/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:46:39,968 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:46:40,035 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 05:46:40,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:46:40,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:46:40,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:46:40,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:46:40,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:46:40,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:46:40,075 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:46:40,075 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:46:40,076 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:46:40,076 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:46:40,077 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:46:40,077 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:46:40,077 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:46:40,077 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:46:40,077 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:46:40,078 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:46:40,078 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:46:40,078 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:46:40,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:46:40,079 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:46:40,079 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:46:40,079 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:46:40,079 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:46:40,080 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:46:40,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:46:40,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:46:40,080 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:46:40,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:46:40,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:46:40,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:46:40,081 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:46:40,081 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:46:40,082 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:46:40,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:46:40,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:46:40,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:46:40,359 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:46:40,359 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:46:40,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-08-27 05:46:41,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:46:41,553 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:46:41,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-08-27 05:46:41,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3bfd1b9/a12f168a0171443bb9f977c7b046b29f/FLAG21e61f504 [2023-08-27 05:46:41,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3bfd1b9/a12f168a0171443bb9f977c7b046b29f [2023-08-27 05:46:41,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:46:41,579 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:46:41,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:46:41,580 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:46:41,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:46:41,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:41,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb543ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41, skipping insertion in model container [2023-08-27 05:46:41,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:41,612 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:46:41,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:46:41,881 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:46:41,906 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 05:46:41,907 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 05:46:41,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:46:41,955 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:46:41,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41 WrapperNode [2023-08-27 05:46:41,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:46:41,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:46:41,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:46:41,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:46:41,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:41,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:41,998 INFO L138 Inliner]: procedures = 165, calls = 46, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 147 [2023-08-27 05:46:41,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:46:41,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:46:41,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:46:41,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:46:42,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:46:42,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:46:42,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:46:42,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:46:42,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (1/1) ... [2023-08-27 05:46:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:46:42,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:46:42,086 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 05:46:42,099 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 05:46:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:46:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-27 05:46:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:46:42,119 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:46:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:46:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:46:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:46:42,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:46:42,122 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 05:46:42,227 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:46:42,229 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:46:42,405 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:46:42,411 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:46:42,412 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 05:46:42,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:46:42 BoogieIcfgContainer [2023-08-27 05:46:42,413 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:46:42,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:46:42,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:46:42,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:46:42,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:46:41" (1/3) ... [2023-08-27 05:46:42,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bbef6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:46:42, skipping insertion in model container [2023-08-27 05:46:42,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:46:41" (2/3) ... [2023-08-27 05:46:42,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70bbef6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:46:42, skipping insertion in model container [2023-08-27 05:46:42,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:46:42" (3/3) ... [2023-08-27 05:46:42,419 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-08-27 05:46:42,431 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:46:42,431 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 05:46:42,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:46:42,484 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 05:46:42,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 182 transitions, 379 flow [2023-08-27 05:46:42,606 INFO L124 PetriNetUnfolderBase]: 9/179 cut-off events. [2023-08-27 05:46:42,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:42,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 179 events. 