/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:20:16,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:20:16,127 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 10:20:16,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:20:16,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:20:16,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:20:16,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:20:16,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:20:16,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:20:16,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:20:16,153 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:20:16,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:20:16,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:20:16,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:20:16,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:20:16,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:20:16,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:20:16,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:20:16,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:20:16,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:20:16,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:20:16,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:20:16,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:20:16,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:20:16,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:20:16,158 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:20:16,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:20:16,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:16,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:20:16,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:20:16,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:20:16,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:20:16,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:20:16,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:20:16,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:20:16,162 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:20:16,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:20:16,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:20:16,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:20:16,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:20:16,504 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:20:16,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-27 10:20:17,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:20:18,013 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:20:18,013 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-27 10:20:18,033 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8139c8702/aa0a589c11c64b4fb7e653d5110a095b/FLAGf2467f76a [2023-08-27 10:20:18,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8139c8702/aa0a589c11c64b4fb7e653d5110a095b [2023-08-27 10:20:18,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:20:18,055 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:20:18,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:18,057 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:20:18,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:20:18,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b9f4a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18, skipping insertion in model container [2023-08-27 10:20:18,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,116 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:20:18,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:18,514 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:20:18,538 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:18,540 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:20:18,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:20:18,624 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:18,624 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:20:18,630 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:20:18,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18 WrapperNode [2023-08-27 10:20:18,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:20:18,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:18,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:20:18,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:20:18,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,689 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 181 [2023-08-27 10:20:18,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:20:18,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:20:18,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:20:18,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:20:18,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,727 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:20:18,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:20:18,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:20:18,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:20:18,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (1/1) ... [2023-08-27 10:20:18,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:20:18,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:20:18,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 10:20:18,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 10:20:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:20:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:20:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:20:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:20:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:20:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:20:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:20:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:20:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:20:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:20:18,844 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 10:20:18,999 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:20:19,001 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:20:19,443 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:20:19,667 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:20:19,667 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:20:19,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:19 BoogieIcfgContainer [2023-08-27 10:20:19,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:20:19,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:20:19,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:20:19,675 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:20:19,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:20:18" (1/3) ... [2023-08-27 10:20:19,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3911fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:19, skipping insertion in model container [2023-08-27 10:20:19,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:20:18" (2/3) ... [2023-08-27 10:20:19,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3911fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:20:19, skipping insertion in model container [2023-08-27 10:20:19,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:20:19" (3/3) ... [2023-08-27 10:20:19,678 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-27 10:20:19,694 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:20:19,694 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-27 10:20:19,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:20:19,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:20:19,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 259 flow [2023-08-27 10:20:19,863 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-27 10:20:19,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:19,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-27 10:20:19,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 122 transitions, 259 flow [2023-08-27 10:20:19,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 119 transitions, 247 flow [2023-08-27 10:20:19,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:20:19,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-27 10:20:19,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-27 10:20:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 119 transitions, 247 flow [2023-08-27 10:20:19,934 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-27 10:20:19,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:19,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-27 10:20:19,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 3106 [2023-08-27 10:20:24,626 INFO L134 LiptonReduction]: Checked pairs total: 11681 [2023-08-27 10:20:24,626 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-27 10:20:24,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:20:24,642 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;@1bdd9b89, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:20:24,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 10:20:24,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:20:24,647 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-27 10:20:24,647 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:20:24,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:24,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:24,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:24,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash -330897229, now seen corresponding path program 1 times [2023-08-27 10:20:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:24,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615695835] [2023-08-27 10:20:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615695835] [2023-08-27 10:20:24,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615695835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:24,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:24,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013384100] [2023-08-27 10:20:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:24,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:24,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 10:20:24,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 10:20:24,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:25,906 INFO L124 PetriNetUnfolderBase]: 3192/4713 cut-off events. [2023-08-27 10:20:25,907 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 10:20:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 4713 events. 