:46:11,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-24 11:46:11,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-24 11:46:11,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:11,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-24 11:46:11,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 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 11:46:11,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:11,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 203.0) internal successors, (1624), 8 states have internal predecessors, (1624), 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 11:46:11,747 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1841 flow. Second operand 7 states and 590 transitions. [2023-08-24 11:46:11,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 149 transitions, 2283 flow [2023-08-24 11:46:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 2121 flow, removed 29 selfloop flow, removed 12 redundant places. [2023-08-24 11:46:11,769 INFO L231 Difference]: Finished difference. Result has 101 places, 128 transitions, 1756 flow [2023-08-24 11:46:11,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1756, PETRI_PLACES=101, PETRI_TRANSITIONS=128} [2023-08-24 11:46:11,770 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 73 predicate places. [2023-08-24 11:46:11,770 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 128 transitions, 1756 flow [2023-08-24 11:46:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.14285714285714) internal successors, (561), 7 states have internal predecessors, (561), 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 11:46:11,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:11,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 11:46:11,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:11,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:11,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1590019840, now seen corresponding path program 4 times [2023-08-24 11:46:11,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:11,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710714337] [2023-08-24 11:46:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:12,234 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 11:46:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710714337] [2023-08-24 11:46:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710714337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:12,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:12,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:46:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383796202] [2023-08-24 11:46:12,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:12,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 11:46:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:12,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 11:46:12,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 11:46:12,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-08-24 11:46:12,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 128 transitions, 1756 flow. Second operand has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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 11:46:12,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:12,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-08-24 11:46:12,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:12,583 INFO L124 PetriNetUnfolderBase]: 275/544 cut-off events. [2023-08-24 11:46:12,583 INFO L125 PetriNetUnfolderBase]: For 4520/4520 co-relation queries the response was YES. [2023-08-24 11:46:12,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3711 conditions, 544 events. 275/544 cut-off events. For 4520/4520 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2398 event pairs, 37 based on Foata normal form. 17/561 useless extension candidates. Maximal degree in co-relation 3673. Up to 249 conditions per place. [2023-08-24 11:46:12,589 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 100 selfloop transitions, 60 changer transitions 12/172 dead transitions. [2023-08-24 11:46:12,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 2556 flow [2023-08-24 11:46:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:46:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:46:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 684 transitions. [2023-08-24 11:46:12,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4211822660098522 [2023-08-24 11:46:12,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 684 transitions. [2023-08-24 11:46:12,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 684 transitions. [2023-08-24 11:46:12,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:12,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 684 transitions. [2023-08-24 11:46:12,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.5) internal successors, (684), 8 states have internal predecessors, (684), 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 11:46:12,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:12,596 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:12,596 INFO L175 Difference]: Start difference. First operand has 101 places, 128 transitions, 1756 flow. Second operand 8 states and 684 transitions. [2023-08-24 11:46:12,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 2556 flow [2023-08-24 11:46:12,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 172 transitions, 2471 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-24 11:46:12,617 INFO L231 Difference]: Finished difference. Result has 106 places, 139 transitions, 2100 flow [2023-08-24 11:46:12,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2100, PETRI_PLACES=106, PETRI_TRANSITIONS=139} [2023-08-24 11:46:12,618 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 78 predicate places. [2023-08-24 11:46:12,618 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 139 transitions, 2100 flow [2023-08-24 11:46:12,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 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 11:46:12,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 11:46:12,619 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:12,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1943980579, now seen corresponding path program 3 times [2023-08-24 11:46:12,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:12,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844079156] [2023-08-24 11:46:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:12,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:13,348 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 11:46:13,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:13,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844079156] [2023-08-24 11:46:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844079156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:13,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:13,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:46:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447183277] [2023-08-24 11:46:13,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:13,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:46:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:46:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:46:13,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 203 [2023-08-24 11:46:13,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 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 11:46:13,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:13,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 203 [2023-08-24 11:46:13,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:13,576 INFO L124 PetriNetUnfolderBase]: 238/472 cut-off events. [2023-08-24 11:46:13,576 INFO L125 PetriNetUnfolderBase]: For 4439/4439 co-relation queries the response was YES. [2023-08-24 11:46:13,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 472 events. 