/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:23:42,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:23:42,665 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 [2023-08-26 21:23:42,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:23:42,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:23:42,699 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:23:42,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:23:42,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:23:42,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:23:42,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:23:42,704 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:23:42,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:23:42,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:23:42,705 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:23:42,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:23:42,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:23:42,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:23:42,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:23:42,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:23:42,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:23:42,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:23:42,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:23:42,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:23:42,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:23:42,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:23:42,709 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:23:42,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:23:42,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:23:42,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:23:42,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:23:42,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:23:42,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:23:42,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:23:42,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:23:42,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:23:42,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:23:42,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:23:42,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:23:42,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:23:42,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:23:42,986 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:23:42,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-26 21:23:44,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:23:44,459 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:23:44,460 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-26 21:23:44,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3db1e76/fe39ada2188345918bec09289652b82d/FLAG0b4d19ebe [2023-08-26 21:23:44,497 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e3db1e76/fe39ada2188345918bec09289652b82d [2023-08-26 21:23:44,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:23:44,502 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:23:44,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:23:44,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:23:44,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:23:44,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:44,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391df3c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44, skipping insertion in model container [2023-08-26 21:23:44,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:44,557 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:23:44,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:23:44,883 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:23:44,914 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:23:44,915 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:23:44,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:23:44,960 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:23:44,960 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:23:44,965 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:23:44,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44 WrapperNode [2023-08-26 21:23:44,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:23:44,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:23:44,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:23:44,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:23:44,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:44,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:44,999 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 21:23:44,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:23:44,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:23:45,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:23:45,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:23:45,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:23:45,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:23:45,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:23:45,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:23:45,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (1/1) ... [2023-08-26 21:23:45,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:23:45,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:23:45,049 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) [2023-08-26 21:23:45,079 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 [2023-08-26 21:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:23:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:23:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:23:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:23:45,095 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:23:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:23:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:23:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:23:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:23:45,098 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:23:45,207 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:23:45,208 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:23:45,350 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:23:45,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:23:45,374 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:23:45,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:23:45 BoogieIcfgContainer [2023-08-26 21:23:45,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:23:45,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:23:45,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:23:45,380 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:23:45,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:23:44" (1/3) ... [2023-08-26 21:23:45,381 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e599c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:23:45, skipping insertion in model container [2023-08-26 21:23:45,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:23:44" (2/3) ... [2023-08-26 21:23:45,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e599c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:23:45, skipping insertion in model container [2023-08-26 21:23:45,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:23:45" (3/3) ... [2023-08-26 21:23:45,383 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-08-26 21:23:45,396 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:23:45,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:23:45,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:23:45,445 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:23:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 21:23:45,543 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 21:23:45,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:23:45,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:23:45,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 21:23:45,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 91 transitions, 191 flow [2023-08-26 21:23:45,555 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:23:45,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-26 