3192/4713 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23202 event pairs, 1474 based on Foata normal form. 0/3796 useless extension candidates. Maximal degree in co-relation 9498. Up to 2684 conditions per place. [2023-08-27 10:20:25,943 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 50 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-27 10:20:25,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 233 flow [2023-08-27 10:20:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-27 10:20:25,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49557522123893805 [2023-08-27 10:20:25,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-27 10:20:25,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-27 10:20:25,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:25,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-27 10:20:25,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:25,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:25,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:25,977 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 336 transitions. [2023-08-27 10:20:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 233 flow [2023-08-27 10:20:25,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:25,983 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 106 flow [2023-08-27 10:20:25,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 10:20:25,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 10:20:25,989 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 106 flow [2023-08-27 10:20:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:25,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:25,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:25,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:20:25,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:25,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:25,998 INFO L85 PathProgramCache]: Analyzing trace with hash -273444834, now seen corresponding path program 1 times [2023-08-27 10:20:25,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:25,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808121427] [2023-08-27 10:20:25,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:25,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:26,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:26,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808121427] [2023-08-27 10:20:26,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808121427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:26,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:26,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:26,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947388791] [2023-08-27 10:20:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:26,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:26,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:26,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-27 10:20:26,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:26,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:26,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-27 10:20:26,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:26,885 INFO L124 PetriNetUnfolderBase]: 2525/3834 cut-off events. [2023-08-27 10:20:26,886 INFO L125 PetriNetUnfolderBase]: For 285/317 co-relation queries the response was YES. [2023-08-27 10:20:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8875 conditions, 3834 events. 2525/3834 cut-off events. For 285/317 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19608 event pairs, 377 based on Foata normal form. 0/3378 useless extension candidates. Maximal degree in co-relation 8864. Up to 3087 conditions per place. [2023-08-27 10:20:26,908 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 45 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-27 10:20:26,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 246 flow [2023-08-27 10:20:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-27 10:20:26,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882005899705015 [2023-08-27 10:20:26,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-27 10:20:26,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-27 10:20:26,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:26,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-27 10:20:26,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 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) [2023-08-27 10:20:26,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:26,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:26,918 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 106 flow. Second operand 3 states and 331 transitions. [2023-08-27 10:20:26,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 246 flow [2023-08-27 10:20:26,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:26,925 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 104 flow [2023-08-27 10:20:26,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-27 10:20:26,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 10:20:26,928 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 104 flow [2023-08-27 10:20:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:26,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:26,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:20:26,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:26,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash -787450195, now seen corresponding path program 1 times [2023-08-27 10:20:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279666507] [2023-08-27 10:20:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:27,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279666507] [2023-08-27 10:20:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279666507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:20:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866785652] [2023-08-27 10:20:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:27,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:20:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:20:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:20:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-27 10:20:27,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:27,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:27,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-27 10:20:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:27,740 INFO L124 PetriNetUnfolderBase]: 2270/3475 cut-off events. [2023-08-27 10:20:27,740 INFO L125 PetriNetUnfolderBase]: For 378/391 co-relation queries the response was YES. [2023-08-27 10:20:27,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3475 events. 2270/3475 cut-off events. For 378/391 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17139 event pairs, 1004 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 7890. Up to 1969 conditions per place. [2023-08-27 10:20:27,760 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 44 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 10:20:27,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 240 flow [2023-08-27 10:20:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:20:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:20:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-27 10:20:27,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48672566371681414 [2023-08-27 10:20:27,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-27 10:20:27,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-27 10:20:27,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:27,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-27 10:20:27,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 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) [2023-08-27 10:20:27,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:27,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:27,765 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 104 flow. Second operand 3 states and 330 transitions. [2023-08-27 10:20:27,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 240 flow [2023-08-27 10:20:27,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:27,768 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 108 flow [2023-08-27 10:20:27,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-27 10:20:27,770 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 10:20:27,770 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 108 flow [2023-08-27 10:20:27,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:27,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:27,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:20:27,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:27,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash 127584676, now seen corresponding path program 1 times [2023-08-27 10:20:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:27,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776400814] [2023-08-27 10:20:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:28,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776400814] [2023-08-27 10:20:28,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776400814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:28,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:28,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:20:28,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776863485] [2023-08-27 10:20:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:20:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:20:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:20:28,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 10:20:28,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:28,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:28,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 10:20:28,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:30,078 INFO L124 PetriNetUnfolderBase]: 4656/7090 cut-off events. [2023-08-27 10:20:30,078 INFO L125 PetriNetUnfolderBase]: For 922/982 co-relation queries the response was YES. [2023-08-27 10:20:30,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16728 conditions, 7090 events. 4656/7090 cut-off events. For 922/982 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39902 event pairs, 654 based on Foata normal form. 32/6651 useless extension candidates. Maximal degree in co-relation 16715. Up to 2671 conditions per place. [2023-08-27 10:20:30,122 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 92 selfloop transitions, 28 changer transitions 0/124 dead transitions. [2023-08-27 10:20:30,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 124 transitions, 602 flow [2023-08-27 10:20:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:20:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:20:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 730 transitions. [2023-08-27 10:20:30,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461441213653603 [2023-08-27 10:20:30,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 730 transitions. [2023-08-27 10:20:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 730 transitions. [2023-08-27 10:20:30,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:30,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 730 transitions. [2023-08-27 10:20:30,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:30,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:30,130 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:30,131 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 108 flow. Second operand 7 states and 730 transitions. [2023-08-27 10:20:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 124 transitions, 602 flow [2023-08-27 10:20:30,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 124 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:30,161 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 306 flow [2023-08-27 