238/472 cut-off events. For 4439/4439 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2041 event pairs, 32 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 3424. Up to 402 conditions per place. [2023-08-24 11:46:13,585 INFO L140 encePairwiseOnDemand]: 196/203 looper letters, 127 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2023-08-24 11:46:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 2504 flow [2023-08-24 11:46:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:46:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:46:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2023-08-24 11:46:13,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2023-08-24 11:46:13,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2023-08-24 11:46:13,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2023-08-24 11:46:13,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:13,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2023-08-24 11:46:13,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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 11:46:13,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:13,598 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:13,598 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 2100 flow. Second operand 6 states and 504 transitions. [2023-08-24 11:46:13,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 2504 flow [2023-08-24 11:46:13,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 152 transitions, 2346 flow, removed 20 selfloop flow, removed 8 redundant places. [2023-08-24 11:46:13,624 INFO L231 Difference]: Finished difference. Result has 104 places, 141 transitions, 2042 flow [2023-08-24 11:46:13,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2042, PETRI_PLACES=104, PETRI_TRANSITIONS=141} [2023-08-24 11:46:13,625 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2023-08-24 11:46:13,625 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 141 transitions, 2042 flow [2023-08-24 11:46:13,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 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 11:46:13,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:13,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:13,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 11:46:13,626 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:13,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:13,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1008813514, now seen corresponding path program 1 times [2023-08-24 11:46:13,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:13,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241108108] [2023-08-24 11:46:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:14,192 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 11:46:14,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:14,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241108108] [2023-08-24 11:46:14,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241108108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:14,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 11:46:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562065560] [2023-08-24 11:46:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 11:46:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 11:46:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 11:46:14,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 203 [2023-08-24 11:46:14,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 141 transitions, 2042 flow. Second operand has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 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 11:46:14,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:14,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 203 [2023-08-24 11:46:14,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:14,399 INFO L124 PetriNetUnfolderBase]: 249/502 cut-off events. [2023-08-24 11:46:14,399 INFO L125 PetriNetUnfolderBase]: For 4347/4347 co-relation queries the response was YES. [2023-08-24 11:46:14,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3568 conditions, 502 events. 249/502 cut-off events. For 4347/4347 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2213 event pairs, 66 based on Foata normal form. 8/510 useless extension candidates. Maximal degree in co-relation 3531. Up to 347 conditions per place. [2023-08-24 11:46:14,404 INFO L140 encePairwiseOnDemand]: 196/203 looper letters, 109 selfloop transitions, 49 changer transitions 10/168 dead transitions. [2023-08-24 11:46:14,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 168 transitions, 2661 flow [2023-08-24 11:46:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:46:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:46:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-08-24 11:46:14,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44417077175697867 [2023-08-24 11:46:14,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-08-24 11:46:14,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-08-24 11:46:14,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:14,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-08-24 11:46:14,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 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 11:46:14,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:14,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 203.0) internal successors, (1421), 7 states have internal predecessors, (1421), 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 11:46:14,410 INFO L175 Difference]: Start difference. First operand has 104 places, 141 transitions, 2042 flow. Second operand 6 states and 541 transitions. [2023-08-24 11:46:14,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 168 transitions, 2661 flow [2023-08-24 11:46:14,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 168 transitions, 2634 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:46:14,433 INFO L231 Difference]: Finished difference. Result has 109 places, 147 transitions, 2240 flow [2023-08-24 11:46:14,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2240, PETRI_PLACES=109, PETRI_TRANSITIONS=147} [2023-08-24 11:46:14,434 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 81 predicate places. [2023-08-24 11:46:14,434 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 147 transitions, 2240 flow [2023-08-24 11:46:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 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 11:46:14,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:14,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:14,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 11:46:14,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:14,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:14,435 INFO L85 PathProgramCache]: Analyzing trace with hash 455676119, now seen corresponding path program 1 times [2023-08-24 11:46:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332265573] [2023-08-24 11:46:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:15,299 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 11:46:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332265573] [2023-08-24 11:46:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332265573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:15,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 11:46:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843396009] [2023-08-24 11:46:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 11:46:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:15,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 11:46:15,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-24 11:46:15,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 203 [2023-08-24 11:46:15,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 147 transitions, 2240 flow. Second operand has 10 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 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 11:46:15,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:15,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 203 [2023-08-24 11:46:15,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:16,008 INFO L124 PetriNetUnfolderBase]: 306/624 cut-off events. [2023-08-24 11:46:16,009 INFO L125 PetriNetUnfolderBase]: For 5865/5865 co-relation queries the response was YES. [2023-08-24 11:46:16,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4555 conditions, 624 events. 