21:23:45,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-26 21:23:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 191 flow [2023-08-26 21:23:45,608 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 21:23:45,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:23:45,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:23:45,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-26 21:23:47,852 INFO L134 LiptonReduction]: Checked pairs total: 6246 [2023-08-26 21:23:47,852 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-26 21:23:47,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:23:47,871 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;@6c2370f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:23:47,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 21:23:47,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:23:47,874 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 21:23:47,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:23:47,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:47,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:23:47,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:47,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 335272873, now seen corresponding path program 1 times [2023-08-26 21:23:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:47,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110425500] [2023-08-26 21:23:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:47,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:48,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110425500] [2023-08-26 21:23:48,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110425500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:48,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:48,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:23:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330864536] [2023-08-26 21:23:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:23:48,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:23:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:23:48,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 178 [2023-08-26 21:23:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 178 [2023-08-26 21:23:48,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:48,350 INFO L124 PetriNetUnfolderBase]: 496/815 cut-off events. [2023-08-26 21:23:48,350 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-26 21:23:48,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 815 events. 496/815 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3710 event pairs, 127 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 1648. Up to 710 conditions per place. [2023-08-26 21:23:48,361 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-26 21:23:48,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-26 21:23:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:23:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:23:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-26 21:23:48,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50187265917603 [2023-08-26 21:23:48,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-26 21:23:48,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-26 21:23:48,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:48,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-26 21:23:48,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,389 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 3 states and 268 transitions. [2023-08-26 21:23:48,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-26 21:23:48,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:23:48,392 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-26 21:23:48,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-26 21:23:48,396 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 21:23:48,396 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-26 21:23:48,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:48,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:48,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:23:48,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:48,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1293505374, now seen corresponding path program 1 times [2023-08-26 21:23:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:48,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940989785] [2023-08-26 21:23:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:48,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:48,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940989785] [2023-08-26 21:23:48,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940989785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:48,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:48,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:23:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716572684] [2023-08-26 21:23:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:23:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:23:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:23:48,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:48,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:48,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:48,869 INFO L124 PetriNetUnfolderBase]: 1174/1980 cut-off events. [2023-08-26 21:23:48,869 INFO L125 PetriNetUnfolderBase]: For 239/261 co-relation queries the response was YES. [2023-08-26 21:23:48,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 1980 events. 1174/1980 cut-off events. For 239/261 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11203 event pairs, 455 based on Foata normal form. 5/1645 useless extension candidates. Maximal degree in co-relation 4892. Up to 1013 conditions per place. [2023-08-26 21:23:48,882 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 37 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2023-08-26 21:23:48,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 247 flow [2023-08-26 21:23:48,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:23:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:23:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-08-26 21:23:48,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681647940074906 [2023-08-26 21:23:48,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-08-26 21:23:48,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-08-26 21:23:48,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:48,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-08-26 21:23:48,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,892 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,893 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 250 transitions. [2023-08-26 21:23:48,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 247 flow [2023-08-26 21:23:48,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:23:48,895 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 148 flow [2023-08-26 21:23:48,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-08-26 21:23:48,896 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-26 21:23:48,896 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 148 flow [2023-08-26 21:23:48,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:48,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:48,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:48,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:23:48,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:48,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1443961943, now seen corresponding path program 1 times [2023-08-26 21:23:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:48,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677705038] [2023-08-26 21:23:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:49,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677705038] [2023-08-26 21:23:49,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677705038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:49,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:49,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298468052] [2023-08-26 21:23:49,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:49,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:49,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:49,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:49,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:49,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:49,336 INFO L124 PetriNetUnfolderBase]: 1122/1911 cut-off events. [2023-08-26 21:23:49,336 INFO L125 PetriNetUnfolderBase]: For 1015/1049 co-relation queries the response was YES. [2023-08-26 21:23:49,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 1911 events. 