10:20:30,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-08-27 10:20:30,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-27 10:20:30,162 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 306 flow [2023-08-27 10:20:30,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:30,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:30,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:20:30,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:30,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash 124401286, now seen corresponding path program 2 times [2023-08-27 10:20:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:30,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916622977] [2023-08-27 10:20:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:30,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:30,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:30,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916622977] [2023-08-27 10:20:30,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916622977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:30,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:30,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:20:30,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100395138] [2023-08-27 10:20:30,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:30,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:20:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:30,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:20:30,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:20:30,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 10:20:30,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:30,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:30,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 10:20:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:32,122 INFO L124 PetriNetUnfolderBase]: 5217/7896 cut-off events. [2023-08-27 10:20:32,122 INFO L125 PetriNetUnfolderBase]: For 9905/9978 co-relation queries the response was YES. [2023-08-27 10:20:32,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29064 conditions, 7896 events. 5217/7896 cut-off events. For 9905/9978 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 45035 event pairs, 1907 based on Foata normal form. 32/7448 useless extension candidates. Maximal degree in co-relation 29047. Up to 6294 conditions per place. [2023-08-27 10:20:32,181 INFO L140 encePairwiseOnDemand]: 213/226 looper letters, 72 selfloop transitions, 32 changer transitions 0/108 dead transitions. [2023-08-27 10:20:32,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 753 flow [2023-08-27 10:20:32,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-08-27 10:20:32,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-27 10:20:32,183 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-08-27 10:20:32,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-08-27 10:20:32,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:32,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-08-27 10:20:32,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:32,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:32,188 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:32,189 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 306 flow. Second operand 6 states and 603 transitions. [2023-08-27 10:20:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 753 flow [2023-08-27 10:20:32,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:32,199 INFO L231 Difference]: Finished difference. Result has 57 places, 76 transitions, 519 flow [2023-08-27 10:20:32,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=57, PETRI_TRANSITIONS=76} [2023-08-27 10:20:32,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-27 10:20:32,200 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 519 flow [2023-08-27 10:20:32,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:32,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:32,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:32,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:20:32,201 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:32,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -438586518, now seen corresponding path program 1 times [2023-08-27 10:20:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524020952] [2023-08-27 10:20:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:32,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:32,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524020952] [2023-08-27 10:20:32,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524020952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:32,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:32,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:20:32,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322455857] [2023-08-27 10:20:32,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:32,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:32,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:32,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:32,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:32,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 10:20:32,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 76 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:32,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 10:20:32,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:33,228 INFO L124 PetriNetUnfolderBase]: 4221/6736 cut-off events. [2023-08-27 10:20:33,228 INFO L125 PetriNetUnfolderBase]: For 14866/14866 co-relation queries the response was YES. [2023-08-27 10:20:33,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27748 conditions, 6736 events. 4221/6736 cut-off events. For 14866/14866 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41566 event pairs, 568 based on Foata normal form. 566/6225 useless extension candidates. Maximal degree in co-relation 27728. Up to 3664 conditions per place. [2023-08-27 10:20:33,277 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 161 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-27 10:20:33,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 167 transitions, 1504 flow [2023-08-27 10:20:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:33,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2023-08-27 10:20:33,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47676991150442477 [2023-08-27 10:20:33,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2023-08-27 10:20:33,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2023-08-27 10:20:33,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:33,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2023-08-27 10:20:33,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:33,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:33,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:33,282 INFO L175 Difference]: Start difference. First operand has 57 places, 76 transitions, 519 flow. Second operand 4 states and 431 transitions. [2023-08-27 10:20:33,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 167 transitions, 1504 flow [2023-08-27 10:20:33,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 167 transitions, 1456 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:33,301 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 517 flow [2023-08-27 10:20:33,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2023-08-27 10:20:33,302 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 10:20:33,302 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 517 flow [2023-08-27 10:20:33,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:33,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:33,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:20:33,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:33,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -939585923, now seen corresponding path program 1 times [2023-08-27 10:20:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:33,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956668080] [2023-08-27 10:20:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:33,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:33,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956668080] [2023-08-27 10:20:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956668080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:33,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:33,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:33,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858193805] [2023-08-27 10:20:33,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:33,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:33,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 10:20:33,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:33,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:33,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 10:20:33,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:34,086 INFO L124 PetriNetUnfolderBase]: 3429/5443 cut-off events. [2023-08-27 10:20:34,087 INFO L125 PetriNetUnfolderBase]: For 15503/15503 co-relation queries the response was YES. [2023-08-27 10:20:34,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 5443 events. 3429/5443 cut-off events. For 15503/15503 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31492 event pairs, 959 based on Foata normal form. 0/4975 useless extension candidates. Maximal degree in co-relation 24644. Up to 3987 conditions per place. [2023-08-27 10:20:34,165 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 114 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-27 10:20:34,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 1073 flow [2023-08-27 10:20:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2023-08-27 10:20:34,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461283185840708 [2023-08-27 10:20:34,168 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2023-08-27 10:20:34,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2023-08-27 10:20:34,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:34,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2023-08-27 10:20:34,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,171 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 517 flow. Second operand 4 states and 417 transitions. [2023-08-27 10:20:34,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 1073 flow [2023-08-27 10:20:34,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 1067 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:34,181 INFO L231 Difference]: Finished difference. Result has 58 places, 73 transitions, 507 flow [2023-08-27 10:20:34,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=58, PETRI_TRANSITIONS=73} [2023-08-27 10:20:34,181 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-27 10:20:34,182 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 73 transitions, 507 flow [2023-08-27 10:20:34,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:34,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:34,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:20:34,182 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:34,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:34,183 INFO L85 PathProgramCache]: Analyzing trace with hash -72818622, now seen corresponding path program 1 times [2023-08-27 10:20:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:34,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895074816] [2023-08-27 10:20:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:34,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:34,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895074816] [2023-08-27 10:20:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895074816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:34,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:34,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:20:34,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742938089] [2023-08-27 10:20:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:34,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:20:34,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:20:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:20:34,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 10:20:34,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 73 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:34,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 10:20:34,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:34,889 INFO L124 PetriNetUnfolderBase]: 2781/4401 cut-off events. [2023-08-27 10:20:34,889 INFO L125 PetriNetUnfolderBase]: For 12272/12272 co-relation queries the response was YES. [2023-08-27 10:20:34,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20572 conditions, 4401 events. 