306/624 cut-off events. For 5865/5865 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3021 event pairs, 31 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 4516. Up to 168 conditions per place. [2023-08-24 11:46:16,016 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 147 selfloop transitions, 93 changer transitions 5/245 dead transitions. [2023-08-24 11:46:16,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 245 transitions, 3959 flow [2023-08-24 11:46:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 11:46:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 11:46:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1074 transitions. [2023-08-24 11:46:16,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37790288529204785 [2023-08-24 11:46:16,019 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1074 transitions. [2023-08-24 11:46:16,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1074 transitions. [2023-08-24 11:46:16,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:16,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1074 transitions. [2023-08-24 11:46:16,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 76.71428571428571) internal successors, (1074), 14 states have internal predecessors, (1074), 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 11:46:16,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 203.0) internal successors, (3045), 15 states have internal predecessors, (3045), 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 11:46:16,026 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 203.0) internal successors, (3045), 15 states have internal predecessors, (3045), 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 11:46:16,027 INFO L175 Difference]: Start difference. First operand has 109 places, 147 transitions, 2240 flow. Second operand 14 states and 1074 transitions. [2023-08-24 11:46:16,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 245 transitions, 3959 flow [2023-08-24 11:46:16,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 245 transitions, 3840 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-24 11:46:16,055 INFO L231 Difference]: Finished difference. Result has 125 places, 182 transitions, 2965 flow [2023-08-24 11:46:16,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2965, PETRI_PLACES=125, PETRI_TRANSITIONS=182} [2023-08-24 11:46:16,056 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2023-08-24 11:46:16,056 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 182 transitions, 2965 flow [2023-08-24 11:46:16,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 71.6) internal successors, (716), 10 states have internal predecessors, (716), 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 11:46:16,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:16,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 11:46:16,069 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:16,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:16,069 INFO L85 PathProgramCache]: Analyzing trace with hash -766844908, now seen corresponding path program 2 times [2023-08-24 11:46:16,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:16,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951057138] [2023-08-24 11:46:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:16,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:17,010 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 11:46:17,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951057138] [2023-08-24 11:46:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951057138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:17,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:17,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 11:46:17,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238941123] [2023-08-24 11:46:17,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 11:46:17,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:17,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 11:46:17,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-24 11:46:17,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2023-08-24 11:46:17,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 182 transitions, 2965 flow. Second operand has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 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 11:46:17,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2023-08-24 11:46:17,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:17,512 INFO L124 PetriNetUnfolderBase]: 321/655 cut-off events. [2023-08-24 11:46:17,512 INFO L125 PetriNetUnfolderBase]: For 7089/7089 co-relation queries the response was YES. [2023-08-24 11:46:17,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5080 conditions, 655 events. 321/655 cut-off events. For 7089/7089 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3234 event pairs, 36 based on Foata normal form. 8/663 useless extension candidates. Maximal degree in co-relation 5034. Up to 488 conditions per place. [2023-08-24 11:46:17,518 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 170 selfloop transitions, 68 changer transitions 9/247 dead transitions. [2023-08-24 11:46:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 247 transitions, 4256 flow [2023-08-24 11:46:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 11:46:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 11:46:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 889 transitions. [2023-08-24 11:46:17,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649425287356322 [2023-08-24 11:46:17,523 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 889 transitions. [2023-08-24 11:46:17,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 889 transitions. [2023-08-24 11:46:17,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:17,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 889 transitions. [2023-08-24 11:46:17,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 74.08333333333333) internal successors, (889), 12 states have internal predecessors, (889), 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 11:46:17,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 11:46:17,529 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 11:46:17,529 INFO L175 Difference]: Start difference. First operand has 125 places, 182 transitions, 2965 flow. Second operand 12 states and 889 transitions. [2023-08-24 11:46:17,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 247 transitions, 4256 flow [2023-08-24 11:46:17,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 247 transitions, 4117 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-08-24 11:46:17,566 INFO L231 Difference]: Finished difference. Result has 137 places, 209 transitions, 3542 flow [2023-08-24 11:46:17,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3542, PETRI_PLACES=137, PETRI_TRANSITIONS=209} [2023-08-24 11:46:17,566 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 109 predicate places. [2023-08-24 11:46:17,566 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 209 transitions, 3542 flow [2023-08-24 11:46:17,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 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 11:46:17,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:17,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 11:46:17,567 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:17,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash -636111820, now seen corresponding path program 3 times [2023-08-24 11:46:17,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:17,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871118088] [2023-08-24 11:46:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:17,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:18,462 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 11:46:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871118088] [2023-08-24 11:46:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871118088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:18,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:18,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 11:46:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496146711] [2023-08-24 11:46:18,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:18,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 11:46:18,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 11:46:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-24 11:46:18,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 203 [2023-08-24 11:46:18,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 209 transitions, 3542 flow. Second operand has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 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 11:46:18,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:18,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 203 [2023-08-24 11:46:18,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:19,065 INFO L124 PetriNetUnfolderBase]: 363/739 cut-off events. [2023-08-24 11:46:19,065 INFO L125 PetriNetUnfolderBase]: For 8717/8717 co-relation queries the response was YES. [2023-08-24 11:46:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5838 conditions, 739 events. 