1122/1911 cut-off events. For 1015/1049 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10660 event pairs, 212 based on Foata normal form. 12/1641 useless extension candidates. Maximal degree in co-relation 5806. Up to 876 conditions per place. [2023-08-26 21:23:49,348 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2023-08-26 21:23:49,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 396 flow [2023-08-26 21:23:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-26 21:23:49,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46207865168539325 [2023-08-26 21:23:49,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-26 21:23:49,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-26 21:23:49,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:49,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-26 21:23:49,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,353 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,354 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 148 flow. Second operand 4 states and 329 transitions. [2023-08-26 21:23:49,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 396 flow [2023-08-26 21:23:49,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 64 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:23:49,358 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 232 flow [2023-08-26 21:23:49,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-26 21:23:49,359 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-26 21:23:49,359 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 232 flow [2023-08-26 21:23:49,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:49,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:49,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:23:49,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:49,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1682629028, now seen corresponding path program 1 times [2023-08-26 21:23:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:49,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777253102] [2023-08-26 21:23:49,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:49,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:49,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:49,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777253102] [2023-08-26 21:23:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777253102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:49,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259626301] [2023-08-26 21:23:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:49,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:49,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:49,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 178 [2023-08-26 21:23:49,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:49,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 178 [2023-08-26 21:23:49,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:49,558 INFO L124 PetriNetUnfolderBase]: 817/1356 cut-off events. [2023-08-26 21:23:49,558 INFO L125 PetriNetUnfolderBase]: For 1562/1709 co-relation queries the response was YES. [2023-08-26 21:23:49,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4468 conditions, 1356 events. 817/1356 cut-off events. For 1562/1709 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7294 event pairs, 112 based on Foata normal form. 81/1195 useless extension candidates. Maximal degree in co-relation 4451. Up to 983 conditions per place. [2023-08-26 21:23:49,568 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 42 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-26 21:23:49,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 398 flow [2023-08-26 21:23:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-26 21:23:49,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4747191011235955 [2023-08-26 21:23:49,570 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-26 21:23:49,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-26 21:23:49,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:49,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-26 21:23:49,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,573 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,573 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 232 flow. Second operand 4 states and 338 transitions. [2023-08-26 21:23:49,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 398 flow [2023-08-26 21:23:49,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:23:49,578 INFO L231 Difference]: Finished difference. Result has 41 places, 40 transitions, 228 flow [2023-08-26 21:23:49,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=41, PETRI_TRANSITIONS=40} [2023-08-26 21:23:49,580 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-26 21:23:49,580 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 40 transitions, 228 flow [2023-08-26 21:23:49,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:49,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:49,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:23:49,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:49,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:49,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1127134035, now seen corresponding path program 1 times [2023-08-26 21:23:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:49,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156198924] [2023-08-26 21:23:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:49,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:49,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156198924] [2023-08-26 21:23:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156198924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:49,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846869611] [2023-08-26 21:23:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:49,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:49,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:49,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:49,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 178 [2023-08-26 21:23:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:49,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 178 [2023-08-26 21:23:49,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:49,748 INFO L124 PetriNetUnfolderBase]: 599/994 cut-off events. [2023-08-26 21:23:49,748 INFO L125 PetriNetUnfolderBase]: For 1562/1705 co-relation queries the response was YES. [2023-08-26 21:23:49,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 994 events. 