/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-ext/03_incdec.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:39:22,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:39:22,099 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 [2023-08-27 09:39:22,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:39:22,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:39:22,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:39:22,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:39:22,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:39:22,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:39:22,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:39:22,134 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:39:22,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:39:22,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:39:22,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:39:22,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:39:22,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:39:22,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:39:22,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:39:22,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:39:22,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:39:22,138 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:39:22,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:39:22,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:39:22,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:39:22,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:39:22,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:39:22,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:39:22,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:39:22,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:39:22,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:39:22,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:39:22,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:39:22,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:39:22,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:39:22,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:39:22,388 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:39:22,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec.i [2023-08-27 09:39:23,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:39:23,646 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:39:23,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec.i [2023-08-27 09:39:23,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0d5ebb4/62fe8d95ae404606a56ecd3aa12c5ce5/FLAG3f67c2966 [2023-08-27 09:39:23,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0d5ebb4/62fe8d95ae404606a56ecd3aa12c5ce5 [2023-08-27 09:39:23,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:39:23,683 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:39:23,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:39:23,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:39:23,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:39:23,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:39:23" (1/1) ... [2023-08-27 09:39:23,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7afa122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:23, skipping insertion in model container [2023-08-27 09:39:23,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:39:23" (1/1) ... [2023-08-27 09:39:23,731 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:39:23,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:39:23,961 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:39:23,988 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-27 09:39:23,990 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [254] [2023-08-27 09:39:23,995 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [689] [2023-08-27 09:39:23,996 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [700] [2023-08-27 09:39:23,996 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [701] [2023-08-27 09:39:23,997 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [702] [2023-08-27 09:39:23,997 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [703] [2023-08-27 09:39:23,998 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: inline unsigned [716] [2023-08-27 09:39:23,998 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [717] [2023-08-27 09:39:24,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:39:24,027 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:39:24,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24 WrapperNode [2023-08-27 09:39:24,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:39:24,029 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:39:24,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:39:24,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:39:24,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,059 INFO L138 Inliner]: procedures = 172, calls = 26, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 140 [2023-08-27 09:39:24,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:39:24,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:39:24,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:39:24,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:39:24,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:39:24,080 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:39:24,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:39:24,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:39:24,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (1/1) ... [2023-08-27 09:39:24,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:39:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:39:24,104 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) [2023-08-27 09:39:24,167 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 [2023-08-27 09:39:24,178 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 09:39:24,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:39:24,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:39:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:39:24,182 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 09:39:24,266 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:39:24,267 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:39:24,425 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:39:24,520 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:39:24,520 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 09:39:24,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:39:24 BoogieIcfgContainer [2023-08-27 09:39:24,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:39:24,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:39:24,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:39:24,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:39:24,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:39:23" (1/3) ... [2023-08-27 09:39:24,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3179673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:39:24, skipping insertion in model container [2023-08-27 09:39:24,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:39:24" (2/3) ... [2023-08-27 09:39:24,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3179673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:39:24, skipping insertion in model container [2023-08-27 09:39:24,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:39:24" (3/3) ... [2023-08-27 09:39:24,528 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2023-08-27 09:39:24,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:39:24,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-27 09:39:24,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:39:24,606 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:39:24,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,659 INFO L124 PetriNetUnfolderBase]: 9/99 cut-off events. [2023-08-27 09:39:24,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:24,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 9/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-08-27 09:39:24,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:39:24,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:24,703 INFO L124 PetriNetUnfolderBase]: 9/99 cut-off events. [2023-08-27 09:39:24,703 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:24,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 9/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-08-27 09:39:24,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-08-27 09:39:28,211 INFO L134 LiptonReduction]: Checked pairs total: 1644 [2023-08-27 09:39:28,211 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-27 09:39:28,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:39:28,246 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:39:28,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 09:39:28,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:39:28,249 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 09:39:28,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:28,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:28,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 09:39:28,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT] === [2023-08-27 09:39:28,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash 18695041, now seen corresponding path program 1 times [2023-08-27 09:39:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932113015] [2023-08-27 09:39:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:39:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932113015] [2023-08-27 09:39:28,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932113015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:28,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:28,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 09:39:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146258666] [2023-08-27 09:39:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:28,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 09:39:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 09:39:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 09:39:28,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 216 [2023-08-27 09:39:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 9 transitions, 23 flow. Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 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) [2023-08-27 09:39:28,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:28,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 216 [2023-08-27 09:39:28,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:28,392 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-27 09:39:28,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-27 09:39:28,392 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-27 09:39:28,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-27 09:39:28,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 09:39:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 09:39:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 148 transitions. [2023-08-27 09:39:28,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425925925925926 [2023-08-27 09:39:28,400 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 148 transitions. [2023-08-27 09:39:28,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 148 transitions. [2023-08-27 09:39:28,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:28,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 148 transitions. [2023-08-27 09:39:28,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 74.0) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:39:28,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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) [2023-08-27 09:39:28,407 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 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) [2023-08-27 09:39:28,408 INFO L175 Difference]: Start difference. First operand has 12 places, 9 transitions, 23 flow. Second operand 2 states and 148 transitions. [2023-08-27 09:39:28,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-27 09:39:28,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:39:28,410 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-27 09:39:28,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-27 09:39:28,413 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, -2 predicate places. [2023-08-27 09:39:28,413 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-27 09:39:28,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 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) [2023-08-27 09:39:28,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 09:39:28,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2023-08-27 09:39:28,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2023-08-27 09:39:28,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2023-08-27 09:39:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:39:28,416 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:39:28,417 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 09:39:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,438 INFO L124 PetriNetUnfolderBase]: 9/99 cut-off events. [2023-08-27 09:39:28,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:28,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 9/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-08-27 09:39:28,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:39:28,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 89 transitions, 183 flow [2023-08-27 09:39:28,459 INFO L124 PetriNetUnfolderBase]: 9/99 cut-off events. [2023-08-27 09:39:28,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:28,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 9/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 177 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 73. Up to 4 conditions per place. [2023-08-27 09:39:28,462 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-08-27 09:39:31,803 INFO L134 LiptonReduction]: Checked pairs total: 1696 [2023-08-27 09:39:31,803 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-27 09:39:31,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 09:39:31,805 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:39:31,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 09:39:31,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:39:31,807 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-27 09:39:31,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:39:31,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:31,808 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 09:39:31,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 09:39:31,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:31,808 INFO L85 PathProgramCache]: Analyzing trace with hash 414264670, now seen corresponding path program 1 times [2023-08-27 09:39:31,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416837364] [2023-08-27 09:39:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:39:31,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:39:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:39:31,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:39:31,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:39:31,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 09:39:31,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:39:31,882 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:39:31,882 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 09:39:31,883 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 09:39:31,883 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 09:39:31,913 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:39:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,948 INFO L124 PetriNetUnfolderBase]: 17/173 cut-off events. [2023-08-27 09:39:31,950 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:31,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 17/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-27 09:39:31,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,954 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,959 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:39:31,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:31,979 INFO L124 PetriNetUnfolderBase]: 17/173 cut-off events. [2023-08-27 09:39:31,980 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:31,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 17/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-27 09:39:31,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 10736 [2023-08-27 09:39:34,019 INFO L134 LiptonReduction]: Checked pairs total: 34321 [2023-08-27 09:39:34,020 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-27 09:39:34,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:39:34,025 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:39:34,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-27 09:39:34,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:39:34,029 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2023-08-27 09:39:34,029 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:34,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:34,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1086296412, now seen corresponding path program 1 times [2023-08-27 09:39:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12130370] [2023-08-27 09:39:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:39:34,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:34,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12130370] [2023-08-27 09:39:34,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12130370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:34,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:34,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:39:34,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704584140] [2023-08-27 09:39:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:34,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:39:34,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:39:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:39:34,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 292 [2023-08-27 09:39:34,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 70 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-08-27 09:39:34,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:34,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 292 [2023-08-27 09:39:34,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:34,557 INFO L124 PetriNetUnfolderBase]: 995/1773 cut-off events. [2023-08-27 09:39:34,557 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 09:39:34,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3540 conditions, 1773 events. 995/1773 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11280 event pairs, 289 based on Foata normal form. 64/1533 useless extension candidates. Maximal degree in co-relation 2524. Up to 584 conditions per place. [2023-08-27 09:39:34,564 INFO L140 encePairwiseOnDemand]: 272/292 looper letters, 77 selfloop transitions, 10 changer transitions 10/104 dead transitions. [2023-08-27 09:39:34,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 104 transitions, 424 flow [2023-08-27 09:39:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:39:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:39:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 645 transitions. [2023-08-27 09:39:34,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681506849315068 [2023-08-27 09:39:34,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 645 transitions. [2023-08-27 09:39:34,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 645 transitions. [2023-08-27 09:39:34,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:34,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 645 transitions. [2023-08-27 09:39:34,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 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) [2023-08-27 09:39:34,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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) [2023-08-27 09:39:34,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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) [2023-08-27 09:39:34,575 INFO L175 Difference]: Start difference. First operand has 62 places, 70 transitions, 152 flow. Second operand 6 states and 645 transitions. [2023-08-27 09:39:34,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 104 transitions, 424 flow [2023-08-27 09:39:34,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 422 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 09:39:34,577 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 176 flow [2023-08-27 09:39:34,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-27 09:39:34,578 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2023-08-27 09:39:34,578 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 176 flow [2023-08-27 09:39:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2023-08-27 09:39:34,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:34,579 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:34,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:39:34,579 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:34,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:34,579 INFO L85 PathProgramCache]: Analyzing trace with hash -304150230, now seen corresponding path program 1 times [2023-08-27 09:39:34,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:34,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546143082] [2023-08-27 09:39:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:34,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:34,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546143082] [2023-08-27 09:39:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546143082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:34,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:34,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:39:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384510654] [2023-08-27 09:39:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:39:34,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:39:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:39:34,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 292 [2023-08-27 09:39:34,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2023-08-27 09:39:34,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:34,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 292 [2023-08-27 09:39:34,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:34,881 INFO L124 PetriNetUnfolderBase]: 919/1696 cut-off events. [2023-08-27 09:39:34,881 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-27 09:39:34,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3680 conditions, 1696 events. 