363/739 cut-off events. For 8717/8717 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3799 event pairs, 27 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5787. Up to 426 conditions per place. [2023-08-24 11:46:19,074 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 150 selfloop transitions, 116 changer transitions 19/285 dead transitions. [2023-08-24 11:46:19,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 285 transitions, 4980 flow [2023-08-24 11:46:19,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 11:46:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 11:46:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 908 transitions. [2023-08-24 11:46:19,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727422003284072 [2023-08-24 11:46:19,077 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 908 transitions. [2023-08-24 11:46:19,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 908 transitions. [2023-08-24 11:46:19,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:19,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 908 transitions. [2023-08-24 11:46:19,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.66666666666667) internal successors, (908), 12 states have internal predecessors, (908), 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 11:46:19,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 11:46:19,082 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 203.0) internal successors, (2639), 13 states have internal predecessors, (2639), 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 11:46:19,082 INFO L175 Difference]: Start difference. First operand has 137 places, 209 transitions, 3542 flow. Second operand 12 states and 908 transitions. [2023-08-24 11:46:19,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 285 transitions, 4980 flow [2023-08-24 11:46:19,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 285 transitions, 4789 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-08-24 11:46:19,131 INFO L231 Difference]: Finished difference. Result has 146 places, 233 transitions, 4081 flow [2023-08-24 11:46:19,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4081, PETRI_PLACES=146, PETRI_TRANSITIONS=233} [2023-08-24 11:46:19,132 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 118 predicate places. [2023-08-24 11:46:19,132 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 233 transitions, 4081 flow [2023-08-24 11:46:19,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.25) internal successors, (831), 12 states have internal predecessors, (831), 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 11:46:19,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:19,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:19,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 11:46:19,133 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:19,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash -593437902, now seen corresponding path program 4 times [2023-08-24 11:46:19,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:19,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169373350] [2023-08-24 11:46:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:19,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:19,895 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 11:46:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169373350] [2023-08-24 11:46:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169373350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:19,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:19,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 11:46:19,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594180496] [2023-08-24 11:46:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:19,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 11:46:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 11:46:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-24 11:46:19,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 203 [2023-08-24 11:46:19,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 233 transitions, 4081 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 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 11:46:19,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:19,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 203 [2023-08-24 11:46:19,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:20,459 INFO L124 PetriNetUnfolderBase]: 381/803 cut-off events. [2023-08-24 11:46:20,459 INFO L125 PetriNetUnfolderBase]: For 10901/10901 co-relation queries the response was YES. [2023-08-24 11:46:20,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 803 events. 381/803 cut-off events. For 10901/10901 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4336 event pairs, 30 based on Foata normal form. 20/823 useless extension candidates. Maximal degree in co-relation 6536. Up to 430 conditions per place. [2023-08-24 11:46:20,468 INFO L140 encePairwiseOnDemand]: 193/203 looper letters, 186 selfloop transitions, 67 changer transitions 44/297 dead transitions. [2023-08-24 11:46:20,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 297 transitions, 5497 flow [2023-08-24 11:46:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 11:46:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 11:46:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 802 transitions. [2023-08-24 11:46:20,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39507389162561574 [2023-08-24 11:46:20,470 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 802 transitions. [2023-08-24 11:46:20,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 802 transitions. [2023-08-24 11:46:20,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:20,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 802 transitions. [2023-08-24 11:46:20,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 80.2) internal successors, (802), 10 states have internal predecessors, (802), 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 11:46:20,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 11:46:20,474 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 11:46:20,474 INFO L175 Difference]: Start difference. First operand has 146 places, 233 transitions, 4081 flow. Second operand 10 states and 802 transitions. [2023-08-24 11:46:20,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 297 transitions, 5497 flow [2023-08-24 11:46:20,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 297 transitions, 5268 flow, removed 45 selfloop flow, removed 6 redundant places. [2023-08-24 11:46:20,525 INFO L231 Difference]: Finished difference. Result has 154 places, 234 transitions, 4192 flow [2023-08-24 11:46:20,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4192, PETRI_PLACES=154, PETRI_TRANSITIONS=234} [2023-08-24 11:46:20,526 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 126 predicate places. [2023-08-24 11:46:20,526 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 234 transitions, 4192 flow [2023-08-24 11:46:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 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 