599/994 cut-off events. For 1562/1705 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4987 event pairs, 56 based on Foata normal form. 77/1010 useless extension candidates. Maximal degree in co-relation 3465. Up to 361 conditions per place. [2023-08-26 21:23:49,756 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 53 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-08-26 21:23:49,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 500 flow [2023-08-26 21:23:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-26 21:23:49,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901685393258427 [2023-08-26 21:23:49,758 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-26 21:23:49,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-26 21:23:49,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:49,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-26 21:23:49,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,761 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 228 flow. Second operand 4 states and 349 transitions. [2023-08-26 21:23:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 500 flow [2023-08-26 21:23:49,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:23:49,764 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 267 flow [2023-08-26 21:23:49,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2023-08-26 21:23:49,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-26 21:23:49,765 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 267 flow [2023-08-26 21:23:49,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:49,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:23:49,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:49,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1159585670, now seen corresponding path program 1 times [2023-08-26 21:23:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910285056] [2023-08-26 21:23:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:49,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:49,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910285056] [2023-08-26 21:23:49,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910285056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:49,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806210917] [2023-08-26 21:23:49,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:49,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:49,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:49,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:49,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:49,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:49,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:49,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:49,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:50,003 INFO L124 PetriNetUnfolderBase]: 743/1186 cut-off events. [2023-08-26 21:23:50,003 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2023-08-26 21:23:50,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1186 events. 743/1186 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5287 event pairs, 58 based on Foata normal form. 4/1166 useless extension candidates. Maximal degree in co-relation 4869. Up to 658 conditions per place. [2023-08-26 21:23:50,012 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 59 selfloop transitions, 21 changer transitions 0/80 dead transitions. [2023-08-26 21:23:50,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 636 flow [2023-08-26 21:23:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-26 21:23:50,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46348314606741575 [2023-08-26 21:23:50,014 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-26 21:23:50,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-26 21:23:50,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:50,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-26 21:23:50,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,017 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,017 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 267 flow. Second operand 4 states and 330 transitions. [2023-08-26 21:23:50,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 636 flow [2023-08-26 21:23:50,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 80 transitions, 609 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 21:23:50,022 INFO L231 Difference]: Finished difference. Result has 47 places, 55 transitions, 433 flow [2023-08-26 21:23:50,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=47, PETRI_TRANSITIONS=55} [2023-08-26 21:23:50,022 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-26 21:23:50,023 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 55 transitions, 433 flow [2023-08-26 21:23:50,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:50,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:50,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:23:50,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:50,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -373104716, now seen corresponding path program 1 times [2023-08-26 21:23:50,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:50,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619326128] [2023-08-26 21:23:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:50,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:50,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619326128] [2023-08-26 21:23:50,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619326128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:50,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:50,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775145899] [2023-08-26 21:23:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:50,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:50,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:50,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:50,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 55 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:50,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:50,254 INFO L124 PetriNetUnfolderBase]: 792/1289 cut-off events. [2023-08-26 21:23:50,255 INFO L125 PetriNetUnfolderBase]: For 3524/3524 co-relation queries the response was YES. [2023-08-26 21:23:50,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5844 conditions, 1289 events. 792/1289 cut-off events. For 3524/3524 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5997 event pairs, 98 based on Foata normal form. 8/1261 useless extension candidates. Maximal degree in co-relation 5821. Up to 504 conditions per place. [2023-08-26 21:23:50,265 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 66 selfloop transitions, 27 changer transitions 0/93 dead transitions. [2023-08-26 21:23:50,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 93 transitions, 829 flow [2023-08-26 21:23:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-08-26 21:23:50,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691011235955056 [2023-08-26 21:23:50,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-08-26 21:23:50,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-08-26 21:23:50,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:50,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-08-26 21:23:50,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,269 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,269 INFO L175 Difference]: Start difference. First operand has 47 places, 55 transitions, 433 flow. Second operand 4 states and 334 transitions. [2023-08-26 21:23:50,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 93 transitions, 829 flow [2023-08-26 21:23:50,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 829 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:23:50,276 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 585 flow [2023-08-26 21:23:50,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=585, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2023-08-26 21:23:50,276 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-26 21:23:50,277 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 585 flow [2023-08-26 21:23:50,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:50,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:50,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:23:50,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:50,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash -424891549, now seen corresponding path program 1 times [2023-08-26 21:23:50,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:50,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102503510] [2023-08-26 21:23:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:50,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102503510] [2023-08-26 21:23:50,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102503510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:50,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:50,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:50,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442733016] [2023-08-26 21:23:50,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:50,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:50,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:50,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:50,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:50,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:50,542 INFO L124 PetriNetUnfolderBase]: 771/1254 cut-off events. [2023-08-26 21:23:50,542 INFO L125 PetriNetUnfolderBase]: For 5250/5250 co-relation queries the response was YES. [2023-08-26 21:23:50,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6435 conditions, 1254 events. 