919/1696 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 10975 event pairs, 269 based on Foata normal form. 10/1552 useless extension candidates. Maximal degree in co-relation 2162. Up to 595 conditions per place. [2023-08-27 09:39:34,888 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 70 selfloop transitions, 12 changer transitions 9/98 dead transitions. [2023-08-27 09:39:34,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 461 flow [2023-08-27 09:39:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:39:34,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:39:34,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2023-08-27 09:39:34,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504566210045662 [2023-08-27 09:39:34,890 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 614 transitions. [2023-08-27 09:39:34,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 614 transitions. [2023-08-27 09:39:34,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:34,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 614 transitions. [2023-08-27 09:39:34,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 states have internal predecessors, (614), 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) [2023-08-27 09:39:34,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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) [2023-08-27 09:39:34,895 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 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) [2023-08-27 09:39:34,895 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 176 flow. Second operand 6 states and 614 transitions. [2023-08-27 09:39:34,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 461 flow [2023-08-27 09:39:34,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:39:34,898 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 227 flow [2023-08-27 09:39:34,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-27 09:39:34,899 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2023-08-27 09:39:34,899 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 227 flow [2023-08-27 09:39:34,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 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) [2023-08-27 09:39:34,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:34,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:39:34,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:34,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash 280493709, now seen corresponding path program 1 times [2023-08-27 09:39:34,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488387469] [2023-08-27 09:39:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:34,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:34,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:34,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488387469] [2023-08-27 09:39:34,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488387469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:34,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:34,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:39:34,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963280496] [2023-08-27 09:39:34,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:39:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:34,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:39:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:39:34,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 292 [2023-08-27 09:39:34,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-27 09:39:34,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:34,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 292 [2023-08-27 09:39:34,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:35,067 INFO L124 PetriNetUnfolderBase]: 563/1139 cut-off events. [2023-08-27 09:39:35,067 INFO L125 PetriNetUnfolderBase]: For 276/294 co-relation queries the response was YES. [2023-08-27 09:39:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 1139 events. 563/1139 cut-off events. For 276/294 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7444 event pairs, 413 based on Foata normal form. 20/1083 useless extension candidates. Maximal degree in co-relation 1643. Up to 790 conditions per place. [2023-08-27 09:39:35,072 INFO L140 encePairwiseOnDemand]: 287/292 looper letters, 36 selfloop transitions, 2 changer transitions 2/67 dead transitions. [2023-08-27 09:39:35,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 325 flow [2023-08-27 09:39:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:39:35,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:39:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-27 09:39:35,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-27 09:39:35,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-27 09:39:35,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-27 09:39:35,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:35,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-27 09:39:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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) [2023-08-27 09:39:35,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-27 09:39:35,076 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-27 09:39:35,076 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 227 flow. Second operand 3 states and 365 transitions. [2023-08-27 09:39:35,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 325 flow [2023-08-27 09:39:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:39:35,079 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 235 flow [2023-08-27 09:39:35,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-08-27 09:39:35,080 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2023-08-27 09:39:35,080 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 235 flow [2023-08-27 09:39:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-27 09:39:35,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:35,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:35,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 09:39:35,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:35,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:35,081 INFO L85 PathProgramCache]: Analyzing trace with hash -794643855, now seen corresponding path program 1 times [2023-08-27 09:39:35,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:35,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080529771] [2023-08-27 09:39:35,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:35,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080529771] [2023-08-27 09:39:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080529771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:35,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:35,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:39:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259149632] [2023-08-27 09:39:35,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:35,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:39:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:39:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:39:35,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 292 [2023-08-27 09:39:35,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-27 09:39:35,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:35,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 292 [2023-08-27 09:39:35,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:35,202 INFO L124 PetriNetUnfolderBase]: 417/908 cut-off events. [2023-08-27 09:39:35,202 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-08-27 09:39:35,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2081 conditions, 908 events. 417/908 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6047 event pairs, 208 based on Foata normal form. 0/843 useless extension candidates. Maximal degree in co-relation 1827. Up to 719 conditions per place. [2023-08-27 09:39:35,206 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 23 selfloop transitions, 2 changer transitions 18/62 dead transitions. [2023-08-27 09:39:35,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 328 flow [2023-08-27 09:39:35,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:39:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:39:35,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-27 09:39:35,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098173515981735 [2023-08-27 09:39:35,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-27 09:39:35,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-27 09:39:35,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:35,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-27 09:39:35,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-08-27 09:39:35,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-27 09:39:35,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-27 09:39:35,210 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 235 flow. Second operand 3 states and 359 transitions. [2023-08-27 09:39:35,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 328 flow [2023-08-27 09:39:35,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:39:35,213 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 193 flow [2023-08-27 09:39:35,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2023-08-27 09:39:35,213 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2023-08-27 09:39:35,214 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 193 flow [2023-08-27 09:39:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-27 09:39:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:35,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 09:39:35,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:35,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 935732777, now seen corresponding path program 1 times [2023-08-27 09:39:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479806282] [2023-08-27 09:39:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479806282] [2023-08-27 09:39:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479806282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:39:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439856214] [2023-08-27 09:39:35,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:35,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:39:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:39:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:39:35,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 292 [2023-08-27 09:39:35,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2023-08-27 09:39:35,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:35,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 292 [2023-08-27 09:39:35,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:35,486 INFO L124 PetriNetUnfolderBase]: 773/1464 cut-off events. [2023-08-27 09:39:35,486 INFO L125 PetriNetUnfolderBase]: For 1138/1158 co-relation queries the response was YES. [2023-08-27 09:39:35,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1464 events. 773/1464 cut-off events. For 1138/1158 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9637 event pairs, 243 based on Foata normal form. 40/1466 useless extension candidates. Maximal degree in co-relation 3540. Up to 816 conditions per place. [2023-08-27 09:39:35,492 INFO L140 encePairwiseOnDemand]: 282/292 looper letters, 52 selfloop transitions, 15 changer transitions 2/76 dead transitions. [2023-08-27 09:39:35,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 457 flow [2023-08-27 09:39:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:39:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:39:35,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-08-27 09:39:35,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2023-08-27 09:39:35,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:35,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 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) [2023-08-27 09:39:35,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:35,498 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:35,498 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 193 flow. Second operand 7 states and 657 transitions. [2023-08-27 09:39:35,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 457 flow [2023-08-27 09:39:35,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:39:35,502 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 275 flow [2023-08-27 09:39:35,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=275, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-08-27 09:39:35,502 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-08-27 09:39:35,503 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 275 flow [2023-08-27 09:39:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2023-08-27 09:39:35,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:35,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 09:39:35,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:35,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2061334295, now seen corresponding path program 2 times [2023-08-27 09:39:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365511764] [2023-08-27 09:39:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:35,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365511764] [2023-08-27 09:39:35,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365511764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:35,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:35,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:39:35,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151117600] [2023-08-27 09:39:35,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:35,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:39:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:35,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:39:35,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:39:35,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 292 [2023-08-27 09:39:35,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2023-08-27 09:39:35,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:35,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 292 [2023-08-27 09:39:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:35,810 INFO L124 PetriNetUnfolderBase]: 853/1653 cut-off events. [2023-08-27 09:39:35,810 INFO L125 PetriNetUnfolderBase]: For 2186/2206 co-relation queries the response was YES. [2023-08-27 09:39:35,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 1653 events. 853/1653 cut-off events. For 2186/2206 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11426 event pairs, 355 based on Foata normal form. 36/1663 useless extension candidates. Maximal degree in co-relation 3858. Up to 821 conditions per place. [2023-08-27 09:39:35,816 INFO L140 encePairwiseOnDemand]: 282/292 looper letters, 53 selfloop transitions, 18 changer transitions 4/82 dead transitions. [2023-08-27 09:39:35,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 566 flow [2023-08-27 09:39:35,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:39:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:39:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 657 transitions. [2023-08-27 09:39:35,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2023-08-27 09:39:35,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:35,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 657 transitions. [2023-08-27 09:39:35,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.85714285714286) internal successors, (657), 7 states have internal predecessors, (657), 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) [2023-08-27 09:39:35,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:35,822 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:35,822 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 275 flow. Second operand 7 states and 657 transitions. [2023-08-27 09:39:35,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 566 flow [2023-08-27 09:39:35,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 528 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 09:39:35,828 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 357 flow [2023-08-27 09:39:35,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-08-27 09:39:35,829 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-08-27 09:39:35,829 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 357 flow [2023-08-27 09:39:35,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.5) internal successors, (519), 6 states have internal predecessors, (519), 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) [2023-08-27 09:39:35,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:35,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:35,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 09:39:35,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:35,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1291327555, now seen corresponding path program 3 times [2023-08-27 09:39:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239108347] [2023-08-27 09:39:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239108347] [2023-08-27 09:39:35,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239108347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:39:35,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208189582] [2023-08-27 09:39:35,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:39:35,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:39:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:39:35,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:39:35,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 09:39:36,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-27 09:39:36,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:39:36,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 09:39:36,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:39:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:36,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:39:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:36,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208189582] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 09:39:36,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 09:39:36,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 12 [2023-08-27 09:39:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600657059] [2023-08-27 09:39:36,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:36,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:39:36,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:36,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:39:36,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-27 09:39:36,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 292 [2023-08-27 09:39:36,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 357 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-27 09:39:36,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:36,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 292 [2023-08-27 09:39:36,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:36,241 INFO L124 PetriNetUnfolderBase]: 320/874 cut-off events. [2023-08-27 09:39:36,242 INFO L125 PetriNetUnfolderBase]: For 1323/1333 co-relation queries the response was YES. [2023-08-27 09:39:36,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 874 events. 