9/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 359 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-27 05:46:42,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 182 transitions, 379 flow [2023-08-27 05:46:42,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 179 transitions, 367 flow [2023-08-27 05:46:42,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:46:42,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 179 transitions, 367 flow [2023-08-27 05:46:42,632 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 179 transitions, 367 flow [2023-08-27 05:46:42,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 179 transitions, 367 flow [2023-08-27 05:46:42,671 INFO L124 PetriNetUnfolderBase]: 9/179 cut-off events. [2023-08-27 05:46:42,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:42,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 179 events. 9/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 359 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-27 05:46:42,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 12846 [2023-08-27 05:46:47,208 INFO L134 LiptonReduction]: Checked pairs total: 26919 [2023-08-27 05:46:47,208 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-08-27 05:46:47,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 05:46:47,224 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;@7ec43ca9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:46:47,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 05:46:47,227 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:46:47,228 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 05:46:47,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:46:47,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:47,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 05:46:47,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:47,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash 674552611, now seen corresponding path program 1 times [2023-08-27 05:46:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:47,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684366521] [2023-08-27 05:46:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:47,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:47,429 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 05:46:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684366521] [2023-08-27 05:46:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684366521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:47,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 05:46:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266392124] [2023-08-27 05:46:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:47,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:47,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:47,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 376 [2023-08-27 05:46:47,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 05:46:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 376 [2023-08-27 05:46:47,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:47,809 INFO L124 PetriNetUnfolderBase]: 2472/4183 cut-off events. [2023-08-27 05:46:47,810 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 05:46:47,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7783 conditions, 4183 events. 2472/4183 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30750 event pairs, 204 based on Foata normal form. 0/3037 useless extension candidates. Maximal degree in co-relation 7772. Up to 3168 conditions per place. [2023-08-27 05:46:47,828 INFO L140 encePairwiseOnDemand]: 373/376 looper letters, 41 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-27 05:46:47,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 54 transitions, 209 flow [2023-08-27 05:46:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-08-27 05:46:47,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45656028368794327 [2023-08-27 05:46:47,838 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-08-27 05:46:47,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-08-27 05:46:47,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:47,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-08-27 05:46:47,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states 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 05:46:47,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:47,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:47,848 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 85 flow. Second operand 3 states and 515 transitions. [2023-08-27 05:46:47,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 54 transitions, 209 flow [2023-08-27 05:46:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 05:46:47,851 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 84 flow [2023-08-27 05:46:47,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-27 05:46:47,855 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-08-27 05:46:47,855 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 84 flow [2023-08-27 05:46:47,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 05:46:47,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 05:46:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:46:47,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:47,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 674552612, now seen corresponding path program 1 times [2023-08-27 05:46:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21488261] [2023-08-27 05:46:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:47,894 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 05:46:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21488261] [2023-08-27 05:46:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21488261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:47,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 05:46:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715190512] [2023-08-27 05:46:47,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:47,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:47,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:47,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:47,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:47,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 376 [2023-08-27 05:46:47,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 05:46:47,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:47,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 376 [2023-08-27 05:46:47,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:48,211 INFO L124 PetriNetUnfolderBase]: 2322/4093 cut-off events. [2023-08-27 05:46:48,211 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 05:46:48,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7841 conditions, 4093 events. 