771/1254 cut-off events. For 5250/5250 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5733 event pairs, 98 based on Foata normal form. 6/1224 useless extension candidates. Maximal degree in co-relation 6407. Up to 667 conditions per place. [2023-08-26 21:23:50,554 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 72 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2023-08-26 21:23:50,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 1118 flow [2023-08-26 21:23:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:23:50,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:23:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-08-26 21:23:50,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648876404494382 [2023-08-26 21:23:50,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-08-26 21:23:50,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-08-26 21:23:50,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:50,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-08-26 21:23:50,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,558 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 585 flow. Second operand 4 states and 331 transitions. [2023-08-26 21:23:50,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 1118 flow [2023-08-26 21:23:50,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 1116 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 21:23:50,571 INFO L231 Difference]: Finished difference. Result has 59 places, 69 transitions, 889 flow [2023-08-26 21:23:50,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=889, PETRI_PLACES=59, PETRI_TRANSITIONS=69} [2023-08-26 21:23:50,572 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-08-26 21:23:50,572 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 69 transitions, 889 flow [2023-08-26 21:23:50,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:50,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:50,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:23:50,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:50,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash -286724155, now seen corresponding path program 1 times [2023-08-26 21:23:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113667846] [2023-08-26 21:23:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:50,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:50,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113667846] [2023-08-26 21:23:50,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113667846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:50,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:50,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259035474] [2023-08-26 21:23:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:50,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:23:50,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:23:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:23:50,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:50,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 69 transitions, 889 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:50,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:50,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:50,869 INFO L124 PetriNetUnfolderBase]: 913/1495 cut-off events. [2023-08-26 21:23:50,869 INFO L125 PetriNetUnfolderBase]: For 10650/10650 co-relation queries the response was YES. [2023-08-26 21:23:50,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8451 conditions, 1495 events. 913/1495 cut-off events. For 10650/10650 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7199 event pairs, 157 based on Foata normal form. 25/1469 useless extension candidates. Maximal degree in co-relation 8418. Up to 890 conditions per place. [2023-08-26 21:23:50,882 INFO L140 encePairwiseOnDemand]: 170/178 looper letters, 95 selfloop transitions, 20 changer transitions 3/118 dead transitions. [2023-08-26 21:23:50,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 118 transitions, 1516 flow [2023-08-26 21:23:50,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:23:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:23:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 405 transitions. [2023-08-26 21:23:50,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550561797752809 [2023-08-26 21:23:50,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 405 transitions. [2023-08-26 21:23:50,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 405 transitions. [2023-08-26 21:23:50,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:50,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 405 transitions. [2023-08-26 21:23:50,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,887 INFO L175 Difference]: Start difference. First operand has 59 places, 69 transitions, 889 flow. Second operand 5 states and 405 transitions. [2023-08-26 21:23:50,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 118 transitions, 1516 flow [2023-08-26 21:23:50,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 1505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:23:50,912 INFO L231 Difference]: Finished difference. Result has 65 places, 79 transitions, 1147 flow [2023-08-26 21:23:50,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1147, PETRI_PLACES=65, PETRI_TRANSITIONS=79} [2023-08-26 21:23:50,912 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2023-08-26 21:23:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 79 transitions, 1147 flow [2023-08-26 21:23:50,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:50,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:50,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:50,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:23:50,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:50,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -113486479, now seen corresponding path program 1 times [2023-08-26 21:23:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167977064] [2023-08-26 21:23:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:51,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:51,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167977064] [2023-08-26 21:23:51,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167977064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:51,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:51,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907791913] [2023-08-26 21:23:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:51,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:23:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:23:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:23:51,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 178 [2023-08-26 21:23:51,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 79 transitions, 1147 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:51,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 178 [2023-08-26 21:23:51,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:51,307 INFO L124 PetriNetUnfolderBase]: 1330/2227 cut-off events. [2023-08-26 21:23:51,308 INFO L125 PetriNetUnfolderBase]: For 16646/16646 co-relation queries the response was YES. [2023-08-26 21:23:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12732 conditions, 2227 events. 