320/874 cut-off events. For 1323/1333 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6506 event pairs, 72 based on Foata normal form. 54/902 useless extension candidates. Maximal degree in co-relation 1703. Up to 482 conditions per place. [2023-08-27 09:39:36,245 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 15 selfloop transitions, 12 changer transitions 23/67 dead transitions. [2023-08-27 09:39:36,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 473 flow [2023-08-27 09:39:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:39:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:39:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2023-08-27 09:39:36,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964041095890411 [2023-08-27 09:39:36,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2023-08-27 09:39:36,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2023-08-27 09:39:36,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:36,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2023-08-27 09:39:36,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2023-08-27 09:39:36,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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) [2023-08-27 09:39:36,250 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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) [2023-08-27 09:39:36,250 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 357 flow. Second operand 4 states and 463 transitions. [2023-08-27 09:39:36,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 473 flow [2023-08-27 09:39:36,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 448 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 09:39:36,255 INFO L231 Difference]: Finished difference. Result has 65 places, 39 transitions, 228 flow [2023-08-27 09:39:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=65, PETRI_TRANSITIONS=39} [2023-08-27 09:39:36,256 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2023-08-27 09:39:36,256 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 39 transitions, 228 flow [2023-08-27 09:39:36,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-27 09:39:36,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:36,257 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:36,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 09:39:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:39:36,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:36,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:36,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1228369719, now seen corresponding path program 1 times [2023-08-27 09:39:36,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:36,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147486356] [2023-08-27 09:39:36,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:36,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147486356] [2023-08-27 09:39:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147486356] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:39:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719540807] [2023-08-27 09:39:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:36,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:39:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:39:36,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:39:36,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 09:39:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:36,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 09:39:36,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:39:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:36,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:39:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:39:36,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719540807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:39:36,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:39:36,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 09:39:36,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612221096] [2023-08-27 09:39:36,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:39:36,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 09:39:36,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 09:39:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-27 09:39:36,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 292 [2023-08-27 09:39:36,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 39 transitions, 228 flow. Second operand has 17 states, 17 states have (on average 83.82352941176471) internal successors, (1425), 17 states have internal predecessors, (1425), 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) [2023-08-27 09:39:36,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:36,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 292 [2023-08-27 09:39:36,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:37,302 INFO L124 PetriNetUnfolderBase]: 191/446 cut-off events. [2023-08-27 09:39:37,302 INFO L125 PetriNetUnfolderBase]: For 629/629 co-relation queries the response was YES. [2023-08-27 09:39:37,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 446 events. 191/446 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2526 event pairs, 29 based on Foata normal form. 12/455 useless extension candidates. Maximal degree in co-relation 1234. Up to 117 conditions per place. [2023-08-27 09:39:37,304 INFO L140 encePairwiseOnDemand]: 281/292 looper letters, 20 selfloop transitions, 6 changer transitions 58/89 dead transitions. [2023-08-27 09:39:37,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 573 flow [2023-08-27 09:39:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 09:39:37,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 09:39:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1211 transitions. [2023-08-27 09:39:37,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2962328767123288 [2023-08-27 09:39:37,307 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1211 transitions. [2023-08-27 09:39:37,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1211 transitions. [2023-08-27 09:39:37,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:37,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1211 transitions. [2023-08-27 09:39:37,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 86.5) internal successors, (1211), 14 states have internal predecessors, (1211), 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) [2023-08-27 09:39:37,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 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) [2023-08-27 09:39:37,314 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 292.0) internal successors, (4380), 15 states have internal predecessors, (4380), 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) [2023-08-27 09:39:37,314 INFO L175 Difference]: Start difference. First operand has 65 places, 39 transitions, 228 flow. Second operand 14 states and 1211 transitions. [2023-08-27 09:39:37,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 573 flow [2023-08-27 09:39:37,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 536 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-27 09:39:37,317 INFO L231 Difference]: Finished difference. Result has 66 places, 26 transitions, 137 flow [2023-08-27 09:39:37,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=137, PETRI_PLACES=66, PETRI_TRANSITIONS=26} [2023-08-27 09:39:37,317 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2023-08-27 09:39:37,317 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 26 transitions, 137 flow [2023-08-27 09:39:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 83.82352941176471) internal successors, (1425), 17 states have internal predecessors, (1425), 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) [2023-08-27 09:39:37,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:37,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:37,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 09:39:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-27 09:39:37,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 2 more)] === [2023-08-27 09:39:37,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -302855493, now seen corresponding path program 1 times [2023-08-27 09:39:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855058180] [2023-08-27 09:39:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:37,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855058180] [2023-08-27 09:39:37,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855058180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:37,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:37,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:39:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116933975] [2023-08-27 09:39:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:39:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:39:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:39:37,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 292 [2023-08-27 09:39:37,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 26 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2023-08-27 09:39:37,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:37,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 292 [2023-08-27 09:39:37,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:37,703 INFO L124 PetriNetUnfolderBase]: 19/72 cut-off events. [2023-08-27 09:39:37,703 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-27 09:39:37,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 72 events. 19/72 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 4/76 useless extension candidates. Maximal degree in co-relation 208. Up to 30 conditions per place. [2023-08-27 09:39:37,703 INFO L140 encePairwiseOnDemand]: 286/292 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-27 09:39:37,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 30 transitions, 190 flow [2023-08-27 09:39:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 09:39:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 09:39:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 612 transitions. [2023-08-27 09:39:37,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.299412915851272 [2023-08-27 09:39:37,705 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 612 transitions. [2023-08-27 09:39:37,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 612 transitions. [2023-08-27 09:39:37,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:37,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 612 transitions. [2023-08-27 09:39:37,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.42857142857143) internal successors, (612), 7 states have internal predecessors, (612), 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) [2023-08-27 09:39:37,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:37,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 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) [2023-08-27 09:39:37,708 INFO L175 Difference]: Start difference. First operand has 66 places, 26 transitions, 137 flow. Second operand 7 states and 612 transitions. [2023-08-27 09:39:37,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 30 transitions, 190 flow [2023-08-27 09:39:37,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 154 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-27 09:39:37,709 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-27 09:39:37,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-27 09:39:37,710 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-27 09:39:37,710 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-27 09:39:37,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 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) [2023-08-27 09:39:37,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2023-08-27 09:39:37,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2023-08-27 09:39:37,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2023-08-27 09:39:37,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2023-08-27 09:39:37,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2023-08-27 09:39:37,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2023-08-27 09:39:37,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 09:39:37,711 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:37,711 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 09:39:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,721 INFO L124 PetriNetUnfolderBase]: 17/173 cut-off events. [2023-08-27 09:39:37,721 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:37,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 17/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-27 09:39:37,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,722 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:39:37,723 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,723 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 151 transitions, 314 flow [2023-08-27 09:39:37,731 INFO L124 PetriNetUnfolderBase]: 17/173 cut-off events. [2023-08-27 09:39:37,731 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:37,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 173 events. 17/173 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 533 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-27 09:39:37,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 10736 [2023-08-27 09:39:39,503 INFO L134 LiptonReduction]: Checked pairs total: 40056 [2023-08-27 09:39:39,503 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-27 09:39:39,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 09:39:39,504 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:39:39,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 09:39:39,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:39:39,507 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2023-08-27 09:39:39,507 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:39:39,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:39,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 09:39:39,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 09:39:39,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2003747825, now seen corresponding path program 1 times [2023-08-27 09:39:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:39,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384780581] [2023-08-27 09:39:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:39,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:39:39,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:39:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:39:39,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:39:39,530 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:39:39,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 09:39:39,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 09:39:39,530 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:39:39,531 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 09:39:39,531 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 09:39:39,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 09:39:39,557 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:39:39,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,575 INFO L124 PetriNetUnfolderBase]: 25/247 cut-off events. [2023-08-27 09:39:39,575 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 09:39:39,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 25/247 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 896 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-08-27 09:39:39,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:39:39,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:39:39,598 INFO L124 PetriNetUnfolderBase]: 25/247 cut-off events. [2023-08-27 09:39:39,598 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 09:39:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 25/247 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 896 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-08-27 09:39:39,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 27450 [2023-08-27 09:39:42,579 INFO L134 LiptonReduction]: Checked pairs total: 104651 [2023-08-27 09:39:42,579 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-27 09:39:42,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:39:42,581 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:39:42,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-27 09:39:42,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:39:42,583 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2023-08-27 09:39:42,583 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 09:39:42,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:42,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:42,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:39:42,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1760583182, now seen corresponding path program 1 times [2023-08-27 09:39:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:42,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296151901] [2023-08-27 09:39:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:39:42,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:42,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296151901] [2023-08-27 09:39:42,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296151901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:42,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:42,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:39:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973696910] [2023-08-27 09:39:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:42,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:39:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:39:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:39:42,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 408 [2023-08-27 09:39:42,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2023-08-27 09:39:42,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:42,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 408 [2023-08-27 09:39:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:45,295 INFO L124 PetriNetUnfolderBase]: 34894/49231 cut-off events. [2023-08-27 09:39:45,295 INFO L125 PetriNetUnfolderBase]: For 1930/1930 co-relation queries the response was YES. [2023-08-27 09:39:45,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98953 conditions, 49231 events. 34894/49231 cut-off events. For 1930/1930 co-relation queries the response was YES. Maximal size of possible extension queue 2328. Compared 342421 event pairs, 15318 based on Foata normal form. 1766/40401 useless extension candidates. Maximal degree in co-relation 16565. Up to 45949 conditions per place. [2023-08-27 09:39:45,498 INFO L140 encePairwiseOnDemand]: 386/408 looper letters, 93 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2023-08-27 09:39:45,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 439 flow [2023-08-27 09:39:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:39:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:39:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-27 09:39:45,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39624183006535946 [2023-08-27 09:39:45,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-27 09:39:45,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-27 09:39:45,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:45,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-27 09:39:45,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-08-27 09:39:45,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:39:45,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:39:45,504 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 227 flow. Second operand 3 states and 485 transitions. [2023-08-27 09:39:45,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 439 flow [2023-08-27 09:39:45,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 106 transitions, 431 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 09:39:45,508 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 215 flow [2023-08-27 09:39:45,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2023-08-27 09:39:45,508 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -7 predicate places. [2023-08-27 09:39:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 215 flow [2023-08-27 09:39:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2023-08-27 09:39:45,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:45,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:45,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 09:39:45,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:39:45,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1290834614, now seen corresponding path program 1 times [2023-08-27 09:39:45,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129178679] [2023-08-27 09:39:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:45,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:39:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:45,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129178679] [2023-08-27 09:39:45,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129178679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:45,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:45,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:39:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126780328] [2023-08-27 09:39:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:39:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:39:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:39:45,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 408 [2023-08-27 09:39:45,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2023-08-27 09:39:45,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:45,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 408 [2023-08-27 09:39:45,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:49,227 INFO L124 PetriNetUnfolderBase]: 47382/67454 cut-off events. [2023-08-27 09:39:49,227 INFO L125 PetriNetUnfolderBase]: For 6209/6209 co-relation queries the response was YES. [2023-08-27 09:39:49,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141247 conditions, 67454 events. 