2322/4093 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29968 event pairs, 557 based on Foata normal form. 0/3129 useless extension candidates. Maximal degree in co-relation 7832. Up to 2515 conditions per place. [2023-08-27 05:46:48,231 INFO L140 encePairwiseOnDemand]: 374/376 looper letters, 41 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-08-27 05:46:48,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 204 flow [2023-08-27 05:46:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2023-08-27 05:46:48,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45567375886524825 [2023-08-27 05:46:48,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2023-08-27 05:46:48,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2023-08-27 05:46:48,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:48,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2023-08-27 05:46:48,236 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 05:46:48,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:48,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:48,240 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 84 flow. Second operand 3 states and 514 transitions. [2023-08-27 05:46:48,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 204 flow [2023-08-27 05:46:48,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:48,242 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 82 flow [2023-08-27 05:46:48,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-27 05:46:48,242 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-08-27 05:46:48,242 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 82 flow [2023-08-27 05:46:48,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 05:46:48,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:48,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:46:48,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:48,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1566258915, now seen corresponding path program 1 times [2023-08-27 05:46:48,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:48,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824769368] [2023-08-27 05:46:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:48,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:48,365 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 05:46:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:48,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824769368] [2023-08-27 05:46:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824769368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:48,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:48,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307503293] [2023-08-27 05:46:48,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:48,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:48,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:48,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:48,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 376 [2023-08-27 05:46:48,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 05:46:48,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:48,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 376 [2023-08-27 05:46:48,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:49,098 INFO L124 PetriNetUnfolderBase]: 7003/10572 cut-off events. [2023-08-27 05:46:49,098 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2023-08-27 05:46:49,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21605 conditions, 10572 events. 7003/10572 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 65884 event pairs, 1327 based on Foata normal form. 0/9140 useless extension candidates. Maximal degree in co-relation 21596. Up to 4467 conditions per place. [2023-08-27 05:46:49,141 INFO L140 encePairwiseOnDemand]: 369/376 looper letters, 137 selfloop transitions, 10 changer transitions 0/152 dead transitions. [2023-08-27 05:46:49,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 152 transitions, 630 flow [2023-08-27 05:46:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 05:46:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 05:46:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1374 transitions. [2023-08-27 05:46:49,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456781914893617 [2023-08-27 05:46:49,144 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1374 transitions. [2023-08-27 05:46:49,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1374 transitions. [2023-08-27 05:46:49,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:49,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1374 transitions. [2023-08-27 05:46:49,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.75) internal successors, (1374), 8 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states 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 05:46:49,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:49,221 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:49,221 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 82 flow. Second operand 8 states and 1374 transitions. [2023-08-27 05:46:49,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 152 transitions, 630 flow [2023-08-27 05:46:49,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 152 transitions, 627 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:49,223 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 150 flow [2023-08-27 05:46:49,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-27 05:46:49,224 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 10 predicate places. [2023-08-27 05:46:49,224 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 150 flow [2023-08-27 05:46:49,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states 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 05:46:49,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:49,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:46:49,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:49,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1344493819, now seen corresponding path program 1 times [2023-08-27 05:46:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809727215] [2023-08-27 05:46:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:49,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:49,307 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 05:46:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809727215] [2023-08-27 05:46:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809727215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:49,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:49,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925313855] [2023-08-27 05:46:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:49,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 376 [2023-08-27 05:46:49,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 05:46:49,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:49,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 376 [2023-08-27 05:46:49,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:50,166 INFO L124 PetriNetUnfolderBase]: 8262/12287 cut-off events. [2023-08-27 05:46:50,166 INFO L125 PetriNetUnfolderBase]: For 6741/6741 co-relation queries the response was YES. [2023-08-27 05:46:50,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30865 conditions, 12287 events. 