1330/2227 cut-off events. For 16646/16646 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12214 event pairs, 195 based on Foata normal form. 15/2146 useless extension candidates. Maximal degree in co-relation 12695. Up to 1042 conditions per place. [2023-08-26 21:23:51,323 INFO L140 encePairwiseOnDemand]: 169/178 looper letters, 101 selfloop transitions, 31 changer transitions 3/135 dead transitions. [2023-08-26 21:23:51,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 135 transitions, 1899 flow [2023-08-26 21:23:51,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:23:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:23:51,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 413 transitions. [2023-08-26 21:23:51,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640449438202247 [2023-08-26 21:23:51,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 413 transitions. [2023-08-26 21:23:51,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 413 transitions. [2023-08-26 21:23:51,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:51,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 413 transitions. [2023-08-26 21:23:51,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,328 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,328 INFO L175 Difference]: Start difference. First operand has 65 places, 79 transitions, 1147 flow. Second operand 5 states and 413 transitions. [2023-08-26 21:23:51,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 135 transitions, 1899 flow [2023-08-26 21:23:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 135 transitions, 1890 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:23:51,360 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 1522 flow [2023-08-26 21:23:51,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1522, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2023-08-26 21:23:51,361 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2023-08-26 21:23:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 1522 flow [2023-08-26 21:23:51,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:51,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:51,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:23:51,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:51,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -726137655, now seen corresponding path program 2 times [2023-08-26 21:23:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400946022] [2023-08-26 21:23:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:51,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:51,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:51,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400946022] [2023-08-26 21:23:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400946022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:51,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645708446] [2023-08-26 21:23:51,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:51,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:51,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:51,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-26 21:23:51,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 1522 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:51,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-26 21:23:51,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:51,758 INFO L124 PetriNetUnfolderBase]: 1278/2263 cut-off events. [2023-08-26 21:23:51,759 INFO L125 PetriNetUnfolderBase]: For 21816/21973 co-relation queries the response was YES. [2023-08-26 21:23:51,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13319 conditions, 2263 events. 1278/2263 cut-off events. For 21816/21973 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14013 event pairs, 299 based on Foata normal form. 103/2229 useless extension candidates. Maximal degree in co-relation 13278. Up to 1060 conditions per place. [2023-08-26 21:23:51,776 INFO L140 encePairwiseOnDemand]: 174/178 looper letters, 103 selfloop transitions, 16 changer transitions 9/140 dead transitions. [2023-08-26 21:23:51,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 2077 flow [2023-08-26 21:23:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:23:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:23:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2023-08-26 21:23:51,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764044943820225 [2023-08-26 21:23:51,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2023-08-26 21:23:51,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2023-08-26 21:23:51,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:51,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2023-08-26 21:23:51,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,781 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,781 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 1522 flow. Second operand 5 states and 424 transitions. [2023-08-26 21:23:51,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 2077 flow [2023-08-26 21:23:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 2077 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:23:51,842 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 1559 flow [2023-08-26 21:23:51,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1559, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-08-26 21:23:51,842 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-08-26 21:23:51,842 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 1559 flow [2023-08-26 21:23:51,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:51,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:51,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:23:51,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:51,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1298424361, now seen corresponding path program 3 times [2023-08-26 21:23:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:51,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905802251] [2023-08-26 21:23:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:51,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905802251] [2023-08-26 21:23:51,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905802251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:51,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:51,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:23:51,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847411590] [2023-08-26 21:23:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:51,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:23:51,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:23:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:23:51,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-26 21:23:51,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 1559 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:51,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:51,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-26 21:23:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:52,209 INFO L124 PetriNetUnfolderBase]: 921/1857 cut-off events. [2023-08-26 21:23:52,210 INFO L125 PetriNetUnfolderBase]: For 27606/29006 co-relation queries the response was YES. [2023-08-26 21:23:52,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9730 conditions, 1857 events. 