47382/67454 cut-off events. For 6209/6209 co-relation queries the response was YES. Maximal size of possible extension queue 3612. Compared 504423 event pairs, 15647 based on Foata normal form. 320/57265 useless extension candidates. Maximal degree in co-relation 104894. Up to 29455 conditions per place. [2023-08-27 09:39:49,475 INFO L140 encePairwiseOnDemand]: 396/408 looper letters, 203 selfloop transitions, 14 changer transitions 0/226 dead transitions. [2023-08-27 09:39:49,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 226 transitions, 993 flow [2023-08-27 09:39:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:39:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:39:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 941 transitions. [2023-08-27 09:39:49,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38439542483660133 [2023-08-27 09:39:49,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 941 transitions. [2023-08-27 09:39:49,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 941 transitions. [2023-08-27 09:39:49,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:49,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 941 transitions. [2023-08-27 09:39:49,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.83333333333334) internal successors, (941), 6 states have internal predecessors, (941), 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) [2023-08-27 09:39:49,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:39:49,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:39:49,482 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 215 flow. Second operand 6 states and 941 transitions. [2023-08-27 09:39:49,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 226 transitions, 993 flow [2023-08-27 09:39:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 226 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:39:49,485 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 302 flow [2023-08-27 09:39:49,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2023-08-27 09:39:49,486 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2023-08-27 09:39:49,486 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 302 flow [2023-08-27 09:39:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2023-08-27 09:39:49,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:49,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:39:49,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:39:49,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1591300532, now seen corresponding path program 1 times [2023-08-27 09:39:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:49,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534476022] [2023-08-27 09:39:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:39:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534476022] [2023-08-27 09:39:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534476022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:49,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:49,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:39:49,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620812973] [2023-08-27 09:39:49,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:49,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:39:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:39:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:39:49,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 408 [2023-08-27 09:39:49,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2023-08-27 09:39:49,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:49,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 408 [2023-08-27 09:39:49,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:39:54,593 INFO L124 PetriNetUnfolderBase]: 61037/87711 cut-off events. [2023-08-27 09:39:54,593 INFO L125 PetriNetUnfolderBase]: For 23172/23172 co-relation queries the response was YES. [2023-08-27 09:39:54,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195026 conditions, 87711 events. 61037/87711 cut-off events. For 23172/23172 co-relation queries the response was YES. Maximal size of possible extension queue 4898. Compared 693112 event pairs, 22641 based on Foata normal form. 340/76969 useless extension candidates. Maximal degree in co-relation 88905. Up to 37604 conditions per place. [2023-08-27 09:39:55,007 INFO L140 encePairwiseOnDemand]: 396/408 looper letters, 210 selfloop transitions, 19 changer transitions 0/238 dead transitions. [2023-08-27 09:39:55,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 238 transitions, 1187 flow [2023-08-27 09:39:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:39:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:39:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 940 transitions. [2023-08-27 09:39:55,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839869281045752 [2023-08-27 09:39:55,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 940 transitions. [2023-08-27 09:39:55,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 940 transitions. [2023-08-27 09:39:55,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:39:55,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 940 transitions. [2023-08-27 09:39:55,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 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) [2023-08-27 09:39:55,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:39:55,016 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:39:55,016 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 302 flow. Second operand 6 states and 940 transitions. [2023-08-27 09:39:55,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 238 transitions, 1187 flow [2023-08-27 09:39:55,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 238 transitions, 1178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:39:55,041 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 440 flow [2023-08-27 09:39:55,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2023-08-27 09:39:55,042 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-08-27 09:39:55,042 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 440 flow [2023-08-27 09:39:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.2) internal successors, (611), 5 states have internal predecessors, (611), 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) [2023-08-27 09:39:55,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:39:55,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:39:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 09:39:55,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:39:55,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:39:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -757274849, now seen corresponding path program 1 times [2023-08-27 09:39:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:39:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714934666] [2023-08-27 09:39:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:39:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:39:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:39:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:39:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:39:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714934666] [2023-08-27 09:39:55,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714934666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:39:55,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:39:55,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:39:55,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641300196] [2023-08-27 09:39:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:39:55,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:39:55,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:39:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:39:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:39:55,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 408 [2023-08-27 09:39:55,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 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) [2023-08-27 09:39:55,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:39:55,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 408 [2023-08-27 09:39:55,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:02,108 INFO L124 PetriNetUnfolderBase]: 76109/110522 cut-off events. [2023-08-27 09:40:02,108 INFO L125 PetriNetUnfolderBase]: For 51563/51581 co-relation queries the response was YES. [2023-08-27 09:40:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259297 conditions, 110522 events. 76109/110522 cut-off events. For 51563/51581 co-relation queries the response was YES. Maximal size of possible extension queue 6414. Compared 918980 event pairs, 28047 based on Foata normal form. 360/100187 useless extension candidates. Maximal degree in co-relation 126313. Up to 48224 conditions per place. [2023-08-27 09:40:02,648 INFO L140 encePairwiseOnDemand]: 397/408 looper letters, 220 selfloop transitions, 25 changer transitions 0/254 dead transitions. [2023-08-27 09:40:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 254 transitions, 1470 flow [2023-08-27 09:40:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 09:40:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 09:40:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 937 transitions. [2023-08-27 09:40:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827614379084967 [2023-08-27 09:40:02,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 937 transitions. [2023-08-27 09:40:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 937 transitions. [2023-08-27 09:40:02,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:02,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 937 transitions. [2023-08-27 09:40:02,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.16666666666666) internal successors, (937), 6 states have internal predecessors, (937), 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) [2023-08-27 09:40:02,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:40:02,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 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) [2023-08-27 09:40:02,656 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 440 flow. Second operand 6 states and 937 transitions. [2023-08-27 09:40:02,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 254 transitions, 1470 flow [2023-08-27 09:40:02,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 254 transitions, 1470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:40:02,705 INFO L231 Difference]: Finished difference. Result has 102 places, 121 transitions, 652 flow [2023-08-27 09:40:02,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=102, PETRI_TRANSITIONS=121} [2023-08-27 09:40:02,705 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 12 predicate places. [2023-08-27 09:40:02,705 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 121 transitions, 652 flow [2023-08-27 09:40:02,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 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) [2023-08-27 09:40:02,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:02,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 09:40:02,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:02,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1067396788, now seen corresponding path program 1 times [2023-08-27 09:40:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134640812] [2023-08-27 09:40:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:40:02,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:02,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134640812] [2023-08-27 09:40:02,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134640812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:02,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:02,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:40:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077100873] [2023-08-27 09:40:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:02,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:40:02,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:02,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:40:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:40:02,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 408 [2023-08-27 09:40:02,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 121 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-27 09:40:02,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:02,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 408 [2023-08-27 09:40:02,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:07,518 INFO L124 PetriNetUnfolderBase]: 42822/67746 cut-off events. [2023-08-27 09:40:07,519 INFO L125 PetriNetUnfolderBase]: For 22957/24844 co-relation queries the response was YES. [2023-08-27 09:40:07,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149505 conditions, 67746 events. 42822/67746 cut-off events. For 22957/24844 co-relation queries the response was YES. Maximal size of possible extension queue 4432. Compared 623422 event pairs, 25790 based on Foata normal form. 2510/65468 useless extension candidates. Maximal degree in co-relation 106835. Up to 39802 conditions per place. [2023-08-27 09:40:07,894 INFO L140 encePairwiseOnDemand]: 400/408 looper letters, 78 selfloop transitions, 3 changer transitions 0/150 dead transitions. [2023-08-27 09:40:07,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 150 transitions, 886 flow [2023-08-27 09:40:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:40:07,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:40:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-08-27 09:40:07,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4354575163398693 [2023-08-27 09:40:07,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-08-27 09:40:07,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-08-27 09:40:07,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:07,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-08-27 09:40:07,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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) [2023-08-27 09:40:07,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:40:07,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:40:07,899 INFO L175 Difference]: Start difference. First operand has 102 places, 121 transitions, 652 flow. Second operand 3 states and 533 transitions. [2023-08-27 09:40:07,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 150 transitions, 886 flow [2023-08-27 09:40:07,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 150 transitions, 886 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:40:07,929 INFO L231 Difference]: Finished difference. Result has 106 places, 124 transitions, 686 flow [2023-08-27 09:40:07,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=686, PETRI_PLACES=106, PETRI_TRANSITIONS=124} [2023-08-27 09:40:07,930 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 16 predicate places. [2023-08-27 09:40:07,930 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 124 transitions, 686 flow [2023-08-27 09:40:07,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-27 09:40:07,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:07,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:07,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 09:40:07,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:07,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1021677022, now seen corresponding path program 1 times [2023-08-27 09:40:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708953218] [2023-08-27 09:40:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:07,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:40:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:07,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708953218] [2023-08-27 09:40:07,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708953218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:07,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:07,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:40:07,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297299683] [2023-08-27 09:40:07,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:07,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:40:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:07,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:40:07,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:40:07,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 408 [2023-08-27 09:40:07,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 124 transitions, 686 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-27 09:40:07,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:07,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 408 [2023-08-27 09:40:07,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:09,282 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, 132#L711-1true, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 218#true, 118#thr1EXITtrue, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:09,282 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,282 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,282 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,282 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,298 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 6#L711-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 160#thr1EXITtrue, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 230#true]) [2023-08-27 09:40:09,298 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,298 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,298 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,298 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,315 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [113#L738-5true, thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 192#L711-1true, 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 46#L725-1true]) [2023-08-27 09:40:09,315 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,315 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,315 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:09,315 INFO L297 olderBase$Statistics]: existing Event has 26 ancestors and is cut-off event [2023-08-27 09:40:09,489 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#thr1EXITtrue, 218#true, 155#L725-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, 78#L712true, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:09,489 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,489 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,489 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,489 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,506 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 160#thr1EXITtrue, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 11#L712true, 206#true, 230#true]) [2023-08-27 09:40:09,507 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,507 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,507 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,507 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,530 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [113#L738-5true, thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 46#L725-1true, 93#L712true]) [2023-08-27 09:40:09,530 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,530 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,530 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is cut-off event [2023-08-27 09:40:09,530 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-08-27 09:40:09,995 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, 132#L711-1true, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#thr1EXITtrue, 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:09,996 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:09,996 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:09,996 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:09,996 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,017 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 6#L711-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 160#thr1EXITtrue, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), 206#true, 230#true]) [2023-08-27 09:40:10,017 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,018 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,018 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,018 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,040 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 192#L711-1true, 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 46#L725-1true, 206#true]) [2023-08-27 09:40:10,040 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,041 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,041 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,041 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,155 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 218#true, 118#thr1EXITtrue, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, 160#thr1EXITtrue, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:10,155 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,155 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,155 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,155 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,176 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [113#L738-5true, thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 118#thr1EXITtrue, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 155#L725-1true, Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 160#thr1EXITtrue, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 230#true]) [2023-08-27 09:40:10,176 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,176 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,176 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,176 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,209 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [113#L738-5true, thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 16#thr1EXITtrue, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 250#(= ~inc_flag~0 1), 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 46#L725-1true]) [2023-08-27 09:40:10,210 INFO L294 olderBase$Statistics]: this new event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,210 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,210 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is cut-off event [2023-08-27 09:40:10,210 INFO L297 olderBase$Statistics]: existing Event has 35 ancestors and is cut-off event [2023-08-27 09:40:10,313 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 118#thr1EXITtrue, 218#true, 155#L725-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 78#L712true, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:10,313 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-27 09:40:10,313 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-27 09:40:10,313 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,313 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,336 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 155#L725-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 160#thr1EXITtrue, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), 11#L712true, 206#true, 230#true]) [2023-08-27 09:40:10,337 