11:46:20,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:20,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:20,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 11:46:20,527 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:20,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:20,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1800242511, now seen corresponding path program 2 times [2023-08-24 11:46:20,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:20,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457344219] [2023-08-24 11:46:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:20,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:21,456 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 11:46:21,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:21,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457344219] [2023-08-24 11:46:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457344219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:21,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 11:46:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579706782] [2023-08-24 11:46:21,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:21,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 11:46:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 11:46:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-24 11:46:21,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 203 [2023-08-24 11:46:21,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 234 transitions, 4192 flow. Second operand has 11 states, 11 states have (on average 72.45454545454545) internal successors, (797), 11 states have internal predecessors, (797), 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 11:46:21,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:21,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 203 [2023-08-24 11:46:21,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:22,172 INFO L124 PetriNetUnfolderBase]: 323/680 cut-off events. [2023-08-24 11:46:22,172 INFO L125 PetriNetUnfolderBase]: For 10567/10567 co-relation queries the response was YES. [2023-08-24 11:46:22,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 680 events. 323/680 cut-off events. For 10567/10567 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3562 event pairs, 19 based on Foata normal form. 4/684 useless extension candidates. Maximal degree in co-relation 5677. Up to 262 conditions per place. [2023-08-24 11:46:22,178 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 191 selfloop transitions, 106 changer transitions 8/305 dead transitions. [2023-08-24 11:46:22,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 305 transitions, 5827 flow [2023-08-24 11:46:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 11:46:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 11:46:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1002 transitions. [2023-08-24 11:46:22,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796892762410004 [2023-08-24 11:46:22,180 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1002 transitions. [2023-08-24 11:46:22,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1002 transitions. [2023-08-24 11:46:22,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:22,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1002 transitions. [2023-08-24 11:46:22,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.07692307692308) internal successors, (1002), 13 states have internal predecessors, (1002), 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 11:46:22,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 203.0) internal successors, (2842), 14 states have internal predecessors, (2842), 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 11:46:22,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 203.0) internal successors, (2842), 14 states have internal predecessors, (2842), 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 11:46:22,203 INFO L175 Difference]: Start difference. First operand has 154 places, 234 transitions, 4192 flow. Second operand 13 states and 1002 transitions. [2023-08-24 11:46:22,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 305 transitions, 5827 flow [2023-08-24 11:46:22,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 305 transitions, 5688 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-08-24 11:46:22,257 INFO L231 Difference]: Finished difference. Result has 164 places, 247 transitions, 4539 flow [2023-08-24 11:46:22,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4539, PETRI_PLACES=164, PETRI_TRANSITIONS=247} [2023-08-24 11:46:22,260 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2023-08-24 11:46:22,260 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 247 transitions, 4539 flow [2023-08-24 11:46:22,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 72.45454545454545) internal successors, (797), 11 states have internal predecessors, (797), 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 11:46:22,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:22,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:22,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 11:46:22,261 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:22,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash -683482976, now seen corresponding path program 5 times [2023-08-24 11:46:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:22,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458454638] [2023-08-24 11:46:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:23,376 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 11:46:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:23,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458454638] [2023-08-24 11:46:23,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458454638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:23,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 11:46:23,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900691960] [2023-08-24 11:46:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:23,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 11:46:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:23,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 11:46:23,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-24 11:46:23,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 203 [2023-08-24 11:46:23,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 247 transitions, 4539 flow. Second operand has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 11 states have internal predecessors, (807), 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 11:46:23,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:23,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 203 [2023-08-24 11:46:23,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:24,259 INFO L124 PetriNetUnfolderBase]: 356/748 cut-off events. [2023-08-24 11:46:24,259 INFO L125 PetriNetUnfolderBase]: For 12263/12263 co-relation queries the response was YES. [2023-08-24 11:46:24,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 748 events. 