2781/4401 cut-off events. For 12272/12272 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24657 event pairs, 492 based on Foata normal form. 0/4363 useless extension candidates. Maximal degree in co-relation 20549. Up to 2225 conditions per place. [2023-08-27 10:20:34,915 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 142 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2023-08-27 10:20:34,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 150 transitions, 1352 flow [2023-08-27 10:20:34,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:20:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:20:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 437 transitions. [2023-08-27 10:20:34,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834070796460177 [2023-08-27 10:20:34,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 437 transitions. [2023-08-27 10:20:34,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 437 transitions. [2023-08-27 10:20:34,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:34,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 437 transitions. [2023-08-27 10:20:34,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,921 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,921 INFO L175 Difference]: Start difference. First operand has 58 places, 73 transitions, 507 flow. Second operand 4 states and 437 transitions. [2023-08-27 10:20:34,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 150 transitions, 1352 flow [2023-08-27 10:20:34,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 150 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:34,933 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 546 flow [2023-08-27 10:20:34,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2023-08-27 10:20:34,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 10:20:34,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 546 flow [2023-08-27 10:20:34,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:34,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:34,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:34,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:20:34,935 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:34,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:34,935 INFO L85 PathProgramCache]: Analyzing trace with hash 307854672, now seen corresponding path program 1 times [2023-08-27 10:20:34,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:34,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599694748] [2023-08-27 10:20:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599694748] [2023-08-27 10:20:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599694748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:35,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:35,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:20:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553275906] [2023-08-27 10:20:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:35,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:20:35,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:35,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:20:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:20:35,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 10:20:35,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:35,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:35,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 10:20:35,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:36,481 INFO L124 PetriNetUnfolderBase]: 2955/4682 cut-off events. [2023-08-27 10:20:36,482 INFO L125 PetriNetUnfolderBase]: For 14390/14390 co-relation queries the response was YES. [2023-08-27 10:20:36,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23146 conditions, 4682 events. 2955/4682 cut-off events. For 14390/14390 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26389 event pairs, 1048 based on Foata normal form. 14/4660 useless extension candidates. Maximal degree in co-relation 23122. Up to 4349 conditions per place. [2023-08-27 10:20:36,506 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 102 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2023-08-27 10:20:36,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 1013 flow [2023-08-27 10:20:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:20:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:20:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 495 transitions. [2023-08-27 10:20:36,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43805309734513276 [2023-08-27 10:20:36,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 495 transitions. [2023-08-27 10:20:36,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 495 transitions. [2023-08-27 10:20:36,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:36,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 495 transitions. [2023-08-27 10:20:36,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:36,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:36,512 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:36,512 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 546 flow. Second operand 5 states and 495 transitions. [2023-08-27 10:20:36,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 1013 flow [2023-08-27 10:20:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 991 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:36,523 INFO L231 Difference]: Finished difference. Result has 64 places, 82 transitions, 622 flow [2023-08-27 10:20:36,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=622, PETRI_PLACES=64, PETRI_TRANSITIONS=82} [2023-08-27 10:20:36,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-27 10:20:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 82 transitions, 622 flow [2023-08-27 10:20:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:36,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:36,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:20:36,525 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:36,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -400958462, now seen corresponding path program 1 times [2023-08-27 10:20:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088299968] [2023-08-27 10:20:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:37,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088299968] [2023-08-27 10:20:37,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088299968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:37,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:37,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 10:20:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547862886] [2023-08-27 10:20:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:37,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 10:20:37,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 10:20:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 10:20:37,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 226 [2023-08-27 10:20:37,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 82 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:37,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:37,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 226 [2023-08-27 10:20:37,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:39,083 INFO L124 PetriNetUnfolderBase]: 4008/6390 cut-off events. [2023-08-27 10:20:39,083 INFO L125 PetriNetUnfolderBase]: For 18979/18979 co-relation queries the response was YES. [2023-08-27 10:20:39,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31092 conditions, 6390 events. 4008/6390 cut-off events. For 18979/18979 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 38896 event pairs, 540 based on Foata normal form. 45/6383 useless extension candidates. Maximal degree in co-relation 31066. Up to 3857 conditions per place. [2023-08-27 10:20:39,109 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 147 selfloop transitions, 61 changer transitions 3/212 dead transitions. [2023-08-27 10:20:39,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 212 transitions, 2014 flow [2023-08-27 10:20:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 10:20:39,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 10:20:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 804 transitions. [2023-08-27 10:20:39,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-27 10:20:39,112 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 804 transitions. [2023-08-27 10:20:39,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 804 transitions. [2023-08-27 10:20:39,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:39,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 804 transitions. [2023-08-27 10:20:39,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:39,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:39,118 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:39,118 INFO L175 Difference]: Start difference. First operand has 64 places, 82 transitions, 622 flow. Second operand 8 states and 804 transitions. [2023-08-27 10:20:39,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 212 transitions, 2014 flow [2023-08-27 10:20:39,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 212 transitions, 2001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:39,140 INFO L231 Difference]: Finished difference. Result has 74 places, 129 transitions, 1304 flow [2023-08-27 10:20:39,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1304, PETRI_PLACES=74, PETRI_TRANSITIONS=129} [2023-08-27 10:20:39,141 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-27 