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-27 09:40:10,337 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,337 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,337 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-27 09:40:10,365 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 250#(= ~inc_flag~0 1), 160#thr1EXITtrue, 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 206#true, 46#L725-1true, 93#L712true]) [2023-08-27 09:40:10,365 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-27 09:40:10,365 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,366 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-27 09:40:10,366 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-27 09:40:11,040 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, thr1Thread3of3ForFork0InUse, 218#true, 118#thr1EXITtrue, 155#L725-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 244#(= ~dec_flag~0 1), 230#true]) [2023-08-27 09:40:11,040 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,040 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,040 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,040 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,057 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1345] L725-->L725-1: Formula: (and (not (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| |v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|) (= |v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{~m~0=v_~m~0_124, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1_11|, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread3of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread3of3ForFork0_assume_abort_if_not_#in~cond#1][122], [thr1Thread1of3ForFork0InUse, thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread3of3ForFork0InUse, 118#thr1EXITtrue, 155#L725-1true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 160#thr1EXITtrue, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 244#(= ~dec_flag~0 1), 206#true, 230#true]) [2023-08-27 09:40:11,057 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,057 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,057 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,057 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,085 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1467] L725-->L725-1: Formula: (and (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11| (ite (= (mod v_~m~0_125 4294967296) 1) 1 0)) (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| |v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|) (not (= |v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11| 0)) (= v_~m~0_124 0)) InVars {~m~0=v_~m~0_125} OutVars{thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1_11|, ~m~0=v_~m~0_124, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1=|v_thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1_11|} AuxVars[] AssignedVars[~m~0, thr1Thread2of3ForFork0_assume_abort_if_not_~cond#1, thr1Thread2of3ForFork0_assume_abort_if_not_#in~cond#1][91], [thr1Thread1of3ForFork0InUse, Black: 221#(and (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), thr1Thread2of3ForFork0InUse, Black: 226#(and (<= (div ~value~0 4294967296) (div |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 4294967296)) (<= |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread2of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread2of3ForFork0_inc_~inc_v~0#1|)), 16#thr1EXITtrue, thr1Thread3of3ForFork0InUse, 233#(and (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0)), 218#true, Black: 203#(and (<= ~value~0 (* (div ~value~0 4294967296) 4294967296)) (< 0 (+ (div ~value~0 4294967296) 1))), Black: 238#(and (<= (+ |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (< 0 (+ (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296) 1)) (<= |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 0) (<= (div ~value~0 4294967296) (div |thr1Thread3of3ForFork0_inc_~inc_v~0#1| 4294967296))), 27#L738-4true, Black: 242#true, 250#(= ~inc_flag~0 1), Black: 214#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= (+ |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 1) ~value~0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|) (<= (div ~value~0 4294967296) (div |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 4294967296))), 160#thr1EXITtrue, 244#(= ~dec_flag~0 1), Black: 209#(and (<= |thr1Thread1of3ForFork0_inc_~inc_v~0#1| 0) (<= 0 |thr1Thread1of3ForFork0_inc_~inc_v~0#1|)), 46#L725-1true, 206#true]) [2023-08-27 09:40:11,085 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,085 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,085 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-27 09:40:11,085 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-27 09:40:11,823 INFO L124 PetriNetUnfolderBase]: 30457/50001 cut-off events. [2023-08-27 09:40:11,823 INFO L125 PetriNetUnfolderBase]: For 25592/25972 co-relation queries the response was YES. [2023-08-27 09:40:11,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118047 conditions, 50001 events. 30457/50001 cut-off events. For 25592/25972 co-relation queries the response was YES. Maximal size of possible extension queue 3534. Compared 477181 event pairs, 16297 based on Foata normal form. 92/46200 useless extension candidates. Maximal degree in co-relation 93551. Up to 43656 conditions per place. [2023-08-27 09:40:12,064 INFO L140 encePairwiseOnDemand]: 402/408 looper letters, 61 selfloop transitions, 3 changer transitions 3/136 dead transitions. [2023-08-27 09:40:12,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 854 flow [2023-08-27 09:40:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:40:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:40:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-08-27 09:40:12,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199346405228758 [2023-08-27 09:40:12,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-08-27 09:40:12,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-08-27 09:40:12,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:12,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-08-27 09:40:12,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 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) [2023-08-27 09:40:12,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:40:12,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 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) [2023-08-27 09:40:12,068 INFO L175 Difference]: Start difference. First operand has 106 places, 124 transitions, 686 flow. Second operand 3 states and 514 transitions. [2023-08-27 09:40:12,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 854 flow [2023-08-27 09:40:12,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 851 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:40:12,302 INFO L231 Difference]: Finished difference. Result has 105 places, 121 transitions, 686 flow [2023-08-27 09:40:12,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=686, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2023-08-27 09:40:12,302 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 15 predicate places. [2023-08-27 09:40:12,302 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 686 flow [2023-08-27 09:40:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2023-08-27 09:40:12,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:12,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:12,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 09:40:12,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:12,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:12,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1617578298, now seen corresponding path program 1 times [2023-08-27 09:40:12,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:12,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447195694] [2023-08-27 09:40:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:12,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:40:12,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:12,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447195694] [2023-08-27 09:40:12,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447195694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:12,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:12,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:40:12,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622487738] [2023-08-27 09:40:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:12,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:40:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:40:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:40:12,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:40:12,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 686 flow. Second operand has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2023-08-27 09:40:12,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:12,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:40:12,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:21,544 INFO L124 PetriNetUnfolderBase]: 86485/129469 cut-off events. [2023-08-27 09:40:21,545 INFO L125 PetriNetUnfolderBase]: For 119563/120189 co-relation queries the response was YES. [2023-08-27 09:40:21,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332479 conditions, 129469 events. 86485/129469 cut-off events. For 119563/120189 co-relation queries the response was YES. Maximal size of possible extension queue 7495. Compared 1160736 event pairs, 42897 based on Foata normal form. 884/126227 useless extension candidates. Maximal degree in co-relation 171092. Up to 97839 conditions per place. [2023-08-27 09:40:22,348 INFO L140 encePairwiseOnDemand]: 395/408 looper letters, 214 selfloop transitions, 37 changer transitions 6/269 dead transitions. [2023-08-27 09:40:22,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 269 transitions, 1826 flow [2023-08-27 09:40:22,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:40:22,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:40:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1160 transitions. [2023-08-27 09:40:22,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3553921568627451 [2023-08-27 09:40:22,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1160 transitions. [2023-08-27 09:40:22,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1160 transitions. [2023-08-27 09:40:22,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:22,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1160 transitions. [2023-08-27 09:40:22,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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) [2023-08-27 09:40:22,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 408.0) internal successors, (3672), 9 states have internal predecessors, (3672), 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) [2023-08-27 09:40:22,356 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 408.0) internal successors, (3672), 9 states have internal predecessors, (3672), 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) [2023-08-27 09:40:22,356 INFO L175 Difference]: Start difference. First operand has 105 places, 121 transitions, 686 flow. Second operand 8 states and 1160 transitions. [2023-08-27 09:40:22,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 269 transitions, 1826 flow [2023-08-27 09:40:22,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 269 transitions, 1826 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 09:40:22,562 INFO L231 Difference]: Finished difference. Result has 116 places, 144 transitions, 1068 flow [2023-08-27 09:40:22,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=116, PETRI_TRANSITIONS=144} [2023-08-27 09:40:22,563 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 26 predicate places. [2023-08-27 09:40:22,563 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 144 transitions, 1068 flow [2023-08-27 09:40:22,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2023-08-27 09:40:22,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:22,564 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:22,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 09:40:22,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:22,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 750702048, now seen corresponding path program 2 times [2023-08-27 09:40:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:22,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462206849] [2023-08-27 09:40:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:22,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:22,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 09:40:22,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462206849] [2023-08-27 09:40:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462206849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:22,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:22,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 09:40:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298507240] [2023-08-27 09:40:22,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:22,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:40:22,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:22,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:40:22,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:40:22,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:40:22,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 144 transitions, 1068 flow. Second operand has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2023-08-27 09:40:22,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:22,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:40:22,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:35,430 INFO L124 PetriNetUnfolderBase]: 108349/162271 cut-off events. [2023-08-27 09:40:35,430 INFO L125 PetriNetUnfolderBase]: For 211448/212576 co-relation queries the response was YES. [2023-08-27 09:40:35,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437680 conditions, 162271 events. 108349/162271 cut-off events. For 211448/212576 co-relation queries the response was YES. Maximal size of possible extension queue 9311. Compared 1490122 event pairs, 42225 based on Foata normal form. 1224/159008 useless extension candidates. Maximal degree in co-relation 398870. Up to 100050 conditions per place. [2023-08-27 09:40:36,296 INFO L140 encePairwiseOnDemand]: 394/408 looper letters, 236 selfloop transitions, 62 changer transitions 8/318 dead transitions. [2023-08-27 09:40:36,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 318 transitions, 2622 flow [2023-08-27 09:40:36,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 09:40:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 09:40:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1171 transitions. [2023-08-27 09:40:36,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587622549019608 [2023-08-27 09:40:36,299 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1171 transitions. [2023-08-27 09:40:36,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1171 transitions. [2023-08-27 09:40:36,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:36,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1171 transitions. [2023-08-27 09:40:36,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.375) internal successors, (1171), 8 states have internal predecessors, (1171), 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) [2023-08-27 09:40:36,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 408.0) internal successors, (3672), 9 states have internal predecessors, (3672), 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) [2023-08-27 09:40:36,304 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 408.0) internal successors, (3672), 9 states have internal predecessors, (3672), 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) [2023-08-27 09:40:36,304 INFO L175 Difference]: Start difference. First operand has 116 places, 144 transitions, 1068 flow. Second operand 8 states and 1171 transitions. [2023-08-27 09:40:36,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 318 transitions, 2622 flow [2023-08-27 09:40:37,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 318 transitions, 2589 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 09:40:37,338 INFO L231 Difference]: Finished difference. Result has 125 places, 180 transitions, 1766 flow [2023-08-27 09:40:37,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1766, PETRI_PLACES=125, PETRI_TRANSITIONS=180} [2023-08-27 09:40:37,338 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 35 predicate places. [2023-08-27 09:40:37,338 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 180 transitions, 1766 flow [2023-08-27 09:40:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 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) [2023-08-27 09:40:37,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:37,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:37,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 09:40:37,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:37,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash -385007976, now seen corresponding path program 3 times [2023-08-27 09:40:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945607464] [2023-08-27 09:40:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:40:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945607464] [2023-08-27 09:40:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945607464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:40:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28962445] [2023-08-27 09:40:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:40:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:40:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:40:37,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:40:37,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 180 transitions, 1766 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-08-27 09:40:37,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:37,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:40:37,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:40:50,676 INFO L124 PetriNetUnfolderBase]: 101496/153288 cut-off events. [2023-08-27 09:40:50,677 INFO L125 PetriNetUnfolderBase]: For 274321/275856 co-relation queries the response was YES. [2023-08-27 09:40:51,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434554 conditions, 153288 events. 101496/153288 cut-off events. For 274321/275856 co-relation queries the response was YES. Maximal size of possible extension queue 8877. Compared 1429209 event pairs, 34815 based on Foata normal form. 2566/151537 useless extension candidates. Maximal degree in co-relation 409971. Up to 69921 conditions per place. [2023-08-27 09:40:51,579 INFO L140 encePairwiseOnDemand]: 392/408 looper letters, 260 selfloop transitions, 72 changer transitions 31/375 dead transitions. [2023-08-27 09:40:51,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 375 transitions, 3274 flow [2023-08-27 09:40:51,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:40:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:40:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1336 transitions. [2023-08-27 09:40:51,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638344226579521 [2023-08-27 09:40:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1336 transitions. [2023-08-27 09:40:51,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1336 transitions. [2023-08-27 09:40:51,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:40:51,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1336 transitions. [2023-08-27 09:40:51,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.44444444444446) internal successors, (1336), 9 states have internal predecessors, (1336), 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) [2023-08-27 09:40:51,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:40:51,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:40:51,612 INFO L175 Difference]: Start difference. First operand has 125 places, 180 transitions, 1766 flow. Second operand 9 states and 1336 transitions. [2023-08-27 09:40:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 375 transitions, 3274 flow [2023-08-27 09:40:53,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 375 transitions, 3245 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 09:40:53,238 INFO L231 Difference]: Finished difference. Result has 135 places, 188 transitions, 2073 flow [2023-08-27 09:40:53,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2073, PETRI_PLACES=135, PETRI_TRANSITIONS=188} [2023-08-27 09:40:53,239 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 45 predicate places. [2023-08-27 09:40:53,239 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 188 transitions, 2073 flow [2023-08-27 09:40:53,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-08-27 09:40:53,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:40:53,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:40:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 09:40:53,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:40:53,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:40:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1020705453, now seen corresponding path program 1 times [2023-08-27 09:40:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:40:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998144634] [2023-08-27 09:40:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:40:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:40:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:40:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:40:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:40:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998144634] [2023-08-27 09:40:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998144634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:40:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:40:53,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:40:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185338061] [2023-08-27 09:40:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:40:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:40:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:40:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:40:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:40:53,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:40:53,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 188 transitions, 2073 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-08-27 09:40:53,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:40:53,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:40:53,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:06,668 INFO L124 PetriNetUnfolderBase]: 99228/150256 cut-off events. [2023-08-27 09:41:06,669 INFO L125 PetriNetUnfolderBase]: For 356683/357971 co-relation queries the response was YES. [2023-08-27 09:41:07,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445270 conditions, 150256 events. 