356/748 cut-off events. For 12263/12263 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4031 event pairs, 28 based on Foata normal form. 8/756 useless extension candidates. Maximal degree in co-relation 6570. Up to 503 conditions per place. [2023-08-24 11:46:24,266 INFO L140 encePairwiseOnDemand]: 191/203 looper letters, 208 selfloop transitions, 127 changer transitions 9/344 dead transitions. [2023-08-24 11:46:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 344 transitions, 6802 flow [2023-08-24 11:46:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 11:46:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 11:46:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1312 transitions. [2023-08-24 11:46:24,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3801796580701246 [2023-08-24 11:46:24,269 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1312 transitions. [2023-08-24 11:46:24,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1312 transitions. [2023-08-24 11:46:24,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:24,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1312 transitions. [2023-08-24 11:46:24,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 77.17647058823529) internal successors, (1312), 17 states have internal predecessors, (1312), 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 11:46:24,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 11:46:24,275 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 11:46:24,275 INFO L175 Difference]: Start difference. First operand has 164 places, 247 transitions, 4539 flow. Second operand 17 states and 1312 transitions. [2023-08-24 11:46:24,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 344 transitions, 6802 flow [2023-08-24 11:46:24,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 344 transitions, 6553 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-08-24 11:46:24,349 INFO L231 Difference]: Finished difference. Result has 181 places, 304 transitions, 5922 flow [2023-08-24 11:46:24,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5922, PETRI_PLACES=181, PETRI_TRANSITIONS=304} [2023-08-24 11:46:24,350 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 153 predicate places. [2023-08-24 11:46:24,350 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 304 transitions, 5922 flow [2023-08-24 11:46:24,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 73.36363636363636) internal successors, (807), 11 states have internal predecessors, (807), 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 11:46:24,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:24,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:24,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-24 11:46:24,350 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:24,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:24,351 INFO L85 PathProgramCache]: Analyzing trace with hash -603941006, now seen corresponding path program 6 times [2023-08-24 11:46:24,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:24,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475555184] [2023-08-24 11:46:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:25,162 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 11:46:25,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:25,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475555184] [2023-08-24 11:46:25,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475555184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:25,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:25,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 11:46:25,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121787656] [2023-08-24 11:46:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:25,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 11:46:25,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 11:46:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-24 11:46:25,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 203 [2023-08-24 11:46:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 304 transitions, 5922 flow. Second operand has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 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 11:46:25,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:25,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 203 [2023-08-24 11:46:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:25,927 INFO L124 PetriNetUnfolderBase]: 436/941 cut-off events. [2023-08-24 11:46:25,928 INFO L125 PetriNetUnfolderBase]: For 16299/16299 co-relation queries the response was YES. [2023-08-24 11:46:25,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 941 events. 436/941 cut-off events. For 16299/16299 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5515 event pairs, 28 based on Foata normal form. 28/969 useless extension candidates. Maximal degree in co-relation 8362. Up to 493 conditions per place. [2023-08-24 11:46:25,937 INFO L140 encePairwiseOnDemand]: 192/203 looper letters, 212 selfloop transitions, 137 changer transitions 78/427 dead transitions. [2023-08-24 11:46:25,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 427 transitions, 8637 flow [2023-08-24 11:46:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 11:46:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 11:46:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1292 transitions. [2023-08-24 11:46:25,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2023-08-24 11:46:25,940 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1292 transitions. [2023-08-24 11:46:25,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1292 transitions. [2023-08-24 11:46:25,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:25,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1292 transitions. [2023-08-24 11:46:25,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.0) internal successors, (1292), 17 states have internal predecessors, (1292), 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 11:46:25,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 11:46:25,946 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 203.0) internal successors, (3654), 18 states have internal predecessors, (3654), 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 11:46:25,946 INFO L175 Difference]: Start difference. First operand has 181 places, 304 transitions, 5922 flow. Second operand 17 states and 1292 transitions. [2023-08-24 11:46:25,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 427 transitions, 8637 flow [2023-08-24 11:46:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 427 transitions, 8316 flow, removed 121 selfloop flow, removed 5 redundant places. [2023-08-24 11:46:26,063 INFO L231 Difference]: Finished difference. Result has 198 places, 316 transitions, 6288 flow [2023-08-24 11:46:26,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6288, PETRI_PLACES=198, PETRI_TRANSITIONS=316} [2023-08-24 11:46:26,063 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 170 predicate places. [2023-08-24 11:46:26,064 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 316 transitions, 6288 flow [2023-08-24 11:46:26,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 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 11:46:26,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:26,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-24 11:46:26,064 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:26,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 215528096, now seen corresponding path program 7 times [2023-08-24 11:46:26,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:26,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945752467] [2023-08-24 11:46:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:26,814 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 11:46:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:26,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945752467] [2023-08-24 11:46:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945752467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 11:46:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557475027] [2023-08-24 11:46:26,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:26,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 11:46:26,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 11:46:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-24 11:46:26,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 203 [2023-08-24 11:46:26,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 316 transitions, 6288 flow. Second operand has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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 11:46:26,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:26,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 203 [2023-08-24 11:46:26,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:27,287 INFO L124 PetriNetUnfolderBase]: 363/792 cut-off events. [2023-08-24 11:46:27,287 INFO L125 PetriNetUnfolderBase]: For 15973/15973 co-relation queries the response was YES. [2023-08-24 11:46:27,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 792 events. 