921/1857 cut-off events. For 27606/29006 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 13687 event pairs, 212 based on Foata normal form. 1210/2868 useless extension candidates. Maximal degree in co-relation 9687. Up to 1228 conditions per place. [2023-08-26 21:23:52,223 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 107 selfloop transitions, 8 changer transitions 3/149 dead transitions. [2023-08-26 21:23:52,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 149 transitions, 2544 flow [2023-08-26 21:23:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:23:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:23:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-26 21:23:52,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696629213483146 [2023-08-26 21:23:52,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:52,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,228 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 1559 flow. Second operand 5 states and 418 transitions. [2023-08-26 21:23:52,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 149 transitions, 2544 flow [2023-08-26 21:23:52,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 149 transitions, 2444 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-26 21:23:52,264 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 1566 flow [2023-08-26 21:23:52,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1566, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2023-08-26 21:23:52,264 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-08-26 21:23:52,264 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 1566 flow [2023-08-26 21:23:52,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:52,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:23:52,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:52,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1595689169, now seen corresponding path program 1 times [2023-08-26 21:23:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139955557] [2023-08-26 21:23:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:52,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:52,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139955557] [2023-08-26 21:23:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139955557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:52,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921448583] [2023-08-26 21:23:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:23:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:23:52,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:23:52,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-26 21:23:52,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 1566 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:52,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-26 21:23:52,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:52,634 INFO L124 PetriNetUnfolderBase]: 675/1547 cut-off events. [2023-08-26 21:23:52,634 INFO L125 PetriNetUnfolderBase]: For 22753/24014 co-relation queries the response was YES. [2023-08-26 21:23:52,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8186 conditions, 1547 events. 675/1547 cut-off events. For 22753/24014 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 12493 event pairs, 38 based on Foata normal form. 1038/2368 useless extension candidates. Maximal degree in co-relation 8140. Up to 703 conditions per place. [2023-08-26 21:23:52,642 INFO L140 encePairwiseOnDemand]: 168/178 looper letters, 103 selfloop transitions, 21 changer transitions 5/160 dead transitions. [2023-08-26 21:23:52,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 160 transitions, 2671 flow [2023-08-26 21:23:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:23:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:23:52,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2023-08-26 21:23:52,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46709470304975925 [2023-08-26 21:23:52,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2023-08-26 21:23:52,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2023-08-26 21:23:52,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:52,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2023-08-26 21:23:52,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,648 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 1566 flow. Second operand 7 states and 582 transitions. [2023-08-26 21:23:52,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 160 transitions, 2671 flow [2023-08-26 21:23:52,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 160 transitions, 2660 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:23:52,671 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 1484 flow [2023-08-26 21:23:52,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1484, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2023-08-26 21:23:52,672 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 53 predicate places. [2023-08-26 21:23:52,672 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 1484 flow [2023-08-26 21:23:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:52,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:23:52,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:52,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1974348074, now seen corresponding path program 1 times [2023-08-26 21:23:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:52,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764126882] [2023-08-26 21:23:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:52,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:52,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:52,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764126882] [2023-08-26 21:23:52,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764126882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:52,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:52,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:23:52,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222030495] [2023-08-26 21:23:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:52,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:23:52,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:52,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:23:52,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:23:52,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 178 [2023-08-26 21:23:52,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 1484 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:52,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 178 [2023-08-26 21:23:52,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:52,896 INFO L124 PetriNetUnfolderBase]: 498/1198 cut-off events. [2023-08-26 21:23:52,897 INFO L125 PetriNetUnfolderBase]: For 16424/17276 co-relation queries the response was YES. [2023-08-26 21:23:52,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 1198 events. 498/1198 cut-off events. For 16424/17276 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9460 event pairs, 48 based on Foata normal form. 501/1659 useless extension candidates. Maximal degree in co-relation 7945. Up to 489 conditions per place. [2023-08-26 21:23:52,903 INFO L140 encePairwiseOnDemand]: 171/178 looper letters, 15 selfloop transitions, 6 changer transitions 89/113 dead transitions. [2023-08-26 21:23:52,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 113 transitions, 2040 flow [2023-08-26 21:23:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:23:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:23:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-26 21:23:52,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696629213483146 [2023-08-26 21:23:52,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:52,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-26 21:23:52,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,907 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 1484 flow. Second operand 5 states and 418 transitions. [2023-08-26 21:23:52,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 113 transitions, 2040 flow [2023-08-26 21:23:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 113 transitions, 2013 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 21:23:52,946 INFO L231 Difference]: Finished difference. Result has 84 places, 19 transitions, 226 flow [2023-08-26 21:23:52,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=84, PETRI_TRANSITIONS=19} [2023-08-26 21:23:52,947 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2023-08-26 21:23:52,947 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 19 transitions, 226 flow [2023-08-26 21:23:52,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:52,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:23:52,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:23:52,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:23:52,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:23:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1996083586, now