8262/12287 cut-off events. For 6741/6741 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 76121 event pairs, 2206 based on Foata normal form. 0/11052 useless extension candidates. Maximal degree in co-relation 30849. Up to 5914 conditions per place. [2023-08-27 05:46:50,245 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 124 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2023-08-27 05:46:50,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 149 transitions, 794 flow [2023-08-27 05:46:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 05:46:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 05:46:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1336 transitions. [2023-08-27 05:46:50,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4441489361702128 [2023-08-27 05:46:50,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1336 transitions. [2023-08-27 05:46:50,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1336 transitions. [2023-08-27 05:46:50,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:50,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1336 transitions. [2023-08-27 05:46:50,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.0) internal successors, (1336), 8 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 05:46:50,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:50,330 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:50,330 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 150 flow. Second operand 8 states and 1336 transitions. [2023-08-27 05:46:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 149 transitions, 794 flow [2023-08-27 05:46:50,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 149 transitions, 794 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 05:46:50,378 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 333 flow [2023-08-27 05:46:50,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-27 05:46:50,379 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-08-27 05:46:50,379 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 333 flow [2023-08-27 05:46:50,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 05:46:50,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:50,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:50,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:46:50,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:50,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1052198199, now seen corresponding path program 1 times [2023-08-27 05:46:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571375194] [2023-08-27 05:46:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:50,425 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 05:46:50,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:50,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571375194] [2023-08-27 05:46:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571375194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448176612] [2023-08-27 05:46:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:50,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:46:50,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:46:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:46:50,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 376 [2023-08-27 05:46:50,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 05:46:50,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:50,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 376 [2023-08-27 05:46:50,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:50,894 INFO L124 PetriNetUnfolderBase]: 3019/5797 cut-off events. [2023-08-27 05:46:50,895 INFO L125 PetriNetUnfolderBase]: For 7368/7555 co-relation queries the response was YES. [2023-08-27 05:46:50,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16331 conditions, 5797 events. 3019/5797 cut-off events. For 7368/7555 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 43974 event pairs, 1420 based on Foata normal form. 697/6038 useless extension candidates. Maximal degree in co-relation 16307. Up to 3436 conditions per place. [2023-08-27 05:46:50,920 INFO L140 encePairwiseOnDemand]: 360/376 looper letters, 61 selfloop transitions, 18 changer transitions 0/91 dead transitions. [2023-08-27 05:46:50,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 655 flow [2023-08-27 05:46:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:46:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:46:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-27 05:46:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4370567375886525 [2023-08-27 05:46:50,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-27 05:46:50,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-27 05:46:50,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:50,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-27 05:46:50,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states 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 05:46:50,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:50,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 376.0) internal successors, (1504), 4 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states 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 05:46:50,925 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 333 flow. Second operand 3 states and 493 transitions. [2023-08-27 05:46:50,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 655 flow [2023-08-27 05:46:50,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 651 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-27 05:46:50,966 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 441 flow [2023-08-27 05:46:50,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-08-27 05:46:50,967 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-08-27 05:46:50,967 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 441 flow [2023-08-27 05:46:50,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 05:46:50,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:50,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:46:50,968 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t3_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:50,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1534978094, now seen corresponding path program 1 times [2023-08-27 05:46:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692009354] [2023-08-27 05:46:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:51,049 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 05:46:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692009354] [2023-08-27 05:46:51,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692009354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:51,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:51,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:51,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060054480] [2023-08-27 05:46:51,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:51,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:51,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 376 [2023-08-27 05:46:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 441 flow. Second operand has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 05:46:51,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:51,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 376 [2023-08-27 05:46:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:51,822 INFO L124 PetriNetUnfolderBase]: 4690/8053 cut-off events. [2023-08-27 05:46:51,822 INFO L125 PetriNetUnfolderBase]: For 11876/11912 co-relation queries the response was YES. [2023-08-27 05:46:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29739 conditions, 8053 events. 