10:20:39,141 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 129 transitions, 1304 flow [2023-08-27 10:20:39,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:39,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:39,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:39,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:20:39,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:39,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1254352768, now seen corresponding path program 2 times [2023-08-27 10:20:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:39,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428709268] [2023-08-27 10:20:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:39,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428709268] [2023-08-27 10:20:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428709268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:39,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:20:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962840913] [2023-08-27 10:20:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:39,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 10:20:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:39,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 10:20:39,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 10:20:39,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 10:20:39,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 129 transitions, 1304 flow. Second operand has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:39,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:39,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 10:20:39,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:40,843 INFO L124 PetriNetUnfolderBase]: 5046/8154 cut-off events. [2023-08-27 10:20:40,843 INFO L125 PetriNetUnfolderBase]: For 39750/39750 co-relation queries the response was YES. [2023-08-27 10:20:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45395 conditions, 8154 events. 5046/8154 cut-off events. For 39750/39750 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 52931 event pairs, 622 based on Foata normal form. 79/8145 useless extension candidates. Maximal degree in co-relation 45364. Up to 4243 conditions per place. [2023-08-27 10:20:40,889 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 188 selfloop transitions, 47 changer transitions 3/239 dead transitions. [2023-08-27 10:20:40,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 239 transitions, 2754 flow [2023-08-27 10:20:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 10:20:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 10:20:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2023-08-27 10:20:40,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45298672566371684 [2023-08-27 10:20:40,892 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2023-08-27 10:20:40,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2023-08-27 10:20:40,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:40,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2023-08-27 10:20:40,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.375) internal successors, (819), 8 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:40,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:40,898 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:40,898 INFO L175 Difference]: Start difference. First operand has 74 places, 129 transitions, 1304 flow. Second operand 8 states and 819 transitions. [2023-08-27 10:20:40,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 239 transitions, 2754 flow [2023-08-27 10:20:40,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 239 transitions, 2736 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-27 10:20:40,963 INFO L231 Difference]: Finished difference. Result has 85 places, 151 transitions, 1758 flow [2023-08-27 10:20:40,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1758, PETRI_PLACES=85, PETRI_TRANSITIONS=151} [2023-08-27 10:20:40,964 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-27 10:20:40,964 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 1758 flow [2023-08-27 10:20:40,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:40,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:40,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:40,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:20:40,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:40,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash 953558812, now seen corresponding path program 3 times [2023-08-27 10:20:40,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:40,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086708334] [2023-08-27 10:20:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086708334] [2023-08-27 10:20:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086708334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:41,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:41,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:20:41,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485087985] [2023-08-27 10:20:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:41,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:20:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:41,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:20:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:20:41,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 10:20:41,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 151 transitions, 1758 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:41,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:41,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 10:20:41,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:42,086 INFO L124 PetriNetUnfolderBase]: 3591/6013 cut-off events. [2023-08-27 10:20:42,086 INFO L125 PetriNetUnfolderBase]: For 61506/61506 co-relation queries the response was YES. [2023-08-27 10:20:42,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37556 conditions, 6013 events. 3591/6013 cut-off events. For 61506/61506 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39111 event pairs, 770 based on Foata normal form. 376/6286 useless extension candidates. Maximal degree in co-relation 37519. Up to 2781 conditions per place. [2023-08-27 10:20:42,124 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 249 selfloop transitions, 14 changer transitions 0/264 dead transitions. [2023-08-27 10:20:42,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 264 transitions, 3644 flow [2023-08-27 10:20:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2023-08-27 10:20:42,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609144542772861 [2023-08-27 10:20:42,126 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2023-08-27 10:20:42,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2023-08-27 10:20:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:42,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2023-08-27 10:20:42,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:42,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:42,131 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:42,131 INFO L175 Difference]: Start difference. First operand has 85 places, 151 transitions, 1758 flow. Second operand 6 states and 625 transitions. [2023-08-27 10:20:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 264 transitions, 3644 flow [2023-08-27 10:20:42,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 264 transitions, 3509 flow, removed 51 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:42,220 INFO L231 Difference]: Finished difference. Result has 89 places, 141 transitions, 1604 flow [2023-08-27 10:20:42,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1604, PETRI_PLACES=89, PETRI_TRANSITIONS=141} [2023-08-27 10:20:42,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2023-08-27 10:20:42,220 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 141 transitions, 1604 flow [2023-08-27 10:20:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:42,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:42,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:42,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:20:42,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:42,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 505644869, now seen corresponding path program 1 times [2023-08-27 10:20:42,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:42,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624599825] [2023-08-27 10:20:42,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:42,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:43,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:43,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624599825] [2023-08-27 10:20:43,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624599825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:43,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:43,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 10:20:43,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931258862] [2023-08-27 10:20:43,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:43,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 10:20:43,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 10:20:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 10:20:43,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 10:20:43,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 141 transitions, 1604 flow. Second operand has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:43,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:43,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 10:20:43,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:44,440 INFO L124 PetriNetUnfolderBase]: 4056/6837 cut-off events. [2023-08-27 10:20:44,440 INFO L125 PetriNetUnfolderBase]: For 61654/61654 co-relation queries the response was YES. [2023-08-27 10:20:44,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44706 conditions, 6837 events. 