363/792 cut-off events. For 15973/15973 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4584 event pairs, 12 based on Foata normal form. 20/812 useless extension candidates. Maximal degree in co-relation 7485. Up to 240 conditions per place. [2023-08-24 11:46:27,293 INFO L140 encePairwiseOnDemand]: 197/203 looper letters, 45 selfloop transitions, 4 changer transitions 301/350 dead transitions. [2023-08-24 11:46:27,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 350 transitions, 7440 flow [2023-08-24 11:46:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 11:46:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 11:46:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 819 transitions. [2023-08-24 11:46:27,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40344827586206894 [2023-08-24 11:46:27,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 819 transitions. [2023-08-24 11:46:27,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 819 transitions. [2023-08-24 11:46:27,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:27,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 819 transitions. [2023-08-24 11:46:27,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 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 11:46:27,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 11:46:27,298 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 203.0) internal successors, (2233), 11 states have internal predecessors, (2233), 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 11:46:27,298 INFO L175 Difference]: Start difference. First operand has 198 places, 316 transitions, 6288 flow. Second operand 10 states and 819 transitions. [2023-08-24 11:46:27,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 350 transitions, 7440 flow [2023-08-24 11:46:27,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 350 transitions, 7120 flow, removed 73 selfloop flow, removed 6 redundant places. [2023-08-24 11:46:27,393 INFO L231 Difference]: Finished difference. Result has 203 places, 41 transitions, 563 flow [2023-08-24 11:46:27,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=5977, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=563, PETRI_PLACES=203, PETRI_TRANSITIONS=41} [2023-08-24 11:46:27,393 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 175 predicate places. [2023-08-24 11:46:27,393 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 41 transitions, 563 flow [2023-08-24 11:46:27,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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 11:46:27,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:27,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:27,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-24 11:46:27,394 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:27,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:27,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1719580597, now seen corresponding path program 3 times [2023-08-24 11:46:27,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:27,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718629032] [2023-08-24 11:46:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:27,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:27,801 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 11:46:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718629032] [2023-08-24 11:46:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718629032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:27,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:27,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:46:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801450702] [2023-08-24 11:46:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:27,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:46:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:46:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:46:27,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 203 [2023-08-24 11:46:27,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 41 transitions, 563 flow. Second operand has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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 11:46:27,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:27,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 203 [2023-08-24 11:46:27,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:28,031 INFO L124 PetriNetUnfolderBase]: 60/152 cut-off events. [2023-08-24 11:46:28,032 INFO L125 PetriNetUnfolderBase]: For 2267/2267 co-relation queries the response was YES. [2023-08-24 11:46:28,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 152 events. 60/152 cut-off events. For 2267/2267 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 496 event pairs, 10 based on Foata normal form. 8/160 useless extension candidates. Maximal degree in co-relation 1095. Up to 52 conditions per place. [2023-08-24 11:46:28,034 INFO L140 encePairwiseOnDemand]: 194/203 looper letters, 34 selfloop transitions, 15 changer transitions 27/76 dead transitions. [2023-08-24 11:46:28,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 76 transitions, 1218 flow [2023-08-24 11:46:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 11:46:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 11:46:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 917 transitions. [2023-08-24 11:46:28,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106583072100313 [2023-08-24 11:46:28,039 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 917 transitions. [2023-08-24 11:46:28,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 917 transitions. [2023-08-24 11:46:28,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:28,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 917 transitions. [2023-08-24 11:46:28,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 83.36363636363636) internal successors, (917), 11 states have internal predecessors, (917), 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 11:46:28,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:28,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 203.0) internal successors, (2436), 12 states have internal predecessors, (2436), 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 11:46:28,045 INFO L175 Difference]: Start difference. First operand has 203 places, 41 transitions, 563 flow. Second operand 11 states and 917 transitions. [2023-08-24 11:46:28,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 76 transitions, 1218 flow [2023-08-24 11:46:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 76 transitions, 749 flow, removed 73 selfloop flow, removed 54 redundant places. [2023-08-24 11:46:28,052 INFO L231 Difference]: Finished difference. Result has 101 places, 37 transitions, 361 flow [2023-08-24 11:46:28,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=361, PETRI_PLACES=101, PETRI_TRANSITIONS=37} [2023-08-24 11:46:28,053 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 73 predicate places. [2023-08-24 11:46:28,053 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 37 transitions, 361 flow [2023-08-24 11:46:28,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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 11:46:28,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:46:28,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:46:28,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-24 11:46:28,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 11:46:28,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:46:28,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2143592875, now seen corresponding path program 4 times [2023-08-24 11:46:28,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:46:28,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680756055] [2023-08-24 11:46:28,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:46:28,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:46:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:46:28,709 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 11:46:28,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:46:28,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680756055] [2023-08-24 11:46:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680756055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:46:28,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:46:28,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 11:46:28,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095829922] [2023-08-24 11:46:28,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:46:28,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 11:46:28,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:46:28,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 11:46:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 11:46:28,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 203 [2023-08-24 11:46:28,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 37 transitions, 361 flow. Second operand has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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 11:46:28,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:46:28,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 203 [2023-08-24 11:46:28,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:46:28,858 INFO L124 PetriNetUnfolderBase]: 39/96 cut-off events. [2023-08-24 11:46:28,858 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-08-24 11:46:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 96 events. 