4690/8053 cut-off events. For 11876/11912 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 52844 event pairs, 1532 based on Foata normal form. 21/7627 useless extension candidates. Maximal degree in co-relation 29713. Up to 4013 conditions per place. [2023-08-27 05:46:51,857 INFO L140 encePairwiseOnDemand]: 369/376 looper letters, 136 selfloop transitions, 29 changer transitions 6/179 dead transitions. [2023-08-27 05:46:51,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 179 transitions, 1454 flow [2023-08-27 05:46:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 05:46:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 05:46:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1332 transitions. [2023-08-27 05:46:51,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428191489361702 [2023-08-27 05:46:51,860 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1332 transitions. [2023-08-27 05:46:51,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1332 transitions. [2023-08-27 05:46:51,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:51,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1332 transitions. [2023-08-27 05:46:51,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.5) internal successors, (1332), 8 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 05:46:51,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:51,865 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states 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 05:46:51,865 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 441 flow. Second operand 8 states and 1332 transitions. [2023-08-27 05:46:51,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 179 transitions, 1454 flow [2023-08-27 05:46:51,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 179 transitions, 1400 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 05:46:51,916 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 702 flow [2023-08-27 05:46:51,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=702, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2023-08-27 05:46:51,917 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-08-27 05:46:51,917 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 702 flow [2023-08-27 05:46:51,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 05:46:51,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:51,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:51,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:46:51,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:51,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1155065320, now seen corresponding path program 1 times [2023-08-27 05:46:51,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:51,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809942540] [2023-08-27 05:46:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:51,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:51,973 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 05:46:51,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:51,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809942540] [2023-08-27 05:46:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809942540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:51,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:51,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 05:46:51,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021343459] [2023-08-27 05:46:51,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 05:46:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 05:46:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 05:46:51,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-27 05:46:51,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 702 flow. Second operand has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 05:46:51,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:51,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-27 05:46:51,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:52,784 INFO L124 PetriNetUnfolderBase]: 5219/9070 cut-off events. [2023-08-27 05:46:52,785 INFO L125 PetriNetUnfolderBase]: For 21268/21325 co-relation queries the response was YES. [2023-08-27 05:46:52,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33304 conditions, 9070 events. 5219/9070 cut-off events. For 21268/21325 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 63189 event pairs, 1366 based on Foata normal form. 252/9130 useless extension candidates. Maximal degree in co-relation 33271. Up to 4671 conditions per place. [2023-08-27 05:46:52,825 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 183 selfloop transitions, 33 changer transitions 0/224 dead transitions. [2023-08-27 05:46:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 224 transitions, 1900 flow [2023-08-27 05:46:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 05:46:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 05:46:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1151 transitions. [2023-08-27 05:46:52,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373100303951368 [2023-08-27 05:46:52,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1151 transitions. [2023-08-27 05:46:52,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1151 transitions. [2023-08-27 05:46:52,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:52,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1151 transitions. [2023-08-27 05:46:52,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.42857142857142) internal successors, (1151), 7 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states 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 05:46:52,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 05:46:52,833 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 05:46:52,833 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 702 flow. Second operand 7 states and 1151 transitions. [2023-08-27 05:46:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 224 transitions, 1900 flow [2023-08-27 05:46:52,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 224 transitions, 1894 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-27 05:46:52,910 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 808 flow [2023-08-27 05:46:52,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=808, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2023-08-27 05:46:52,910 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-08-27 05:46:52,910 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 808 flow [2023-08-27 05:46:52,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 05:46:52,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:52,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:46:52,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:52,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 631251590, now seen corresponding path program 1 times [2023-08-27 05:46:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:52,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667226138] [2023-08-27 05:46:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,070 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 05:46:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667226138] [2023-08-27 05:46:53,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667226138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 05:46:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100816222] [2023-08-27 05:46:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:53,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 376 [2023-08-27 05:46:53,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 05:46:53,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 376 [2023-08-27 05:46:53,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:53,279 INFO L124 PetriNetUnfolderBase]: 965/2318 cut-off events. [2023-08-27 05:46:53,279 INFO L125 PetriNetUnfolderBase]: For 7258/7527 co-relation queries the response was YES. [2023-08-27 05:46:53,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9108 conditions, 2318 events. 