4056/6837 cut-off events. For 61654/61654 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 45492 event pairs, 667 based on Foata normal form. 15/6851 useless extension candidates. Maximal degree in co-relation 44667. Up to 4106 conditions per place. [2023-08-27 10:20:44,477 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 153 selfloop transitions, 57 changer transitions 3/214 dead transitions. [2023-08-27 10:20:44,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 214 transitions, 2787 flow [2023-08-27 10:20:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:44,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:44,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2023-08-27 10:20:44,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564896755162242 [2023-08-27 10:20:44,478 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2023-08-27 10:20:44,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2023-08-27 10:20:44,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:44,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2023-08-27 10:20:44,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,482 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,483 INFO L175 Difference]: Start difference. First operand has 89 places, 141 transitions, 1604 flow. Second operand 6 states and 619 transitions. [2023-08-27 10:20:44,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 214 transitions, 2787 flow [2023-08-27 10:20:44,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 214 transitions, 2744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:20:44,574 INFO L231 Difference]: Finished difference. Result has 94 places, 150 transitions, 1921 flow [2023-08-27 10:20:44,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1921, PETRI_PLACES=94, PETRI_TRANSITIONS=150} [2023-08-27 10:20:44,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2023-08-27 10:20:44,574 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 150 transitions, 1921 flow [2023-08-27 10:20:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:44,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:44,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:20:44,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:44,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1907839605, now seen corresponding path program 2 times [2023-08-27 10:20:44,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:44,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572318844] [2023-08-27 10:20:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:44,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:45,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572318844] [2023-08-27 10:20:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572318844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 10:20:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410713248] [2023-08-27 10:20:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 10:20:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 10:20:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 10:20:45,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 10:20:45,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 150 transitions, 1921 flow. Second operand has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:45,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:45,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 10:20:45,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:47,843 INFO L124 PetriNetUnfolderBase]: 6257/10929 cut-off events. [2023-08-27 10:20:47,844 INFO L125 PetriNetUnfolderBase]: For 100455/100455 co-relation queries the response was YES. [2023-08-27 10:20:47,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72461 conditions, 10929 events. 6257/10929 cut-off events. For 100455/100455 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 82938 event pairs, 257 based on Foata normal form. 19/10948 useless extension candidates. Maximal degree in co-relation 72419. Up to 5053 conditions per place. [2023-08-27 10:20:47,968 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 208 selfloop transitions, 99 changer transitions 6/314 dead transitions. [2023-08-27 10:20:47,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 314 transitions, 4391 flow [2023-08-27 10:20:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 10:20:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 10:20:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2023-08-27 10:20:47,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488692232055064 [2023-08-27 10:20:47,971 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 913 transitions. [2023-08-27 10:20:47,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 913 transitions. [2023-08-27 10:20:47,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:47,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 913 transitions. [2023-08-27 10:20:47,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.44444444444444) internal successors, (913), 9 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:47,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:47,977 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:47,977 INFO L175 Difference]: Start difference. First operand has 94 places, 150 transitions, 1921 flow. Second operand 9 states and 913 transitions. [2023-08-27 10:20:47,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 314 transitions, 4391 flow [2023-08-27 10:20:48,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 314 transitions, 4279 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:48,318 INFO L231 Difference]: Finished difference. Result has 103 places, 213 transitions, 3240 flow [2023-08-27 10:20:48,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3240, PETRI_PLACES=103, PETRI_TRANSITIONS=213} [2023-08-27 10:20:48,319 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-08-27 10:20:48,319 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 213 transitions, 3240 flow [2023-08-27 10:20:48,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:48,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:48,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:48,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 10:20:48,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:48,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1688775431, now seen corresponding path program 3 times [2023-08-27 10:20:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253898977] [2023-08-27 10:20:48,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:48,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:49,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:49,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253898977] [2023-08-27 10:20:49,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253898977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:49,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 10:20:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807249330] [2023-08-27 10:20:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 10:20:49,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:49,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 10:20:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 10:20:49,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 10:20:49,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 213 transitions, 3240 flow. Second operand has 8 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:49,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:49,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 10:20:49,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:51,449 INFO L124 PetriNetUnfolderBase]: 6768/11839 cut-off events. [2023-08-27 10:20:51,449 INFO L125 PetriNetUnfolderBase]: For 156577/156577 co-relation queries the response was YES. [2023-08-27 10:20:51,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88354 conditions, 11839 events. 6768/11839 cut-off events. For 156577/156577 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 90896 event pairs, 1147 based on Foata normal form. 18/11855 useless extension candidates. Maximal degree in co-relation 88308. Up to 6480 conditions per place. [2023-08-27 10:20:51,540 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 237 selfloop transitions, 62 changer transitions 3/303 dead transitions. [2023-08-27 10:20:51,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 303 transitions, 4966 flow [2023-08-27 10:20:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2023-08-27 10:20:51,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45132743362831856 [2023-08-27 10:20:51,543 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2023-08-27 10:20:51,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2023-08-27 10:20:51,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:51,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2023-08-27 10:20:51,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:51,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:51,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:51,546 INFO L175 Difference]: Start difference. First operand has 103 places, 213 transitions, 3240 flow. Second operand 6 states and 612 transitions. [2023-08-27 10:20:51,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 303 transitions, 4966 flow [2023-08-27 10:20:51,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 303 transitions, 4519 flow, removed 223 selfloop flow, removed 1 redundant places. [2023-08-27 10:20:51,921 INFO L231 Difference]: Finished difference. Result has 109 places, 221 transitions, 3280 flow [2023-08-27 10:20:51,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3280, PETRI_PLACES=109, PETRI_TRANSITIONS=221} [2023-08-27 10:20:51,921 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-27 10:20:51,921 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 221 transitions, 3280 flow [2023-08-27 10:20:51,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:51,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:51,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 10:20:51,922 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:51,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:51,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469347, now seen corresponding path program 4 times [2023-08-27 10:20:51,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:51,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398471470] [2023-08-27 10:20:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398471470] [2023-08-27 10:20:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398471470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:53,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:53,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 10:20:53,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404855684] [2023-08-27 10:20:53,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:53,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 10:20:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 10:20:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 10:20:53,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-27 10:20:53,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 221 transitions, 3280 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:53,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:53,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-27 10:20:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:55,657 INFO L124 PetriNetUnfolderBase]: 7613/13416 cut-off events. [2023-08-27 10:20:55,658 INFO L125 PetriNetUnfolderBase]: For 146899/146899 co-relation queries the response was YES. [2023-08-27 10:20:55,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92821 conditions, 13416 events. 