39/96 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 2 based on Foata normal form. 8/104 useless extension candidates. Maximal degree in co-relation 508. Up to 43 conditions per place. [2023-08-24 11:46:28,859 INFO L140 encePairwiseOnDemand]: 196/203 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2023-08-24 11:46:28,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 43 transitions, 467 flow [2023-08-24 11:46:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:46:28,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:46:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 667 transitions. [2023-08-24 11:46:28,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2023-08-24 11:46:28,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 667 transitions. [2023-08-24 11:46:28,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 667 transitions. [2023-08-24 11:46:28,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:46:28,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 667 transitions. [2023-08-24 11:46:28,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 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 11:46:28,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:28,863 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 203.0) internal successors, (1827), 9 states have internal predecessors, (1827), 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 11:46:28,863 INFO L175 Difference]: Start difference. First operand has 101 places, 37 transitions, 361 flow. Second operand 8 states and 667 transitions. [2023-08-24 11:46:28,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 43 transitions, 467 flow [2023-08-24 11:46:28,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 43 transitions, 377 flow, removed 15 selfloop flow, removed 15 redundant places. [2023-08-24 11:46:28,866 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2023-08-24 11:46:28,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2023-08-24 11:46:28,866 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 59 predicate places. [2023-08-24 11:46:28,866 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2023-08-24 11:46:28,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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 11:46:28,869 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-24 11:46:28,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-24 11:46:28,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-24 11:46:28,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 11:46:28,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-24 11:46:28,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-24 11:46:28,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-24 11:46:28,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-24 11:46:28,875 INFO L445 BasicCegarLoop]: Path program histogram: [7, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2023-08-24 11:46:28,879 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:46:28,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:46:28,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:46:28 BasicIcfg [2023-08-24 11:46:28,881 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:46:28,883 INFO L158 Benchmark]: Toolchain (without parser) took 39817.86ms. Allocated memory was 385.9MB in the beginning and 903.9MB in the end (delta: 518.0MB). Free memory was 360.5MB in the beginning and 806.3MB in the end (delta: -445.8MB). Peak memory consumption was 74.0MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,884 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 385.9MB. Free memory is still 362.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:46:28,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.10ms. Allocated memory is still 385.9MB. Free memory was 360.2MB in the beginning and 332.4MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.39ms. Allocated memory is still 385.9MB. Free memory was 332.4MB in the beginning and 328.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,884 INFO L158 Benchmark]: Boogie Preprocessor took 46.86ms. Allocated memory is still 385.9MB. Free memory was 328.9MB in the beginning and 326.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,885 INFO L158 Benchmark]: RCFGBuilder took 889.12ms. Allocated memory is still 385.9MB. Free memory was 326.5MB in the beginning and 307.6MB in the end (delta: 18.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,885 INFO L158 Benchmark]: TraceAbstraction took 38235.74ms. Allocated memory was 385.9MB in the beginning and 903.9MB in the end (delta: 518.0MB). Free memory was 306.8MB in the beginning and 806.3MB in the end (delta: -499.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. [2023-08-24 11:46:28,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 385.9MB. Free memory is still 362.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 580.10ms. Allocated memory is still 385.9MB. Free memory was 360.2MB in the beginning and 332.4MB in the end (delta: 27.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.39ms. Allocated memory is still 385.9MB. Free memory was 332.4MB in the beginning and 328.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.86ms. Allocated memory is still 385.9MB. Free memory was 328.9MB in the beginning and 326.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 889.12ms. Allocated memory is still 385.9MB. Free memory was 326.5MB in the beginning and 307.6MB in the end (delta: 18.8MB). Peak memory consumption was 23.5MB. Max. memory is 16.0GB. * TraceAbstraction took 38235.74ms. Allocated memory was 385.9MB in the beginning and 903.9MB in the end (delta: 518.0MB). Free memory was 306.8MB in the beginning and 806.3MB in the end (delta: -499.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 110 PlacesBefore, 28 PlacesAfterwards, 105 TransitionsBefore, 21 TransitionsAfterwards, 1314 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 96 TotalNumberOfCompositions, 4349 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1172, independent conditional: 0, independent unconditional: 1172, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 728, independent: 685, independent conditional: 0, independent unconditional: 685, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 728, unknown conditional: 0, unknown unconditional: 728] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 7 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: 38.1s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1122 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1122 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 502 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3705 IncrementalHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 502 mSolverCounterUnsat, 0 mSDtfsCounter, 3705 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 286 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6288occurred in iteration=24, InterpolantAutomatonStates: 244, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 337 ConstructedInterpolants, 0 QuantifiedInterpolants, 6103 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 11:46:28,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...