965/2318 cut-off events. For 7258/7527 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17011 event pairs, 166 based on Foata normal form. 356/2592 useless extension candidates. Maximal degree in co-relation 9070. Up to 1338 conditions per place. [2023-08-27 05:46:53,289 INFO L140 encePairwiseOnDemand]: 367/376 looper letters, 73 selfloop transitions, 15 changer transitions 2/106 dead transitions. [2023-08-27 05:46:53,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 106 transitions, 1047 flow [2023-08-27 05:46:53,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 05:46:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 05:46:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 601 transitions. [2023-08-27 05:46:53,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996010638297872 [2023-08-27 05:46:53,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 601 transitions. [2023-08-27 05:46:53,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 601 transitions. [2023-08-27 05:46:53,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:53,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 601 transitions. [2023-08-27 05:46:53,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states 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 05:46:53,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 05:46:53,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 05:46:53,295 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 808 flow. Second operand 4 states and 601 transitions. [2023-08-27 05:46:53,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 106 transitions, 1047 flow [2023-08-27 05:46:53,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 984 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-27 05:46:53,315 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 704 flow [2023-08-27 05:46:53,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=704, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-08-27 05:46:53,317 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-08-27 05:46:53,317 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 704 flow [2023-08-27 05:46:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 05:46:53,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:53,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:53,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:46:53,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:53,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash -755247868, now seen corresponding path program 1 times [2023-08-27 05:46:53,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:53,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753751829] [2023-08-27 05:46:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:53,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:53,404 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 05:46:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753751829] [2023-08-27 05:46:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753751829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:53,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:53,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 05:46:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639794590] [2023-08-27 05:46:53,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:53,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 05:46:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 05:46:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 05:46:53,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-27 05:46:53,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 704 flow. Second operand has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:46:53,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:53,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-27 05:46:53,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:53,875 INFO L124 PetriNetUnfolderBase]: 1532/3257 cut-off events. [2023-08-27 05:46:53,876 INFO L125 PetriNetUnfolderBase]: For 9545/9602 co-relation queries the response was YES. [2023-08-27 05:46:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13078 conditions, 3257 events. 1532/3257 cut-off events. For 9545/9602 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23041 event pairs, 287 based on Foata normal form. 180/3424 useless extension candidates. Maximal degree in co-relation 13041. Up to 1416 conditions per place. [2023-08-27 05:46:53,890 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 194 selfloop transitions, 39 changer transitions 8/249 dead transitions. [2023-08-27 05:46:53,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 249 transitions, 2140 flow [2023-08-27 05:46:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 05:46:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 05:46:53,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2064 transitions. [2023-08-27 05:46:53,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42225859247135844 [2023-08-27 05:46:53,893 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2064 transitions. [2023-08-27 05:46:53,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2064 transitions. [2023-08-27 05:46:53,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:53,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2064 transitions. [2023-08-27 05:46:53,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 158.76923076923077) internal successors, (2064), 13 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 05:46:53,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states 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 05:46:53,902 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states 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 05:46:53,902 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 704 flow. Second operand 13 states and 2064 transitions. [2023-08-27 05:46:53,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 249 transitions, 2140 flow [2023-08-27 05:46:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 249 transitions, 2075 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 05:46:53,929 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 874 flow [2023-08-27 05:46:53,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2023-08-27 05:46:53,929 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 60 predicate places. [2023-08-27 05:46:53,930 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 874 flow [2023-08-27 05:46:53,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:46:53,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:53,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:46:53,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:53,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1457929832, now seen corresponding path program 1 times [2023-08-27 05:46:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245873372] [2023-08-27 05:46:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,011 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 05:46:54,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245873372] [2023-08-27 05:46:54,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245873372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 05:46:54,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931118426] [2023-08-27 05:46:54,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 05:46:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 05:46:54,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 05:46:54,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 376 [2023-08-27 05:46:54,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states 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 05:46:54,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 376 [2023-08-27 05:46:54,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,498 INFO L124 PetriNetUnfolderBase]: 1476/3242 cut-off events. [2023-08-27 05:46:54,498 INFO L125 PetriNetUnfolderBase]: For 11915/11967 co-relation queries the response was YES. [2023-08-27 05:46:54,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13956 conditions, 3242 events. 