7613/13416 cut-off events. For 146899/146899 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 106493 event pairs, 1106 based on Foata normal form. 16/13432 useless extension candidates. Maximal degree in co-relation 92772. Up to 6373 conditions per place. [2023-08-27 10:20:55,746 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 272 selfloop transitions, 53 changer transitions 3/329 dead transitions. [2023-08-27 10:20:55,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 329 transitions, 5156 flow [2023-08-27 10:20:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2023-08-27 10:20:55,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410029498525074 [2023-08-27 10:20:55,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2023-08-27 10:20:55,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2023-08-27 10:20:55,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:55,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2023-08-27 10:20:55,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:55,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:55,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:55,751 INFO L175 Difference]: Start difference. First operand has 109 places, 221 transitions, 3280 flow. Second operand 6 states and 598 transitions. [2023-08-27 10:20:55,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 329 transitions, 5156 flow [2023-08-27 10:20:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 329 transitions, 5078 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 10:20:56,085 INFO L231 Difference]: Finished difference. Result has 113 places, 229 transitions, 3508 flow [2023-08-27 10:20:56,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3508, PETRI_PLACES=113, PETRI_TRANSITIONS=229} [2023-08-27 10:20:56,086 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-27 10:20:56,086 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 229 transitions, 3508 flow [2023-08-27 10:20:56,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:56,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 10:20:56,087 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:56,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1643390482, now seen corresponding path program 1 times [2023-08-27 10:20:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:56,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99333075] [2023-08-27 10:20:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:20:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:20:56,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:20:56,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99333075] [2023-08-27 10:20:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99333075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:20:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:20:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 10:20:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940482268] [2023-08-27 10:20:56,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:20:56,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:20:56,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:20:56,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:20:56,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:20:56,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 10:20:56,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 229 transitions, 3508 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:56,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:20:56,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 10:20:56,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:20:58,103 INFO L124 PetriNetUnfolderBase]: 7028/12042 cut-off events. [2023-08-27 10:20:58,103 INFO L125 PetriNetUnfolderBase]: For 164078/164078 co-relation queries the response was YES. [2023-08-27 10:20:58,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84489 conditions, 12042 events. 7028/12042 cut-off events. For 164078/164078 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 94356 event pairs, 1134 based on Foata normal form. 513/12554 useless extension candidates. Maximal degree in co-relation 84438. Up to 5267 conditions per place. [2023-08-27 10:20:58,178 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 252 selfloop transitions, 11 changer transitions 124/388 dead transitions. [2023-08-27 10:20:58,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 388 transitions, 6867 flow [2023-08-27 10:20:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 10:20:58,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 10:20:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-08-27 10:20:58,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469026548672566 [2023-08-27 10:20:58,181 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-08-27 10:20:58,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-08-27 10:20:58,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:20:58,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-08-27 10:20:58,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:58,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:58,185 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:58,185 INFO L175 Difference]: Start difference. First operand has 113 places, 229 transitions, 3508 flow. Second operand 6 states and 606 transitions. [2023-08-27 10:20:58,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 388 transitions, 6867 flow [2023-08-27 10:20:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 388 transitions, 6323 flow, removed 78 selfloop flow, removed 7 redundant places. [2023-08-27 10:20:58,528 INFO L231 Difference]: Finished difference. Result has 109 places, 148 transitions, 2106 flow [2023-08-27 10:20:58,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2106, PETRI_PLACES=109, PETRI_TRANSITIONS=148} [2023-08-27 10:20:58,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-27 10:20:58,529 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 148 transitions, 2106 flow [2023-08-27 10:20:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:20:58,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:20:58,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:20:58,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 10:20:58,530 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:20:58,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:20:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 785176123, now seen corresponding path program 1 times [2023-08-27 10:20:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:20:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208046438] [2023-08-27 10:20:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:20:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:20:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:21:00,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:00,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208046438] [2023-08-27 10:21:00,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208046438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:00,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:00,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 10:21:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747609270] [2023-08-27 10:21:00,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 10:21:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 10:21:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-27 10:21:00,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 226 [2023-08-27 10:21:00,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 148 transitions, 2106 flow. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:00,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:00,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 226 [2023-08-27 10:21:00,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:01,399 INFO L124 PetriNetUnfolderBase]: 1759/3430 cut-off events. [2023-08-27 10:21:01,399 INFO L125 PetriNetUnfolderBase]: For 44619/44619 co-relation queries the response was YES. [2023-08-27 10:21:01,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26371 conditions, 3430 events. 1759/3430 cut-off events. For 44619/44619 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24506 event pairs, 281 based on Foata normal form. 1/3430 useless extension candidates. Maximal degree in co-relation 26321. Up to 1722 conditions per place. [2023-08-27 10:21:01,421 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 124 selfloop transitions, 109 changer transitions 38/272 dead transitions. [2023-08-27 10:21:01,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 272 transitions, 4357 flow [2023-08-27 10:21:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 10:21:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 10:21:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2023-08-27 10:21:01,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154867256637168 [2023-08-27 10:21:01,427 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2023-08-27 10:21:01,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2023-08-27 10:21:01,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:01,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2023-08-27 10:21:01,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:01,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 226.0) internal successors, (2486), 11 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:01,433 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 226.0) internal successors, (2486), 11 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:01,433 INFO L175 Difference]: Start difference. First operand has 109 places, 148 transitions, 2106 flow. Second operand 10 states and 939 transitions. [2023-08-27 10:21:01,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 272 transitions, 4357 flow [2023-08-27 10:21:01,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 272 transitions, 3693 flow, removed 137 selfloop flow, removed 18 redundant places. [2023-08-27 10:21:01,541 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 3013 flow [2023-08-27 10:21:01,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3013, PETRI_PLACES=102, PETRI_TRANSITIONS=198} [2023-08-27 10:21:01,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-08-27 10:21:01,542 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 3013 flow [2023-08-27 10:21:01,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:01,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:01,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:01,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 10:21:01,543 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:21:01,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash -847336671, now seen corresponding path program 2 times [2023-08-27 10:21:01,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:01,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522905413] [2023-08-27 10:21:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:21:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522905413] [2023-08-27 10:21:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522905413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:02,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:02,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 10:21:02,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219708374] [2023-08-27 10:21:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 10:21:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 10:21:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 10:21:02,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-27 10:21:02,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 198 transitions, 3013 flow. Second operand has 10 states, 10 states have (on average 88.3) internal successors, (883), 10 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:02,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:02,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-27 10:21:02,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:03,630 INFO L124 PetriNetUnfolderBase]: 2173/4377 cut-off events. [2023-08-27 10:21:03,630 INFO L125 PetriNetUnfolderBase]: For 50582/50582 co-relation queries the response was YES. [2023-08-27 10:21:03,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29226 conditions, 4377 events. 