99228/150256 cut-off events. For 356683/357971 co-relation queries the response was YES. Maximal size of possible extension queue 8814. Compared 1404721 event pairs, 34135 based on Foata normal form. 2404/148484 useless extension candidates. Maximal degree in co-relation 419818. Up to 71158 conditions per place. [2023-08-27 09:41:07,813 INFO L140 encePairwiseOnDemand]: 392/408 looper letters, 250 selfloop transitions, 69 changer transitions 41/372 dead transitions. [2023-08-27 09:41:07,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 372 transitions, 3589 flow [2023-08-27 09:41:07,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:41:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:41:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1325 transitions. [2023-08-27 09:41:07,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.360838779956427 [2023-08-27 09:41:07,817 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1325 transitions. [2023-08-27 09:41:07,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1325 transitions. [2023-08-27 09:41:07,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:07,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1325 transitions. [2023-08-27 09:41:07,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 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) [2023-08-27 09:41:07,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:07,833 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:07,833 INFO L175 Difference]: Start difference. First operand has 135 places, 188 transitions, 2073 flow. Second operand 9 states and 1325 transitions. [2023-08-27 09:41:07,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 372 transitions, 3589 flow [2023-08-27 09:41:10,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 372 transitions, 3423 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-27 09:41:10,888 INFO L231 Difference]: Finished difference. Result has 141 places, 190 transitions, 2179 flow [2023-08-27 09:41:10,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2179, PETRI_PLACES=141, PETRI_TRANSITIONS=190} [2023-08-27 09:41:10,889 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 51 predicate places. [2023-08-27 09:41:10,889 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 190 transitions, 2179 flow [2023-08-27 09:41:10,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-08-27 09:41:10,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:10,889 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:10,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 09:41:10,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:10,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:10,889 INFO L85 PathProgramCache]: Analyzing trace with hash -811348556, now seen corresponding path program 1 times [2023-08-27 09:41:10,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:10,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260502726] [2023-08-27 09:41:10,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:10,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:10,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260502726] [2023-08-27 09:41:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260502726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338161597] [2023-08-27 09:41:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:10,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:10,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:41:10,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:41:10,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 09:41:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:11,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 09:41:11,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:41:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:11,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:41:11,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:11,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338161597] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:11,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 09:41:11,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 12 [2023-08-27 09:41:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636639797] [2023-08-27 09:41:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:11,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 09:41:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 09:41:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-08-27 09:41:11,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 408 [2023-08-27 09:41:11,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 190 transitions, 2179 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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) [2023-08-27 09:41:11,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:11,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 408 [2023-08-27 09:41:11,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:17,885 INFO L124 PetriNetUnfolderBase]: 42837/72239 cut-off events. [2023-08-27 09:41:17,885 INFO L125 PetriNetUnfolderBase]: For 112410/113776 co-relation queries the response was YES. [2023-08-27 09:41:18,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167107 conditions, 72239 events. 42837/72239 cut-off events. For 112410/113776 co-relation queries the response was YES. Maximal size of possible extension queue 4965. Compared 735301 event pairs, 23009 based on Foata normal form. 5002/74474 useless extension candidates. Maximal degree in co-relation 159216. Up to 62655 conditions per place. [2023-08-27 09:41:18,298 INFO L140 encePairwiseOnDemand]: 381/408 looper letters, 42 selfloop transitions, 28 changer transitions 122/237 dead transitions. [2023-08-27 09:41:18,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 237 transitions, 2553 flow [2023-08-27 09:41:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:41:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:41:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 684 transitions. [2023-08-27 09:41:18,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2023-08-27 09:41:18,300 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 684 transitions. [2023-08-27 09:41:18,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 684 transitions. [2023-08-27 09:41:18,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:18,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 684 transitions. [2023-08-27 09:41:18,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.0) internal successors, (684), 4 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) [2023-08-27 09:41:18,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 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) [2023-08-27 09:41:18,302 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 408.0) internal successors, (2040), 5 states have internal predecessors, (2040), 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) [2023-08-27 09:41:18,302 INFO L175 Difference]: Start difference. First operand has 141 places, 190 transitions, 2179 flow. Second operand 4 states and 684 transitions. [2023-08-27 09:41:18,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 237 transitions, 2553 flow [2023-08-27 09:41:18,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 237 transitions, 2313 flow, removed 48 selfloop flow, removed 6 redundant places. [2023-08-27 09:41:18,888 INFO L231 Difference]: Finished difference. Result has 139 places, 108 transitions, 673 flow [2023-08-27 09:41:18,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=139, PETRI_TRANSITIONS=108} [2023-08-27 09:41:18,896 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 49 predicate places. [2023-08-27 09:41:18,896 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 108 transitions, 673 flow [2023-08-27 09:41:18,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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) [2023-08-27 09:41:18,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:18,901 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:18,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 09:41:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:19,105 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:19,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:19,106 INFO L85 PathProgramCache]: Analyzing trace with hash -466740119, now seen corresponding path program 1 times [2023-08-27 09:41:19,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:19,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056310810] [2023-08-27 09:41:19,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:19,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:19,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056310810] [2023-08-27 09:41:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056310810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969292302] [2023-08-27 09:41:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:19,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:19,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:41:19,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:41:19,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 09:41:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:19,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 09:41:19,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:41:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:19,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:41:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969292302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:41:19,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:41:19,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 09:41:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001677578] [2023-08-27 09:41:19,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:41:19,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 09:41:19,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 09:41:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-27 09:41:19,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 408 [2023-08-27 09:41:19,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 108 transitions, 673 flow. Second operand has 17 states, 17 states have (on average 116.17647058823529) internal successors, (1975), 17 states have internal predecessors, (1975), 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) [2023-08-27 09:41:19,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:19,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 408 [2023-08-27 09:41:19,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:24,651 INFO L124 PetriNetUnfolderBase]: 21975/36463 cut-off events. [2023-08-27 09:41:24,651 INFO L125 PetriNetUnfolderBase]: For 53198/53220 co-relation queries the response was YES. [2023-08-27 09:41:24,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111404 conditions, 36463 events. 21975/36463 cut-off events. For 53198/53220 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 329070 event pairs, 2048 based on Foata normal form. 164/36561 useless extension candidates. Maximal degree in co-relation 111368. Up to 10193 conditions per place. [2023-08-27 09:41:24,868 INFO L140 encePairwiseOnDemand]: 382/408 looper letters, 404 selfloop transitions, 67 changer transitions 431/911 dead transitions. [2023-08-27 09:41:24,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 911 transitions, 6441 flow [2023-08-27 09:41:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 09:41:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 09:41:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 6139 transitions. [2023-08-27 09:41:24,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3134701797385621 [2023-08-27 09:41:24,875 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 6139 transitions. [2023-08-27 09:41:24,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 6139 transitions. [2023-08-27 09:41:24,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:24,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 6139 transitions. [2023-08-27 09:41:24,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 127.89583333333333) internal successors, (6139), 48 states have internal predecessors, (6139), 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) [2023-08-27 09:41:24,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 408.0) internal successors, (19992), 49 states have internal predecessors, (19992), 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) [2023-08-27 09:41:24,898 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 408.0) internal successors, (19992), 49 states have internal predecessors, (19992), 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) [2023-08-27 09:41:24,898 INFO L175 Difference]: Start difference. First operand has 139 places, 108 transitions, 673 flow. Second operand 48 states and 6139 transitions. [2023-08-27 09:41:24,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 911 transitions, 6441 flow [2023-08-27 09:41:25,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 911 transitions, 6038 flow, removed 185 selfloop flow, removed 10 redundant places. [2023-08-27 09:41:25,132 INFO L231 Difference]: Finished difference. Result has 185 places, 153 transitions, 1168 flow [2023-08-27 09:41:25,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1168, PETRI_PLACES=185, PETRI_TRANSITIONS=153} [2023-08-27 09:41:25,132 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 95 predicate places. [2023-08-27 09:41:25,133 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 153 transitions, 1168 flow [2023-08-27 09:41:25,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 116.17647058823529) internal successors, (1975), 17 states have internal predecessors, (1975), 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) [2023-08-27 09:41:25,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:25,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:25,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 09:41:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:25,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:25,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1564691450, now seen corresponding path program 1 times [2023-08-27 09:41:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105745447] [2023-08-27 09:41:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105745447] [2023-08-27 09:41:25,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105745447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:25,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660712450] [2023-08-27 09:41:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:25,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:25,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:41:25,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:41:25,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 09:41:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:25,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 09:41:25,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:41:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:25,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:41:25,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660712450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:41:25,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:41:25,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 09:41:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698688828] [2023-08-27 09:41:25,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:41:25,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 09:41:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 09:41:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-27 09:41:25,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 408 [2023-08-27 09:41:25,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 153 transitions, 1168 flow. Second operand has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 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) [2023-08-27 09:41:25,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:25,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 408 [2023-08-27 09:41:25,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:31,242 INFO L124 PetriNetUnfolderBase]: 18481/31009 cut-off events. [2023-08-27 09:41:31,242 INFO L125 PetriNetUnfolderBase]: For 181376/181396 co-relation queries the response was YES. [2023-08-27 09:41:31,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132224 conditions, 31009 events. 18481/31009 cut-off events. For 181376/181396 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 276303 event pairs, 2162 based on Foata normal form. 216/31160 useless extension candidates. Maximal degree in co-relation 132170. Up to 8881 conditions per place. [2023-08-27 09:41:31,376 INFO L140 encePairwiseOnDemand]: 383/408 looper letters, 331 selfloop transitions, 65 changer transitions 513/918 dead transitions. [2023-08-27 09:41:31,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 918 transitions, 8688 flow [2023-08-27 09:41:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-27 09:41:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-27 09:41:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5714 transitions. [2023-08-27 09:41:31,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3112200435729848 [2023-08-27 09:41:31,382 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5714 transitions. [2023-08-27 09:41:31,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5714 transitions. [2023-08-27 09:41:31,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:31,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5714 transitions. [2023-08-27 09:41:31,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 126.97777777777777) internal successors, (5714), 45 states have internal predecessors, (5714), 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) [2023-08-27 09:41:31,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 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) [2023-08-27 09:41:31,396 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 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) [2023-08-27 09:41:31,396 INFO L175 Difference]: Start difference. First operand has 185 places, 153 transitions, 1168 flow. Second operand 45 states and 5714 transitions. [2023-08-27 09:41:31,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 918 transitions, 8688 flow [2023-08-27 09:41:31,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 918 transitions, 8206 flow, removed 167 selfloop flow, removed 10 redundant places. [2023-08-27 09:41:31,980 INFO L231 Difference]: Finished difference. Result has 228 places, 170 transitions, 1696 flow [2023-08-27 09:41:31,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1696, PETRI_PLACES=228, PETRI_TRANSITIONS=170} [2023-08-27 09:41:31,980 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 138 predicate places. [2023-08-27 09:41:31,980 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 170 transitions, 1696 flow [2023-08-27 09:41:31,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 116.0) internal successors, (1972), 17 states have internal predecessors, (1972), 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) [2023-08-27 09:41:31,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:31,981 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:31,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 09:41:32,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 09:41:32,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:32,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1916274216, now seen corresponding path program 1 times [2023-08-27 09:41:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:32,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110849858] [2023-08-27 09:41:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110849858] [2023-08-27 09:41:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110849858] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:32,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:41:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234326464] [2023-08-27 09:41:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:32,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:41:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:41:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:41:32,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:41:32,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 170 transitions, 1696 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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) [2023-08-27 09:41:32,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:32,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:41:32,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:35,051 INFO L124 PetriNetUnfolderBase]: 12283/21095 cut-off events. [2023-08-27 09:41:35,051 INFO L125 PetriNetUnfolderBase]: For 285300/285356 co-relation queries the response was YES. [2023-08-27 09:41:35,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106271 conditions, 21095 events. 