1476/3242 cut-off events. For 11915/11967 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 23171 event pairs, 360 based on Foata normal form. 160/3388 useless extension candidates. Maximal degree in co-relation 13914. Up to 1397 conditions per place. [2023-08-27 05:46:54,512 INFO L140 encePairwiseOnDemand]: 367/376 looper letters, 177 selfloop transitions, 32 changer transitions 29/246 dead transitions. [2023-08-27 05:46:54,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 246 transitions, 2472 flow [2023-08-27 05:46:54,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 05:46:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 05:46:54,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2012 transitions. [2023-08-27 05:46:54,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.411620294599018 [2023-08-27 05:46:54,516 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2012 transitions. [2023-08-27 05:46:54,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2012 transitions. [2023-08-27 05:46:54,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2012 transitions. [2023-08-27 05:46:54,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 154.76923076923077) internal successors, (2012), 13 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 05:46:54,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states 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 05:46:54,524 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states 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 05:46:54,524 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 874 flow. Second operand 13 states and 2012 transitions. [2023-08-27 05:46:54,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 246 transitions, 2472 flow [2023-08-27 05:46:54,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 246 transitions, 2306 flow, removed 38 selfloop flow, removed 10 redundant places. [2023-08-27 05:46:54,554 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 887 flow [2023-08-27 05:46:54,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=887, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2023-08-27 05:46:54,554 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 65 predicate places. [2023-08-27 05:46:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 887 flow [2023-08-27 05:46:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.5) internal successors, (879), 6 states have internal predecessors, (879), 0 states have call successors, (0), 0 states 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 05:46:54,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:46:54,555 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:54,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash -123614150, now seen corresponding path program 1 times [2023-08-27 05:46:54,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821519685] [2023-08-27 05:46:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,640 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 05:46:54,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821519685] [2023-08-27 05:46:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821519685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 05:46:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192138231] [2023-08-27 05:46:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 05:46:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 05:46:54,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 05:46:54,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 376 [2023-08-27 05:46:54,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 887 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 05:46:54,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 376 [2023-08-27 05:46:54,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,738 INFO L124 PetriNetUnfolderBase]: 189/830 cut-off events. [2023-08-27 05:46:54,738 INFO L125 PetriNetUnfolderBase]: For 1677/1723 co-relation queries the response was YES. [2023-08-27 05:46:54,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 830 events. 189/830 cut-off events. For 1677/1723 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5740 event pairs, 75 based on Foata normal form. 45/871 useless extension candidates. Maximal degree in co-relation 3089. Up to 357 conditions per place. [2023-08-27 05:46:54,741 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 32 selfloop transitions, 14 changer transitions 14/72 dead transitions. [2023-08-27 05:46:54,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 72 transitions, 671 flow [2023-08-27 05:46:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 05:46:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 05:46:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 595 transitions. [2023-08-27 05:46:54,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39561170212765956 [2023-08-27 05:46:54,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 595 transitions. [2023-08-27 05:46:54,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 595 transitions. [2023-08-27 05:46:54,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 595 transitions. [2023-08-27 05:46:54,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states 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 05:46:54,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 05:46:54,745 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 05:46:54,746 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 887 flow. Second operand 4 states and 595 transitions. [2023-08-27 05:46:54,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 72 transitions, 671 flow [2023-08-27 05:46:54,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 72 transitions, 562 flow, removed 15 selfloop flow, removed 19 redundant places. [2023-08-27 05:46:54,751 INFO L231 Difference]: Finished difference. Result has 89 places, 52 transitions, 337 flow [2023-08-27 05:46:54,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=89, PETRI_TRANSITIONS=52} [2023-08-27 05:46:54,751 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-08-27 05:46:54,751 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 52 transitions, 337 flow [2023-08-27 05:46:54,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 05:46:54,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:46:54,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:46:54,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t3_funErr0ASSERT_VIOLATIONASSERT === [t2_funErr0ASSERT_VIOLATIONASSERT, t3_funErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-27 05:46:54,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:46:54,752 INFO L85 PathProgramCache]: Analyzing trace with hash 614097941, now seen corresponding path program 1 times [2023-08-27 05:46:54,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:46:54,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167402572] [2023-08-27 05:46:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:46:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:46:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:46:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 05:46:54,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:46:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167402572] [2023-08-27 05:46:54,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167402572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:46:54,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:46:54,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 05:46:54,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759636007] [2023-08-27 05:46:54,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:46:54,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 05:46:54,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 05:46:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 05:46:54,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-27 05:46:54,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 52 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 148.66666666666666) internal successors, (892), 6 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 05:46:54,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:54,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-27 05:46:54,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:54,991 INFO L124 PetriNetUnfolderBase]: 193/612 cut-off events. [2023-08-27 05:46:54,992 INFO L125 PetriNetUnfolderBase]: For 820/820 co-relation queries the response was YES. [2023-08-27 05:46:54,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 612 events. 