2173/4377 cut-off events. For 50582/50582 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34040 event pairs, 306 based on Foata normal form. 4/4380 useless extension candidates. Maximal degree in co-relation 29183. Up to 1840 conditions per place. [2023-08-27 10:21:03,651 INFO L140 encePairwiseOnDemand]: 215/226 looper letters, 78 selfloop transitions, 80 changer transitions 151/310 dead transitions. [2023-08-27 10:21:03,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 310 transitions, 5019 flow [2023-08-27 10:21:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 10:21:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 10:21:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-08-27 10:21:03,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42201327433628316 [2023-08-27 10:21:03,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-08-27 10:21:03,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-08-27 10:21:03,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:03,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-08-27 10:21:03,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:03,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:03,658 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:03,658 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 3013 flow. Second operand 8 states and 763 transitions. [2023-08-27 10:21:03,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 310 transitions, 5019 flow [2023-08-27 10:21:03,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 310 transitions, 4684 flow, removed 148 selfloop flow, removed 2 redundant places. [2023-08-27 10:21:03,787 INFO L231 Difference]: Finished difference. Result has 111 places, 136 transitions, 2260 flow [2023-08-27 10:21:03,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=111, PETRI_TRANSITIONS=136} [2023-08-27 10:21:03,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-27 10:21:03,788 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 136 transitions, 2260 flow [2023-08-27 10:21:03,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.3) internal successors, (883), 10 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:03,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:03,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:03,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 10:21:03,788 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 10:21:03,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:03,789 INFO L85 PathProgramCache]: Analyzing trace with hash -656049273, now seen corresponding path program 3 times [2023-08-27 10:21:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:03,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357879337] [2023-08-27 10:21:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 10:21:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357879337] [2023-08-27 10:21:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357879337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:03,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:21:03,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181924971] [2023-08-27 10:21:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:03,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:21:03,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:21:03,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:21:03,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 226 [2023-08-27 10:21:03,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 136 transitions, 2260 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:03,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:03,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 226 [2023-08-27 10:21:03,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:04,126 INFO L124 PetriNetUnfolderBase]: 480/961 cut-off events. [2023-08-27 10:21:04,126 INFO L125 PetriNetUnfolderBase]: For 15951/15951 co-relation queries the response was YES. [2023-08-27 10:21:04,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 961 events. 480/961 cut-off events. For 15951/15951 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5242 event pairs, 82 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7199. Up to 690 conditions per place. [2023-08-27 10:21:04,129 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-27 10:21:04,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 149 transitions, 2702 flow [2023-08-27 10:21:04,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:21:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:21:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-27 10:21:04,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502212389380531 [2023-08-27 10:21:04,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-27 10:21:04,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-27 10:21:04,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:04,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-27 10:21:04,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:04,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:04,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:04,135 INFO L175 Difference]: Start difference. First operand has 111 places, 136 transitions, 2260 flow. Second operand 4 states and 407 transitions. [2023-08-27 10:21:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 149 transitions, 2702 flow [2023-08-27 10:21:04,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 2274 flow, removed 87 selfloop flow, removed 22 redundant places. [2023-08-27 10:21:04,160 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2023-08-27 10:21:04,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2023-08-27 10:21:04,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-27 10:21:04,160 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2023-08-27 10:21:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 10:21:04,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-27 10:21:04,163 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (2 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 10:21:04,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 10:21:04,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 10:21:04,165 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:04,169 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:21:04,169 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:21:04,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:21:04 BasicIcfg [2023-08-27 10:21:04,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:21:04,172 INFO L158 Benchmark]: Toolchain (without parser) took 46117.06ms. Allocated memory was 358.6MB in the beginning and 2.9GB in the end (delta: 2.5GB). Free memory was 333.5MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-27 10:21:04,172 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 358.6MB. Free memory is still 336.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:21:04,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.35ms. Allocated memory is still 358.6MB. Free memory was 333.5MB in the beginning and 306.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 10:21:04,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.02ms. Allocated memory is still 358.6MB. Free memory was 306.2MB in the beginning and 302.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 10:21:04,172 INFO L158 Benchmark]: Boogie Preprocessor took 67.09ms. Allocated memory is still 358.6MB. Free memory was 302.5MB in the beginning and 300.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:21:04,173 INFO L158 Benchmark]: RCFGBuilder took 911.62ms. Allocated memory was 358.6MB in the beginning and 436.2MB in the end (delta: 77.6MB). Free memory was 300.0MB in the beginning and 394.0MB in the end (delta: -94.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. [2023-08-27 10:21:04,173 INFO L158 Benchmark]: TraceAbstraction took 44498.99ms. Allocated memory was 436.2MB in the beginning and 2.9GB in the end (delta: 2.4GB). Free memory was 394.0MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-08-27 10:21:04,174 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 358.6MB. Free memory is still 336.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 574.35ms. Allocated memory is still 358.6MB. Free memory was 333.5MB in the beginning and 306.2MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.02ms. Allocated memory is still 358.6MB. Free memory was 306.2MB in the beginning and 302.5MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 67.09ms. Allocated memory is still 358.6MB. Free memory was 302.5MB in the beginning and 300.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 911.62ms. Allocated memory was 358.6MB in the beginning and 436.2MB in the end (delta: 77.6MB). Free memory was 300.0MB in the beginning and 394.0MB in the end (delta: -94.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. * TraceAbstraction took 44498.99ms. Allocated memory was 436.2MB in the beginning and 2.9GB in the end (delta: 2.4GB). Free memory was 394.0MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.7GB. 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: 4.7s, 126 PlacesBefore, 42 PlacesAfterwards, 119 TransitionsBefore, 32 TransitionsAfterwards, 3106 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 104 TotalNumberOfCompositions, 11681 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3696, independent: 3379, independent conditional: 0, independent unconditional: 3379, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1603, independent: 1540, independent conditional: 0, independent unconditional: 1540, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3696, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 1603, unknown conditional: 0, unknown unconditional: 1603] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 804]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 804]: 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 - PositiveResult [Line: 853]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 853]: 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, 157 locations, 18 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: 44.4s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 25.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 886 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 886 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 494 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3540 IncrementalHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 494 mSolverCounterUnsat, 6 mSDtfsCounter, 3540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3508occurred in iteration=16, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 3276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:21:04,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...