seen corresponding path program 1 times [2023-08-26 21:23:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:23:52,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680097904] [2023-08-26 21:23:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:23:52,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:23:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:23:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:23:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:23:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680097904] [2023-08-26 21:23:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680097904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:23:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:23:53,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:23:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117079626] [2023-08-26 21:23:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:23:53,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:23:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:23:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:23:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:23:53,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 178 [2023-08-26 21:23:53,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 19 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:53,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:23:53,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 178 [2023-08-26 21:23:53,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:23:53,086 INFO L124 PetriNetUnfolderBase]: 11/39 cut-off events. [2023-08-26 21:23:53,086 INFO L125 PetriNetUnfolderBase]: For 379/383 co-relation queries the response was YES. [2023-08-26 21:23:53,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 39 events. 11/39 cut-off events. For 379/383 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 2 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 239. Up to 13 conditions per place. [2023-08-26 21:23:53,086 INFO L140 encePairwiseOnDemand]: 172/178 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-26 21:23:53,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 26 transitions, 307 flow [2023-08-26 21:23:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:23:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:23:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2023-08-26 21:23:53,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434991974317817 [2023-08-26 21:23:53,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 542 transitions. [2023-08-26 21:23:53,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 542 transitions. [2023-08-26 21:23:53,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:23:53,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 542 transitions. [2023-08-26 21:23:53,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:53,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:53,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:53,092 INFO L175 Difference]: Start difference. First operand has 84 places, 19 transitions, 226 flow. Second operand 7 states and 542 transitions. [2023-08-26 21:23:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 26 transitions, 307 flow [2023-08-26 21:23:53,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 152 flow, removed 10 selfloop flow, removed 38 redundant places. [2023-08-26 21:23:53,093 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-26 21:23:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-26 21:23:53,094 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-26 21:23:53,094 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-26 21:23:53,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:23:53,096 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 21:23:53,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 21:23:53,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 21:23:53,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 21:23:53,099 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:23:53,102 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:23:53,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:23:53,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:23:53 BasicIcfg [2023-08-26 21:23:53,105 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:23:53,105 INFO L158 Benchmark]: Toolchain (without parser) took 8603.31ms. Allocated memory was 341.8MB in the beginning and 507.5MB in the end (delta: 165.7MB). Free memory was 315.8MB in the beginning and 292.9MB in the end (delta: 23.0MB). Peak memory consumption was 190.1MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,105 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory was 318.7MB in the beginning and 318.6MB in the end (delta: 123.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.12ms. Allocated memory is still 341.8MB. Free memory was 315.8MB in the beginning and 295.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.33ms. Allocated memory is still 341.8MB. Free memory was 295.7MB in the beginning and 293.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,106 INFO L158 Benchmark]: Boogie Preprocessor took 23.01ms. Allocated memory is still 341.8MB. Free memory was 293.7MB in the beginning and 292.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:23:53,106 INFO L158 Benchmark]: RCFGBuilder took 352.93ms. Allocated memory is still 341.8MB. Free memory was 292.2MB in the beginning and 276.3MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,106 INFO L158 Benchmark]: TraceAbstraction took 7727.09ms. Allocated memory was 341.8MB in the beginning and 507.5MB in the end (delta: 165.7MB). Free memory was 275.7MB in the beginning and 292.9MB in the end (delta: -17.2MB). Peak memory consumption was 150.3MB. Max. memory is 16.0GB. [2023-08-26 21:23:53,107 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory was 318.7MB in the beginning and 318.6MB in the end (delta: 123.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 462.12ms. Allocated memory is still 341.8MB. Free memory was 315.8MB in the beginning and 295.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.33ms. Allocated memory is still 341.8MB. Free memory was 295.7MB in the beginning and 293.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.01ms. Allocated memory is still 341.8MB. Free memory was 293.7MB in the beginning and 292.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 352.93ms. Allocated memory is still 341.8MB. Free memory was 292.2MB in the beginning and 276.3MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7727.09ms. Allocated memory was 341.8MB in the beginning and 507.5MB in the end (delta: 165.7MB). Free memory was 275.7MB in the beginning and 292.9MB in the end (delta: -17.2MB). Peak memory consumption was 150.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 98 PlacesBefore, 34 PlacesAfterwards, 91 TransitionsBefore, 24 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 84 TotalNumberOfCompositions, 6246 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2726, independent: 2543, independent conditional: 0, independent unconditional: 2543, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1214, independent: 1165, independent conditional: 0, independent unconditional: 1165, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2726, independent: 1378, independent conditional: 0, independent unconditional: 1378, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 1214, unknown conditional: 0, unknown unconditional: 1214] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 731]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 731]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 122 locations, 16 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: 7.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 904 IncrementalHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 35 mSDtfsCounter, 904 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1566occurred in iteration=12, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 21:23:53,123 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...