193/612 cut-off events. For 820/820 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3235 event pairs, 122 based on Foata normal form. 33/644 useless extension candidates. Maximal degree in co-relation 2180. Up to 303 conditions per place. [2023-08-27 05:46:54,993 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-08-27 05:46:54,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 74 transitions, 576 flow [2023-08-27 05:46:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 05:46:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 05:46:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1080 transitions. [2023-08-27 05:46:54,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41033434650455924 [2023-08-27 05:46:54,995 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1080 transitions. [2023-08-27 05:46:54,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1080 transitions. [2023-08-27 05:46:54,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:46:54,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1080 transitions. [2023-08-27 05:46:54,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 05:46:55,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 05:46:55,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 05:46:55,000 INFO L175 Difference]: Start difference. First operand has 89 places, 52 transitions, 337 flow. Second operand 7 states and 1080 transitions. [2023-08-27 05:46:55,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 74 transitions, 576 flow [2023-08-27 05:46:55,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 510 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-27 05:46:55,002 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2023-08-27 05:46:55,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2023-08-27 05:46:55,003 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2023-08-27 05:46:55,003 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2023-08-27 05:46:55,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.66666666666666) internal successors, (892), 6 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 05:46:55,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 05:46:55,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONASSERT (11 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (9 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 05:46:55,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 05:46:55,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:46:55,007 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:46:55,010 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 05:46:55,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 05:46:55,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:46:55 BasicIcfg [2023-08-27 05:46:55,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 05:46:55,012 INFO L158 Benchmark]: Toolchain (without parser) took 13432.45ms. Allocated memory was 396.4MB in the beginning and 1.1GB in the end (delta: 679.5MB). Free memory was 371.1MB in the beginning and 907.3MB in the end (delta: -536.2MB). Peak memory consumption was 145.5MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,012 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 396.4MB. Free memory is still 373.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:46:55,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.52ms. Allocated memory is still 396.4MB. Free memory was 370.5MB in the beginning and 350.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.35ms. Allocated memory is still 396.4MB. Free memory was 350.7MB in the beginning and 348.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,012 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 396.4MB. Free memory was 348.6MB in the beginning and 346.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,013 INFO L158 Benchmark]: RCFGBuilder took 385.62ms. Allocated memory is still 396.4MB. Free memory was 346.5MB in the beginning and 328.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,013 INFO L158 Benchmark]: TraceAbstraction took 12596.59ms. Allocated memory was 396.4MB in the beginning and 1.1GB in the end (delta: 679.5MB). Free memory was 328.2MB in the beginning and 907.3MB in the end (delta: -579.1MB). Peak memory consumption was 103.5MB. Max. memory is 16.0GB. [2023-08-27 05:46:55,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 396.4MB. Free memory is still 373.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 377.52ms. Allocated memory is still 396.4MB. Free memory was 370.5MB in the beginning and 350.7MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.35ms. Allocated memory is still 396.4MB. Free memory was 350.7MB in the beginning and 348.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 396.4MB. Free memory was 348.6MB in the beginning and 346.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 385.62ms. Allocated memory is still 396.4MB. Free memory was 346.5MB in the beginning and 328.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 12596.59ms. Allocated memory was 396.4MB in the beginning and 1.1GB in the end (delta: 679.5MB). Free memory was 328.2MB in the beginning and 907.3MB in the end (delta: -579.1MB). Peak memory consumption was 103.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 180 PlacesBefore, 47 PlacesAfterwards, 179 TransitionsBefore, 38 TransitionsAfterwards, 12846 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 120 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 28 ConcurrentYvCompositions, 8 ChoiceCompositions, 194 TotalNumberOfCompositions, 26919 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13887, independent: 13490, independent conditional: 0, independent unconditional: 13490, dependent: 397, dependent conditional: 0, dependent unconditional: 397, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7535, independent: 7442, independent conditional: 0, independent unconditional: 7442, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13887, independent: 6048, independent conditional: 0, independent unconditional: 6048, dependent: 304, dependent conditional: 0, dependent unconditional: 304, unknown: 7535, unknown conditional: 0, unknown unconditional: 7535] , Statistics on independence cache: Total cache size (in pairs): 218, Positive cache size: 188, Positive conditional cache size: 0, Positive unconditional cache size: 188, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 692]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 692]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 259 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 869 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 869 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2087 IncrementalHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 11 mSDtfsCounter, 2087 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=887occurred in iteration=10, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 05:46:55,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...