12283/21095 cut-off events. For 285300/285356 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 182947 event pairs, 3098 based on Foata normal form. 182/21110 useless extension candidates. Maximal degree in co-relation 106202. Up to 8035 conditions per place. [2023-08-27 09:41:35,168 INFO L140 encePairwiseOnDemand]: 396/408 looper letters, 182 selfloop transitions, 19 changer transitions 116/327 dead transitions. [2023-08-27 09:41:35,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 327 transitions, 3601 flow [2023-08-27 09:41:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:41:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:41:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1230 transitions. [2023-08-27 09:41:35,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3349673202614379 [2023-08-27 09:41:35,170 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1230 transitions. [2023-08-27 09:41:35,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1230 transitions. [2023-08-27 09:41:35,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:35,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1230 transitions. [2023-08-27 09:41:35,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 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) [2023-08-27 09:41:35,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:35,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:35,173 INFO L175 Difference]: Start difference. First operand has 228 places, 170 transitions, 1696 flow. Second operand 9 states and 1230 transitions. [2023-08-27 09:41:35,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 327 transitions, 3601 flow [2023-08-27 09:41:36,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 327 transitions, 3112 flow, removed 188 selfloop flow, removed 19 redundant places. [2023-08-27 09:41:36,351 INFO L231 Difference]: Finished difference. Result has 203 places, 140 transitions, 1183 flow [2023-08-27 09:41:36,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1183, PETRI_PLACES=203, PETRI_TRANSITIONS=140} [2023-08-27 09:41:36,351 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 113 predicate places. [2023-08-27 09:41:36,351 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 140 transitions, 1183 flow [2023-08-27 09:41:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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) [2023-08-27 09:41:36,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:36,351 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:36,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 09:41:36,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:36,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1462900313, now seen corresponding path program 1 times [2023-08-27 09:41:36,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:36,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762886469] [2023-08-27 09:41:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:36,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:36,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:36,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762886469] [2023-08-27 09:41:36,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762886469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:36,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:41:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442500751] [2023-08-27 09:41:36,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:36,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 09:41:36,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:36,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 09:41:36,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 09:41:36,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 408 [2023-08-27 09:41:36,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 140 transitions, 1183 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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) [2023-08-27 09:41:36,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:36,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 408 [2023-08-27 09:41:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:38,088 INFO L124 PetriNetUnfolderBase]: 6636/11815 cut-off events. [2023-08-27 09:41:38,088 INFO L125 PetriNetUnfolderBase]: For 142377/142445 co-relation queries the response was YES. [2023-08-27 09:41:38,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58738 conditions, 11815 events. 6636/11815 cut-off events. For 142377/142445 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 99401 event pairs, 1569 based on Foata normal form. 58/11784 useless extension candidates. Maximal degree in co-relation 58679. Up to 5857 conditions per place. [2023-08-27 09:41:38,159 INFO L140 encePairwiseOnDemand]: 398/408 looper letters, 154 selfloop transitions, 19 changer transitions 83/265 dead transitions. [2023-08-27 09:41:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 265 transitions, 2662 flow [2023-08-27 09:41:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:41:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:41:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1199 transitions. [2023-08-27 09:41:38,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3265250544662309 [2023-08-27 09:41:38,161 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1199 transitions. [2023-08-27 09:41:38,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1199 transitions. [2023-08-27 09:41:38,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:38,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1199 transitions. [2023-08-27 09:41:38,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.22222222222223) internal successors, (1199), 9 states have internal predecessors, (1199), 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) [2023-08-27 09:41:38,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:38,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:38,164 INFO L175 Difference]: Start difference. First operand has 203 places, 140 transitions, 1183 flow. Second operand 9 states and 1199 transitions. [2023-08-27 09:41:38,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 265 transitions, 2662 flow [2023-08-27 09:41:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 265 transitions, 2581 flow, removed 27 selfloop flow, removed 9 redundant places. [2023-08-27 09:41:38,317 INFO L231 Difference]: Finished difference. Result has 191 places, 114 transitions, 1005 flow [2023-08-27 09:41:38,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1005, PETRI_PLACES=191, PETRI_TRANSITIONS=114} [2023-08-27 09:41:38,318 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 101 predicate places. [2023-08-27 09:41:38,318 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 114 transitions, 1005 flow [2023-08-27 09:41:38,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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) [2023-08-27 09:41:38,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:38,318 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:38,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 09:41:38,318 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:38,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:38,319 INFO L85 PathProgramCache]: Analyzing trace with hash -715658261, now seen corresponding path program 1 times [2023-08-27 09:41:38,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:38,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364782643] [2023-08-27 09:41:38,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:38,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:38,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364782643] [2023-08-27 09:41:38,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364782643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:38,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671773035] [2023-08-27 09:41:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:38,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:41:38,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:41:38,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 09:41:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:38,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 09:41:38,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:41:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:38,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:41:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 09:41:38,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671773035] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:41:38,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:41:38,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 09:41:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375633473] [2023-08-27 09:41:38,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:41:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 09:41:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 09:41:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-08-27 09:41:38,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 408 [2023-08-27 09:41:39,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 114 transitions, 1005 flow. Second operand has 23 states, 23 states have (on average 113.0) internal successors, (2599), 23 states have internal predecessors, (2599), 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) [2023-08-27 09:41:39,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:39,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 408 [2023-08-27 09:41:39,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:40,772 INFO L124 PetriNetUnfolderBase]: 3712/6924 cut-off events. [2023-08-27 09:41:40,773 INFO L125 PetriNetUnfolderBase]: For 92522/92522 co-relation queries the response was YES. [2023-08-27 09:41:40,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36599 conditions, 6924 events. 3712/6924 cut-off events. For 92522/92522 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 57497 event pairs, 532 based on Foata normal form. 22/6940 useless extension candidates. Maximal degree in co-relation 36543. Up to 2310 conditions per place. [2023-08-27 09:41:40,811 INFO L140 encePairwiseOnDemand]: 390/408 looper letters, 146 selfloop transitions, 34 changer transitions 144/333 dead transitions. [2023-08-27 09:41:40,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 333 transitions, 3557 flow [2023-08-27 09:41:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 09:41:40,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 09:41:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2864 transitions. [2023-08-27 09:41:40,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29248366013071897 [2023-08-27 09:41:40,814 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2864 transitions. [2023-08-27 09:41:40,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2864 transitions. [2023-08-27 09:41:40,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:40,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2864 transitions. [2023-08-27 09:41:40,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 119.33333333333333) internal successors, (2864), 24 states have internal predecessors, (2864), 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) [2023-08-27 09:41:40,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 408.0) internal successors, (10200), 25 states have internal predecessors, (10200), 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) [2023-08-27 09:41:40,821 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 408.0) internal successors, (10200), 25 states have internal predecessors, (10200), 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) [2023-08-27 09:41:40,821 INFO L175 Difference]: Start difference. First operand has 191 places, 114 transitions, 1005 flow. Second operand 24 states and 2864 transitions. [2023-08-27 09:41:40,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 333 transitions, 3557 flow [2023-08-27 09:41:40,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 333 transitions, 3250 flow, removed 129 selfloop flow, removed 14 redundant places. [2023-08-27 09:41:40,940 INFO L231 Difference]: Finished difference. Result has 184 places, 105 transitions, 984 flow [2023-08-27 09:41:40,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=984, PETRI_PLACES=184, PETRI_TRANSITIONS=105} [2023-08-27 09:41:40,940 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 94 predicate places. [2023-08-27 09:41:40,940 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 105 transitions, 984 flow [2023-08-27 09:41:40,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 113.0) internal successors, (2599), 23 states have internal predecessors, (2599), 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) [2023-08-27 09:41:40,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:40,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:40,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 09:41:41,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-27 09:41:41,146 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:41,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 432344930, now seen corresponding path program 1 times [2023-08-27 09:41:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:41,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598274895] [2023-08-27 09:41:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:41,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:41,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598274895] [2023-08-27 09:41:41,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598274895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:41,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:41,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:41:41,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365294975] [2023-08-27 09:41:41,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:41,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:41:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:41:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:41:41,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 408 [2023-08-27 09:41:41,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 105 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:41,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:41,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 408 [2023-08-27 09:41:41,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:42,165 INFO L124 PetriNetUnfolderBase]: 3113/5805 cut-off events. [2023-08-27 09:41:42,166 INFO L125 PetriNetUnfolderBase]: For 62260/62280 co-relation queries the response was YES. [2023-08-27 09:41:42,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29166 conditions, 5805 events. 3113/5805 cut-off events. For 62260/62280 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 46818 event pairs, 687 based on Foata normal form. 14/5801 useless extension candidates. Maximal degree in co-relation 29117. Up to 2187 conditions per place. [2023-08-27 09:41:42,191 INFO L140 encePairwiseOnDemand]: 398/408 looper letters, 98 selfloop transitions, 18 changer transitions 98/222 dead transitions. [2023-08-27 09:41:42,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 222 transitions, 2330 flow [2023-08-27 09:41:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 09:41:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 09:41:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1968 transitions. [2023-08-27 09:41:42,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3014705882352941 [2023-08-27 09:41:42,195 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1968 transitions. [2023-08-27 09:41:42,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1968 transitions. [2023-08-27 09:41:42,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:42,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1968 transitions. [2023-08-27 09:41:42,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 123.0) internal successors, (1968), 16 states have internal predecessors, (1968), 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) [2023-08-27 09:41:42,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 408.0) internal successors, (6936), 17 states have internal predecessors, (6936), 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) [2023-08-27 09:41:42,200 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 408.0) internal successors, (6936), 17 states have internal predecessors, (6936), 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) [2023-08-27 09:41:42,200 INFO L175 Difference]: Start difference. First operand has 184 places, 105 transitions, 984 flow. Second operand 16 states and 1968 transitions. [2023-08-27 09:41:42,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 222 transitions, 2330 flow [2023-08-27 09:41:42,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 222 transitions, 2196 flow, removed 31 selfloop flow, removed 19 redundant places. [2023-08-27 09:41:42,248 INFO L231 Difference]: Finished difference. Result has 169 places, 88 transitions, 768 flow [2023-08-27 09:41:42,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=768, PETRI_PLACES=169, PETRI_TRANSITIONS=88} [2023-08-27 09:41:42,249 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 79 predicate places. [2023-08-27 09:41:42,249 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 88 transitions, 768 flow [2023-08-27 09:41:42,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:42,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:42,249 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 09:41:42,249 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:42,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -369569837, now seen corresponding path program 1 times [2023-08-27 09:41:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899400546] [2023-08-27 09:41:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899400546] [2023-08-27 09:41:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899400546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:41:42,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227481809] [2023-08-27 09:41:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:42,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:41:42,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 09:41:42,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 09:41:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:42,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 09:41:42,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:41:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:42,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:41:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 09:41:42,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227481809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:41:42,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:41:42,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-08-27 09:41:42,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581974715] [2023-08-27 09:41:42,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:41:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 09:41:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 09:41:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-08-27 09:41:42,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 408 [2023-08-27 09:41:42,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 88 transitions, 768 flow. Second operand has 23 states, 23 states have (on average 112.8695652173913) internal successors, (2596), 23 states have internal predecessors, (2596), 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) [2023-08-27 09:41:42,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:42,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 408 [2023-08-27 09:41:42,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:44,092 INFO L124 PetriNetUnfolderBase]: 2400/4475 cut-off events. [2023-08-27 09:41:44,093 INFO L125 PetriNetUnfolderBase]: For 46388/46388 co-relation queries the response was YES. [2023-08-27 09:41:44,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22123 conditions, 4475 events. 2400/4475 cut-off events. For 46388/46388 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 34641 event pairs, 379 based on Foata normal form. 22/4496 useless extension candidates. Maximal degree in co-relation 22078. Up to 1387 conditions per place. [2023-08-27 09:41:44,112 INFO L140 encePairwiseOnDemand]: 390/408 looper letters, 102 selfloop transitions, 25 changer transitions 146/281 dead transitions. [2023-08-27 09:41:44,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 281 transitions, 2840 flow [2023-08-27 09:41:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 09:41:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 09:41:44,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2835 transitions. [2023-08-27 09:41:44,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28952205882352944 [2023-08-27 09:41:44,115 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2835 transitions. [2023-08-27 09:41:44,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2835 transitions. [2023-08-27 09:41:44,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:44,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2835 transitions. [2023-08-27 09:41:44,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 118.125) internal successors, (2835), 24 states have internal predecessors, (2835), 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) [2023-08-27 09:41:44,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 408.0) internal successors, (10200), 25 states have internal predecessors, (10200), 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) [2023-08-27 09:41:44,123 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 408.0) internal successors, (10200), 25 states have internal predecessors, (10200), 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) [2023-08-27 09:41:44,123 INFO L175 Difference]: Start difference. First operand has 169 places, 88 transitions, 768 flow. Second operand 24 states and 2835 transitions. [2023-08-27 09:41:44,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 281 transitions, 2840 flow [2023-08-27 09:41:44,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 281 transitions, 2542 flow, removed 125 selfloop flow, removed 16 redundant places. [2023-08-27 09:41:44,167 INFO L231 Difference]: Finished difference. Result has 150 places, 71 transitions, 638 flow [2023-08-27 09:41:44,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=638, PETRI_PLACES=150, PETRI_TRANSITIONS=71} [2023-08-27 09:41:44,167 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 60 predicate places. [2023-08-27 09:41:44,168 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 71 transitions, 638 flow [2023-08-27 09:41:44,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 112.8695652173913) internal successors, (2596), 23 states have internal predecessors, (2596), 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) [2023-08-27 09:41:44,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:44,168 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:44,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-27 09:41:44,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:41:44,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:44,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:44,373 INFO L85 PathProgramCache]: Analyzing trace with hash -369363294, now seen corresponding path program 2 times [2023-08-27 09:41:44,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:44,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351114030] [2023-08-27 09:41:44,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:44,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:44,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:44,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351114030] [2023-08-27 09:41:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351114030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:44,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:41:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506577447] [2023-08-27 09:41:44,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:41:44,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:41:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:41:44,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 408 [2023-08-27 09:41:44,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 71 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:44,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:44,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 408 [2023-08-27 09:41:44,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:44,943 INFO L124 PetriNetUnfolderBase]: 800/1747 cut-off events. [2023-08-27 09:41:44,943 INFO L125 PetriNetUnfolderBase]: For 12418/12418 co-relation queries the response was YES. [2023-08-27 09:41:44,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7970 conditions, 1747 events. 800/1747 cut-off events. For 12418/12418 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12917 event pairs, 96 based on Foata normal form. 16/1763 useless extension candidates. Maximal degree in co-relation 7931. Up to 722 conditions per place. [2023-08-27 09:41:44,949 INFO L140 encePairwiseOnDemand]: 398/408 looper letters, 40 selfloop transitions, 9 changer transitions 83/138 dead transitions. [2023-08-27 09:41:44,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 138 transitions, 1357 flow [2023-08-27 09:41:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 09:41:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 09:41:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1811 transitions. [2023-08-27 09:41:44,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29591503267973857 [2023-08-27 09:41:44,951 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1811 transitions. [2023-08-27 09:41:44,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1811 transitions. [2023-08-27 09:41:44,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:44,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1811 transitions. [2023-08-27 09:41:44,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 120.73333333333333) internal successors, (1811), 15 states have internal predecessors, (1811), 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) [2023-08-27 09:41:44,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 408.0) internal successors, (6528), 16 states have internal predecessors, (6528), 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) [2023-08-27 09:41:44,955 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 408.0) internal successors, (6528), 16 states have internal predecessors, (6528), 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) [2023-08-27 09:41:44,955 INFO L175 Difference]: Start difference. First operand has 150 places, 71 transitions, 638 flow. Second operand 15 states and 1811 transitions. [2023-08-27 09:41:44,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 138 transitions, 1357 flow [2023-08-27 09:41:44,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 138 transitions, 1224 flow, removed 35 selfloop flow, removed 22 redundant places. [2023-08-27 09:41:44,970 INFO L231 Difference]: Finished difference. Result has 129 places, 50 transitions, 370 flow [2023-08-27 09:41:44,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=370, PETRI_PLACES=129, PETRI_TRANSITIONS=50} [2023-08-27 09:41:44,971 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 39 predicate places. [2023-08-27 09:41:44,971 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 50 transitions, 370 flow [2023-08-27 09:41:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:44,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:44,971 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:44,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 09:41:44,971 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:44,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:44,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2087581022, now seen corresponding path program 3 times [2023-08-27 09:41:44,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:44,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384545857] [2023-08-27 09:41:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:45,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:45,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384545857] [2023-08-27 09:41:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384545857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:41:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065683308] [2023-08-27 09:41:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:45,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:41:45,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:45,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:41:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:41:45,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 408 [2023-08-27 09:41:45,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 50 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:45,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:45,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 408 [2023-08-27 09:41:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:45,274 INFO L124 PetriNetUnfolderBase]: 304/717 cut-off events. [2023-08-27 09:41:45,274 INFO L125 PetriNetUnfolderBase]: For 3480/3480 co-relation queries the response was YES. [2023-08-27 09:41:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2966 conditions, 717 events. 304/717 cut-off events. For 3480/3480 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4689 event pairs, 50 based on Foata normal form. 12/729 useless extension candidates. Maximal degree in co-relation 2932. Up to 371 conditions per place. [2023-08-27 09:41:45,276 INFO L140 encePairwiseOnDemand]: 400/408 looper letters, 34 selfloop transitions, 4 changer transitions 37/81 dead transitions. [2023-08-27 09:41:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 81 transitions, 697 flow [2023-08-27 09:41:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 09:41:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 09:41:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1201 transitions. [2023-08-27 09:41:45,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2943627450980392 [2023-08-27 09:41:45,277 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1201 transitions. [2023-08-27 09:41:45,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1201 transitions. [2023-08-27 09:41:45,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:45,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1201 transitions. [2023-08-27 09:41:45,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 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) [2023-08-27 09:41:45,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 408.0) internal successors, (4488), 11 states have internal predecessors, (4488), 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) [2023-08-27 09:41:45,280 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 408.0) internal successors, (4488), 11 states have internal predecessors, (4488), 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) [2023-08-27 09:41:45,280 INFO L175 Difference]: Start difference. First operand has 129 places, 50 transitions, 370 flow. Second operand 10 states and 1201 transitions. [2023-08-27 09:41:45,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 81 transitions, 697 flow [2023-08-27 09:41:45,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 81 transitions, 603 flow, removed 27 selfloop flow, removed 21 redundant places. [2023-08-27 09:41:45,284 INFO L231 Difference]: Finished difference. Result has 95 places, 41 transitions, 242 flow [2023-08-27 09:41:45,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=95, PETRI_TRANSITIONS=41} [2023-08-27 09:41:45,285 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 5 predicate places. [2023-08-27 09:41:45,285 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 41 transitions, 242 flow [2023-08-27 09:41:45,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:45,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:45,285 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:45,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 09:41:45,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT (and 4 more)] === [2023-08-27 09:41:45,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash -472423966, now seen corresponding path program 4 times [2023-08-27 09:41:45,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:45,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662155123] [2023-08-27 09:41:45,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:45,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 09:41:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:45,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662155123] [2023-08-27 09:41:45,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662155123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:45,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:45,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 09:41:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845789657] [2023-08-27 09:41:45,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 09:41:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 09:41:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 09:41:45,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 408 [2023-08-27 09:41:45,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 41 transitions, 242 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:45,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:45,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 408 [2023-08-27 09:41:45,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:41:45,566 INFO L124 PetriNetUnfolderBase]: 132/329 cut-off events. [2023-08-27 09:41:45,567 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-08-27 09:41:45,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 329 events. 132/329 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1700 event pairs, 22 based on Foata normal form. 12/341 useless extension candidates. Maximal degree in co-relation 1177. Up to 210 conditions per place. [2023-08-27 09:41:45,567 INFO L140 encePairwiseOnDemand]: 400/408 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-08-27 09:41:45,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 55 transitions, 390 flow [2023-08-27 09:41:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:41:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:41:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1068 transitions. [2023-08-27 09:41:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2908496732026144 [2023-08-27 09:41:45,569 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1068 transitions. [2023-08-27 09:41:45,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1068 transitions. [2023-08-27 09:41:45,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:41:45,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1068 transitions. [2023-08-27 09:41:45,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.66666666666667) internal successors, (1068), 9 states have internal predecessors, (1068), 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) [2023-08-27 09:41:45,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:45,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 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) [2023-08-27 09:41:45,571 INFO L175 Difference]: Start difference. First operand has 95 places, 41 transitions, 242 flow. Second operand 9 states and 1068 transitions. [2023-08-27 09:41:45,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 55 transitions, 390 flow [2023-08-27 09:41:45,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 55 transitions, 340 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-27 09:41:45,573 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2023-08-27 09:41:45,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2023-08-27 09:41:45,573 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -19 predicate places. [2023-08-27 09:41:45,573 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2023-08-27 09:41:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 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) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (7 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (6 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (5 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (4 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (3 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (2 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (1 of 8 remaining) [2023-08-27 09:41:45,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONASSERT (0 of 8 remaining) [2023-08-27 09:41:45,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 09:41:45,574 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:45,575 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 09:41:45,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,589 INFO L124 PetriNetUnfolderBase]: 25/247 cut-off events. [2023-08-27 09:41:45,589 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 09:41:45,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 25/247 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 896 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-08-27 09:41:45,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,591 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:41:45,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,591 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 213 transitions, 447 flow [2023-08-27 09:41:45,605 INFO L124 PetriNetUnfolderBase]: 25/247 cut-off events. [2023-08-27 09:41:45,605 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 09:41:45,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 25/247 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 896 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 195. Up to 8 conditions per place. [2023-08-27 09:41:45,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 27450 [2023-08-27 09:41:48,361 INFO L134 LiptonReduction]: Checked pairs total: 103789 [2023-08-27 09:41:48,361 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-08-27 09:41:48,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 09:41:48,362 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:41:48,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 09:41:48,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:41:48,366 INFO L124 PetriNetUnfolderBase]: 14/90 cut-off events. [2023-08-27 09:41:48,366 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 09:41:48,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:48,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 09:41:48,367 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 09:41:48,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash -366023581, now seen corresponding path program 1 times [2023-08-27 09:41:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336787128] [2023-08-27 09:41:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:41:48,372 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 09:41:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 09:41:48,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 09:41:48,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 09:41:48,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 09:41:48,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 09:41:48,389 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 09:41:48,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 09:41:48,389 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 09:41:48,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 09:41:48,408 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 09:41:48,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,432 INFO L124 PetriNetUnfolderBase]: 33/321 cut-off events. [2023-08-27 09:41:48,432 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 09:41:48,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 321 events. 33/321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1276 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2023-08-27 09:41:48,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:41:48,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 275 transitions, 582 flow [2023-08-27 09:41:48,459 INFO L124 PetriNetUnfolderBase]: 33/321 cut-off events. [2023-08-27 09:41:48,459 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 09:41:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 321 events. 33/321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1276 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 256. Up to 10 conditions per place. [2023-08-27 09:41:48,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 51728 [2023-08-27 09:41:51,583 INFO L134 LiptonReduction]: Checked pairs total: 202903 [2023-08-27 09:41:51,583 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-27 09:41:51,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:41:51,589 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;@2e77497e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:41:51,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-27 09:41:51,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:41:51,592 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2023-08-27 09:41:51,592 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 09:41:51,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:41:51,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:41:51,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err1ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 09:41:51,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:41:51,593 INFO L85 PathProgramCache]: Analyzing trace with hash 880494969, now seen corresponding path program 1 times [2023-08-27 09:41:51,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:41:51,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699222452] [2023-08-27 09:41:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:41:51,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:41:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:41:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 09:41:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:41:51,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699222452] [2023-08-27 09:41:51,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699222452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:41:51,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:41:51,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:41:51,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307113374] [2023-08-27 09:41:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:41:51,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 09:41:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:41:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 09:41:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 09:41:51,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 533 [2023-08-27 09:41:51,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 136 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 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) [2023-08-27 09:41:51,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:41:51,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 533 [2023-08-27 09:41:51,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand