/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:30:21,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:30:21,931 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:30:21,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:30:21,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:30:21,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:30:21,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:30:21,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:30:21,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:30:22,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:30:22,000 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:30:22,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:30:22,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:30:22,002 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:30:22,002 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:30:22,002 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:30:22,003 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:30:22,003 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:30:22,003 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:30:22,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:30:22,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:30:22,004 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:30:22,004 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:30:22,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:30:22,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:30:22,005 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:30:22,005 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:30:22,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:22,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:30:22,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:30:22,007 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:30:22,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:30:22,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:30:22,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:30:22,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:30:22,357 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:30:22,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-26 21:30:23,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:30:23,906 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:30:23,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-26 21:30:23,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd89f29a3/d675fa8a31ef4a09a005c311ea5cbfe6/FLAGebc4fda94 [2023-08-26 21:30:23,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd89f29a3/d675fa8a31ef4a09a005c311ea5cbfe6 [2023-08-26 21:30:23,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:30:23,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:30:23,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:23,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:30:23,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:30:23,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:23" (1/1) ... [2023-08-26 21:30:23,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce7c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:23, skipping insertion in model container [2023-08-26 21:30:23,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:30:23" (1/1) ... [2023-08-26 21:30:24,013 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:30:24,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:24,439 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:30:24,455 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:30:24,457 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:30:24,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:30:24,535 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:24,535 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:30:24,540 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:30:24,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24 WrapperNode [2023-08-26 21:30:24,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:30:24,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:24,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:30:24,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:30:24,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,600 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 181 [2023-08-26 21:30:24,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:30:24,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:30:24,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:30:24,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:30:24,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,625 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:30:24,638 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:30:24,638 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:30:24,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:30:24,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (1/1) ... [2023-08-26 21:30:24,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:30:24,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:30:24,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:30:24,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:30:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:30:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:30:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:30:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:30:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:30:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:30:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:30:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:30:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:30:24,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:30:24,715 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:30:24,836 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:30:24,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:30:25,269 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:30:25,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:30:25,399 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:30:25,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:25 BoogieIcfgContainer [2023-08-26 21:30:25,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:30:25,403 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:30:25,403 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:30:25,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:30:25,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:30:23" (1/3) ... [2023-08-26 21:30:25,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:25, skipping insertion in model container [2023-08-26 21:30:25,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:30:24" (2/3) ... [2023-08-26 21:30:25,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a9b15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:30:25, skipping insertion in model container [2023-08-26 21:30:25,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:30:25" (3/3) ... [2023-08-26 21:30:25,408 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-26 21:30:25,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:30:25,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-26 21:30:25,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:30:25,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:30:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 259 flow [2023-08-26 21:30:25,603 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-26 21:30:25,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:25,609 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. [2023-08-26 21:30:25,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 122 transitions, 259 flow [2023-08-26 21:30:25,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 119 transitions, 247 flow [2023-08-26 21:30:25,617 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:30:25,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-26 21:30:25,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-26 21:30:25,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 119 transitions, 247 flow [2023-08-26 21:30:25,683 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-26 21:30:25,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:25,685 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. [2023-08-26 21:30:25,687 INFO L119 LiptonReduction]: Number of co-enabled transitions 3106 [2023-08-26 21:30:30,388 INFO L134 LiptonReduction]: Checked pairs total: 11681 [2023-08-26 21:30:30,389 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-26 21:30:30,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:30:30,408 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;@6749d7c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:30:30,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 21:30:30,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:30:30,415 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-26 21:30:30,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:30:30,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:30,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:30,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:30,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash -330897229, now seen corresponding path program 1 times [2023-08-26 21:30:30,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:30,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515873454] [2023-08-26 21:30:30,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:30,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515873454] [2023-08-26 21:30:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515873454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:30,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:30,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:30,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337375847] [2023-08-26 21:30:30,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:30,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:30,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-26 21:30:30,798 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) [2023-08-26 21:30:30,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:30,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-26 21:30:30,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:31,645 INFO L124 PetriNetUnfolderBase]: 3192/4713 cut-off events. [2023-08-26 21:30:31,645 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-26 21:30:31,656 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. [2023-08-26 21:30:31,683 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 50 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-26 21:30:31,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 233 flow [2023-08-26 21:30:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-26 21:30:31,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49557522123893805 [2023-08-26 21:30:31,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-26 21:30:31,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-26 21:30:31,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:31,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-26 21:30:31,701 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) [2023-08-26 21:30:31,704 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) [2023-08-26 21:30:31,705 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) [2023-08-26 21:30:31,707 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 336 transitions. [2023-08-26 21:30:31,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 233 flow [2023-08-26 21:30:31,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:31,711 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 106 flow [2023-08-26 21:30:31,713 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} [2023-08-26 21:30:31,716 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-26 21:30:31,716 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 106 flow [2023-08-26 21:30:31,716 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) [2023-08-26 21:30:31,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:31,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:31,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:30:31,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:31,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:31,718 INFO L85 PathProgramCache]: Analyzing trace with hash -273444834, now seen corresponding path program 1 times [2023-08-26 21:30:31,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:31,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114199946] [2023-08-26 21:30:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:31,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:31,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114199946] [2023-08-26 21:30:31,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114199946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:31,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:31,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431954182] [2023-08-26 21:30:31,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:31,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:31,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:31,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-26 21:30:31,944 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) [2023-08-26 21:30:31,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:31,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-26 21:30:31,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:32,589 INFO L124 PetriNetUnfolderBase]: 2525/3834 cut-off events. [2023-08-26 21:30:32,590 INFO L125 PetriNetUnfolderBase]: For 285/317 co-relation queries the response was YES. [2023-08-26 21:30:32,595 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. [2023-08-26 21:30:32,613 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 45 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-26 21:30:32,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 246 flow [2023-08-26 21:30:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-26 21:30:32,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882005899705015 [2023-08-26 21:30:32,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-26 21:30:32,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-26 21:30:32,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:32,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-26 21:30:32,622 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) [2023-08-26 21:30:32,625 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) [2023-08-26 21:30:32,626 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) [2023-08-26 21:30:32,626 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 106 flow. Second operand 3 states and 331 transitions. [2023-08-26 21:30:32,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 246 flow [2023-08-26 21:30:32,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:32,634 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 104 flow [2023-08-26 21:30:32,634 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} [2023-08-26 21:30:32,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-26 21:30:32,635 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 104 flow [2023-08-26 21:30:32,636 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) [2023-08-26 21:30:32,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:32,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:32,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:30:32,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:32,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:32,647 INFO L85 PathProgramCache]: Analyzing trace with hash -787450195, now seen corresponding path program 1 times [2023-08-26 21:30:32,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:32,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090577695] [2023-08-26 21:30:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:32,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:32,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090577695] [2023-08-26 21:30:32,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090577695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:32,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:32,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:30:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996899063] [2023-08-26 21:30:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:30:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:30:32,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:30:32,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-26 21:30:32,875 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) [2023-08-26 21:30:32,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:32,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-26 21:30:32,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:33,386 INFO L124 PetriNetUnfolderBase]: 2270/3475 cut-off events. [2023-08-26 21:30:33,386 INFO L125 PetriNetUnfolderBase]: For 378/391 co-relation queries the response was YES. [2023-08-26 21:30:33,392 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. [2023-08-26 21:30:33,407 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 44 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-26 21:30:33,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 240 flow [2023-08-26 21:30:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:30:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:30:33,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-26 21:30:33,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48672566371681414 [2023-08-26 21:30:33,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-26 21:30:33,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-26 21:30:33,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:33,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-26 21:30:33,410 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) [2023-08-26 21:30:33,411 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) [2023-08-26 21:30:33,412 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) [2023-08-26 21:30:33,412 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 104 flow. Second operand 3 states and 330 transitions. [2023-08-26 21:30:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 240 flow [2023-08-26 21:30:33,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:33,414 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 108 flow [2023-08-26 21:30:33,414 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} [2023-08-26 21:30:33,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-26 21:30:33,415 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 108 flow [2023-08-26 21:30:33,415 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) [2023-08-26 21:30:33,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:33,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:30:33,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:33,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash 127584676, now seen corresponding path program 1 times [2023-08-26 21:30:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340851478] [2023-08-26 21:30:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340851478] [2023-08-26 21:30:34,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340851478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:34,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:34,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:34,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013276376] [2023-08-26 21:30:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:34,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-26 21:30:34,320 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) [2023-08-26 21:30:34,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:34,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-26 21:30:34,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:35,653 INFO L124 PetriNetUnfolderBase]: 4656/7090 cut-off events. [2023-08-26 21:30:35,653 INFO L125 PetriNetUnfolderBase]: For 922/982 co-relation queries the response was YES. [2023-08-26 21:30:35,664 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. [2023-08-26 21:30:35,694 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 92 selfloop transitions, 28 changer transitions 0/124 dead transitions. [2023-08-26 21:30:35,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 124 transitions, 602 flow [2023-08-26 21:30:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:30:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:30:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 730 transitions. [2023-08-26 21:30:35,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461441213653603 [2023-08-26 21:30:35,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 730 transitions. [2023-08-26 21:30:35,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 730 transitions. [2023-08-26 21:30:35,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:35,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 730 transitions. [2023-08-26 21:30:35,700 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) [2023-08-26 21:30:35,702 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) [2023-08-26 21:30:35,703 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) [2023-08-26 21:30:35,703 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 108 flow. Second operand 7 states and 730 transitions. [2023-08-26 21:30:35,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 124 transitions, 602 flow [2023-08-26 21:30:35,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 124 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:35,724 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 306 flow [2023-08-26 21:30:35,724 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} [2023-08-26 21:30:35,725 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-26 21:30:35,726 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 306 flow [2023-08-26 21:30:35,726 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) [2023-08-26 21:30:35,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:35,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:35,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:30:35,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:35,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash 124401286, now seen corresponding path program 2 times [2023-08-26 21:30:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69791700] [2023-08-26 21:30:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:36,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:36,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69791700] [2023-08-26 21:30:36,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69791700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:36,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:36,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218592368] [2023-08-26 21:30:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:36,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:36,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-26 21:30:36,648 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) [2023-08-26 21:30:36,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-26 21:30:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:37,939 INFO L124 PetriNetUnfolderBase]: 5217/7896 cut-off events. [2023-08-26 21:30:37,939 INFO L125 PetriNetUnfolderBase]: For 9905/9978 co-relation queries the response was YES. [2023-08-26 21:30:37,952 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. [2023-08-26 21:30:37,987 INFO L140 encePairwiseOnDemand]: 213/226 looper letters, 72 selfloop transitions, 32 changer transitions 0/108 dead transitions. [2023-08-26 21:30:37,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 753 flow [2023-08-26 21:30:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-08-26 21:30:37,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-26 21:30:37,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-08-26 21:30:37,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-08-26 21:30:37,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:37,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-08-26 21:30:37,992 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) [2023-08-26 21:30:37,994 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) [2023-08-26 21:30:37,995 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) [2023-08-26 21:30:37,995 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 306 flow. Second operand 6 states and 603 transitions. [2023-08-26 21:30:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 753 flow [2023-08-26 21:30:38,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:38,005 INFO L231 Difference]: Finished difference. Result has 57 places, 76 transitions, 519 flow [2023-08-26 21:30:38,006 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} [2023-08-26 21:30:38,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-26 21:30:38,006 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 519 flow [2023-08-26 21:30:38,007 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) [2023-08-26 21:30:38,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:38,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:30:38,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:38,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash -438586518, now seen corresponding path program 1 times [2023-08-26 21:30:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:38,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023896358] [2023-08-26 21:30:38,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:38,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:38,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:38,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023896358] [2023-08-26 21:30:38,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023896358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:38,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:38,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:30:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997362746] [2023-08-26 21:30:38,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:38,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:38,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:38,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:38,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-26 21:30:38,184 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) [2023-08-26 21:30:38,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:38,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-26 21:30:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:39,053 INFO L124 PetriNetUnfolderBase]: 4221/6736 cut-off events. [2023-08-26 21:30:39,053 INFO L125 PetriNetUnfolderBase]: For 14866/14866 co-relation queries the response was YES. [2023-08-26 21:30:39,069 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. [2023-08-26 21:30:39,104 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 161 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-26 21:30:39,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 167 transitions, 1504 flow [2023-08-26 21:30:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2023-08-26 21:30:39,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47676991150442477 [2023-08-26 21:30:39,106 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2023-08-26 21:30:39,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2023-08-26 21:30:39,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:39,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2023-08-26 21:30:39,108 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) [2023-08-26 21:30:39,109 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) [2023-08-26 21:30:39,110 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) [2023-08-26 21:30:39,110 INFO L175 Difference]: Start difference. First operand has 57 places, 76 transitions, 519 flow. Second operand 4 states and 431 transitions. [2023-08-26 21:30:39,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 167 transitions, 1504 flow [2023-08-26 21:30:39,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 167 transitions, 1456 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:39,126 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 517 flow [2023-08-26 21:30:39,126 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} [2023-08-26 21:30:39,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-26 21:30:39,127 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 517 flow [2023-08-26 21:30:39,127 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) [2023-08-26 21:30:39,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:39,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:39,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:30:39,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:39,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -939585923, now seen corresponding path program 1 times [2023-08-26 21:30:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845782160] [2023-08-26 21:30:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845782160] [2023-08-26 21:30:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845782160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:39,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:39,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743469729] [2023-08-26 21:30:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:39,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-26 21:30:39,225 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) [2023-08-26 21:30:39,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:39,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-26 21:30:39,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:39,965 INFO L124 PetriNetUnfolderBase]: 3429/5443 cut-off events. [2023-08-26 21:30:39,965 INFO L125 PetriNetUnfolderBase]: For 15503/15503 co-relation queries the response was YES. [2023-08-26 21:30:39,977 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. [2023-08-26 21:30:40,002 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 114 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-26 21:30:40,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 1073 flow [2023-08-26 21:30:40,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:40,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2023-08-26 21:30:40,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461283185840708 [2023-08-26 21:30:40,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2023-08-26 21:30:40,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2023-08-26 21:30:40,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:40,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2023-08-26 21:30:40,007 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) [2023-08-26 21:30:40,008 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) [2023-08-26 21:30:40,008 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) [2023-08-26 21:30:40,009 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 517 flow. Second operand 4 states and 417 transitions. [2023-08-26 21:30:40,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 1073 flow [2023-08-26 21:30:40,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 1067 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:40,019 INFO L231 Difference]: Finished difference. Result has 58 places, 73 transitions, 507 flow [2023-08-26 21:30:40,019 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} [2023-08-26 21:30:40,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-26 21:30:40,020 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 73 transitions, 507 flow [2023-08-26 21:30:40,021 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) [2023-08-26 21:30:40,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:40,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:40,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:30:40,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:40,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -72818622, now seen corresponding path program 1 times [2023-08-26 21:30:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:40,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886487105] [2023-08-26 21:30:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:40,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:40,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886487105] [2023-08-26 21:30:40,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886487105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:40,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:40,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:30:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053032380] [2023-08-26 21:30:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:30:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:30:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:30:40,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-26 21:30:40,083 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) [2023-08-26 21:30:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-26 21:30:40,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:40,752 INFO L124 PetriNetUnfolderBase]: 2781/4401 cut-off events. [2023-08-26 21:30:40,752 INFO L125 PetriNetUnfolderBase]: For 12272/12272 co-relation queries the response was YES. [2023-08-26 21:30:40,759 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. [2023-08-26 21:30:40,777 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 142 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2023-08-26 21:30:40,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 150 transitions, 1352 flow [2023-08-26 21:30:40,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:30:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:30:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 437 transitions. [2023-08-26 21:30:40,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834070796460177 [2023-08-26 21:30:40,779 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 437 transitions. [2023-08-26 21:30:40,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 437 transitions. [2023-08-26 21:30:40,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:40,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 437 transitions. [2023-08-26 21:30:40,780 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) [2023-08-26 21:30:40,782 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) [2023-08-26 21:30:40,782 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) [2023-08-26 21:30:40,782 INFO L175 Difference]: Start difference. First operand has 58 places, 73 transitions, 507 flow. Second operand 4 states and 437 transitions. [2023-08-26 21:30:40,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 150 transitions, 1352 flow [2023-08-26 21:30:40,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 150 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:40,791 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 546 flow [2023-08-26 21:30:40,791 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} [2023-08-26 21:30:40,792 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-26 21:30:40,792 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 546 flow [2023-08-26 21:30:40,792 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) [2023-08-26 21:30:40,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:40,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:30:40,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:40,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 307854672, now seen corresponding path program 1 times [2023-08-26 21:30:40,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184012679] [2023-08-26 21:30:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184012679] [2023-08-26 21:30:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184012679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329782242] [2023-08-26 21:30:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:41,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:41,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-26 21:30:41,672 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) [2023-08-26 21:30:41,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:41,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-26 21:30:41,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:42,298 INFO L124 PetriNetUnfolderBase]: 2955/4682 cut-off events. [2023-08-26 21:30:42,298 INFO L125 PetriNetUnfolderBase]: For 14390/14390 co-relation queries the response was YES. [2023-08-26 21:30:42,307 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. [2023-08-26 21:30:42,329 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 102 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2023-08-26 21:30:42,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 1013 flow [2023-08-26 21:30:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:30:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:30:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 495 transitions. [2023-08-26 21:30:42,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43805309734513276 [2023-08-26 21:30:42,332 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 495 transitions. [2023-08-26 21:30:42,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 495 transitions. [2023-08-26 21:30:42,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:42,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 495 transitions. [2023-08-26 21:30:42,333 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) [2023-08-26 21:30:42,335 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) [2023-08-26 21:30:42,335 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) [2023-08-26 21:30:42,335 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 546 flow. Second operand 5 states and 495 transitions. [2023-08-26 21:30:42,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 1013 flow [2023-08-26 21:30:42,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 991 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:42,347 INFO L231 Difference]: Finished difference. Result has 64 places, 82 transitions, 622 flow [2023-08-26 21:30:42,347 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} [2023-08-26 21:30:42,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-26 21:30:42,348 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 82 transitions, 622 flow [2023-08-26 21:30:42,348 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) [2023-08-26 21:30:42,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:42,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:42,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:30:42,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:42,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash -400958462, now seen corresponding path program 1 times [2023-08-26 21:30:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609481574] [2023-08-26 21:30:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:43,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609481574] [2023-08-26 21:30:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609481574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:43,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-26 21:30:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181397993] [2023-08-26 21:30:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:43,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 21:30:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 21:30:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-26 21:30:43,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 226 [2023-08-26 21:30:43,676 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) [2023-08-26 21:30:43,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:43,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 226 [2023-08-26 21:30:43,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:44,841 INFO L124 PetriNetUnfolderBase]: 4008/6390 cut-off events. [2023-08-26 21:30:44,841 INFO L125 PetriNetUnfolderBase]: For 18979/18979 co-relation queries the response was YES. [2023-08-26 21:30:44,854 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. [2023-08-26 21:30:44,879 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 147 selfloop transitions, 61 changer transitions 3/212 dead transitions. [2023-08-26 21:30:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 212 transitions, 2014 flow [2023-08-26 21:30:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:30:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:30:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 804 transitions. [2023-08-26 21:30:44,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-26 21:30:44,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 804 transitions. [2023-08-26 21:30:44,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 804 transitions. [2023-08-26 21:30:44,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:44,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 804 transitions. [2023-08-26 21:30:44,891 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) [2023-08-26 21:30:44,894 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) [2023-08-26 21:30:44,894 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) [2023-08-26 21:30:44,894 INFO L175 Difference]: Start difference. First operand has 64 places, 82 transitions, 622 flow. Second operand 8 states and 804 transitions. [2023-08-26 21:30:44,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 212 transitions, 2014 flow [2023-08-26 21:30:44,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 212 transitions, 2001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:44,917 INFO L231 Difference]: Finished difference. Result has 74 places, 129 transitions, 1304 flow [2023-08-26 21:30:44,918 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} [2023-08-26 21:30:44,919 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-26 21:30:44,919 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 129 transitions, 1304 flow [2023-08-26 21:30:44,919 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) [2023-08-26 21:30:44,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:44,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:30:44,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:44,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1254352768, now seen corresponding path program 2 times [2023-08-26 21:30:44,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:44,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228303889] [2023-08-26 21:30:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228303889] [2023-08-26 21:30:45,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228303889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:45,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:45,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:30:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161348205] [2023-08-26 21:30:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:45,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 21:30:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:45,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 21:30:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-26 21:30:45,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-26 21:30:45,317 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) [2023-08-26 21:30:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-26 21:30:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:46,695 INFO L124 PetriNetUnfolderBase]: 5046/8154 cut-off events. [2023-08-26 21:30:46,695 INFO L125 PetriNetUnfolderBase]: For 39750/39750 co-relation queries the response was YES. [2023-08-26 21:30:46,723 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. [2023-08-26 21:30:46,761 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 188 selfloop transitions, 47 changer transitions 3/239 dead transitions. [2023-08-26 21:30:46,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 239 transitions, 2754 flow [2023-08-26 21:30:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:30:46,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:30:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2023-08-26 21:30:46,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45298672566371684 [2023-08-26 21:30:46,764 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2023-08-26 21:30:46,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2023-08-26 21:30:46,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:46,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2023-08-26 21:30:46,767 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) [2023-08-26 21:30:46,769 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) [2023-08-26 21:30:46,770 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) [2023-08-26 21:30:46,770 INFO L175 Difference]: Start difference. First operand has 74 places, 129 transitions, 1304 flow. Second operand 8 states and 819 transitions. [2023-08-26 21:30:46,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 239 transitions, 2754 flow [2023-08-26 21:30:46,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 239 transitions, 2736 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-26 21:30:46,841 INFO L231 Difference]: Finished difference. Result has 85 places, 151 transitions, 1758 flow [2023-08-26 21:30:46,842 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} [2023-08-26 21:30:46,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-26 21:30:46,842 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 1758 flow [2023-08-26 21:30:46,843 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) [2023-08-26 21:30:46,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:46,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:46,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:30:46,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:46,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash 953558812, now seen corresponding path program 3 times [2023-08-26 21:30:46,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:46,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182326714] [2023-08-26 21:30:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:46,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:47,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:47,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182326714] [2023-08-26 21:30:47,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182326714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:47,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:47,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:30:47,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271761438] [2023-08-26 21:30:47,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:47,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:30:47,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:47,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:30:47,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:30:47,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-26 21:30:47,038 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) [2023-08-26 21:30:47,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:47,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-26 21:30:47,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:47,969 INFO L124 PetriNetUnfolderBase]: 3591/6013 cut-off events. [2023-08-26 21:30:47,969 INFO L125 PetriNetUnfolderBase]: For 61506/61506 co-relation queries the response was YES. [2023-08-26 21:30:47,988 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. [2023-08-26 21:30:48,017 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 249 selfloop transitions, 14 changer transitions 0/264 dead transitions. [2023-08-26 21:30:48,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 264 transitions, 3644 flow [2023-08-26 21:30:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2023-08-26 21:30:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609144542772861 [2023-08-26 21:30:48,020 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2023-08-26 21:30:48,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2023-08-26 21:30:48,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:48,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2023-08-26 21:30:48,022 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) [2023-08-26 21:30:48,024 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) [2023-08-26 21:30:48,024 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) [2023-08-26 21:30:48,024 INFO L175 Difference]: Start difference. First operand has 85 places, 151 transitions, 1758 flow. Second operand 6 states and 625 transitions. [2023-08-26 21:30:48,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 264 transitions, 3644 flow [2023-08-26 21:30:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 264 transitions, 3509 flow, removed 51 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:48,126 INFO L231 Difference]: Finished difference. Result has 89 places, 141 transitions, 1604 flow [2023-08-26 21:30:48,126 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} [2023-08-26 21:30:48,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2023-08-26 21:30:48,127 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 141 transitions, 1604 flow [2023-08-26 21:30:48,127 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) [2023-08-26 21:30:48,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:48,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:48,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:30:48,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:48,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash 505644869, now seen corresponding path program 1 times [2023-08-26 21:30:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:48,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258774050] [2023-08-26 21:30:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258774050] [2023-08-26 21:30:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258774050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617907821] [2023-08-26 21:30:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:49,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-26 21:30:49,013 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) [2023-08-26 21:30:49,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:49,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-26 21:30:49,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:50,092 INFO L124 PetriNetUnfolderBase]: 4056/6837 cut-off events. [2023-08-26 21:30:50,092 INFO L125 PetriNetUnfolderBase]: For 61654/61654 co-relation queries the response was YES. [2023-08-26 21:30:50,112 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. [2023-08-26 21:30:50,135 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 153 selfloop transitions, 57 changer transitions 3/214 dead transitions. [2023-08-26 21:30:50,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 214 transitions, 2787 flow [2023-08-26 21:30:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2023-08-26 21:30:50,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564896755162242 [2023-08-26 21:30:50,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2023-08-26 21:30:50,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2023-08-26 21:30:50,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:50,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2023-08-26 21:30:50,140 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) [2023-08-26 21:30:50,142 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) [2023-08-26 21:30:50,143 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) [2023-08-26 21:30:50,143 INFO L175 Difference]: Start difference. First operand has 89 places, 141 transitions, 1604 flow. Second operand 6 states and 619 transitions. [2023-08-26 21:30:50,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 214 transitions, 2787 flow [2023-08-26 21:30:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 214 transitions, 2744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:30:50,266 INFO L231 Difference]: Finished difference. Result has 94 places, 150 transitions, 1921 flow [2023-08-26 21:30:50,266 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} [2023-08-26 21:30:50,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2023-08-26 21:30:50,266 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 150 transitions, 1921 flow [2023-08-26 21:30:50,267 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) [2023-08-26 21:30:50,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:50,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:50,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:30:50,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:50,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1907839605, now seen corresponding path program 2 times [2023-08-26 21:30:50,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:50,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418937428] [2023-08-26 21:30:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:50,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418937428] [2023-08-26 21:30:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418937428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:51,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:51,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 21:30:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513521286] [2023-08-26 21:30:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 21:30:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 21:30:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-26 21:30:51,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-26 21:30:51,569 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) [2023-08-26 21:30:51,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:51,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-26 21:30:51,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:53,386 INFO L124 PetriNetUnfolderBase]: 6257/10929 cut-off events. [2023-08-26 21:30:53,386 INFO L125 PetriNetUnfolderBase]: For 100455/100455 co-relation queries the response was YES. [2023-08-26 21:30:53,429 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. [2023-08-26 21:30:53,469 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 208 selfloop transitions, 99 changer transitions 6/314 dead transitions. [2023-08-26 21:30:53,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 314 transitions, 4391 flow [2023-08-26 21:30:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:30:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:30:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2023-08-26 21:30:53,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488692232055064 [2023-08-26 21:30:53,472 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 913 transitions. [2023-08-26 21:30:53,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 913 transitions. [2023-08-26 21:30:53,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:53,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 913 transitions. [2023-08-26 21:30:53,474 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) [2023-08-26 21:30:53,477 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) [2023-08-26 21:30:53,478 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) [2023-08-26 21:30:53,478 INFO L175 Difference]: Start difference. First operand has 94 places, 150 transitions, 1921 flow. Second operand 9 states and 913 transitions. [2023-08-26 21:30:53,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 314 transitions, 4391 flow [2023-08-26 21:30:53,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 314 transitions, 4279 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-08-26 21:30:53,628 INFO L231 Difference]: Finished difference. Result has 103 places, 213 transitions, 3240 flow [2023-08-26 21:30:53,629 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} [2023-08-26 21:30:53,629 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-08-26 21:30:53,629 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 213 transitions, 3240 flow [2023-08-26 21:30:53,630 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) [2023-08-26 21:30:53,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:53,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:53,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:30:53,630 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:53,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1688775431, now seen corresponding path program 3 times [2023-08-26 21:30:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337875535] [2023-08-26 21:30:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337875535] [2023-08-26 21:30:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337875535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-26 21:30:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330061743] [2023-08-26 21:30:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:54,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-26 21:30:54,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-26 21:30:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-26 21:30:54,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-26 21:30:54,887 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) [2023-08-26 21:30:54,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:54,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-26 21:30:54,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:30:56,844 INFO L124 PetriNetUnfolderBase]: 6768/11839 cut-off events. [2023-08-26 21:30:56,844 INFO L125 PetriNetUnfolderBase]: For 156577/156577 co-relation queries the response was YES. [2023-08-26 21:30:56,902 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. [2023-08-26 21:30:56,948 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 237 selfloop transitions, 62 changer transitions 3/303 dead transitions. [2023-08-26 21:30:56,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 303 transitions, 4966 flow [2023-08-26 21:30:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:30:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:30:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2023-08-26 21:30:56,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45132743362831856 [2023-08-26 21:30:56,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2023-08-26 21:30:56,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2023-08-26 21:30:56,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:30:56,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2023-08-26 21:30:56,952 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) [2023-08-26 21:30:56,953 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) [2023-08-26 21:30:56,954 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) [2023-08-26 21:30:56,954 INFO L175 Difference]: Start difference. First operand has 103 places, 213 transitions, 3240 flow. Second operand 6 states and 612 transitions. [2023-08-26 21:30:56,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 303 transitions, 4966 flow [2023-08-26 21:30:57,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 303 transitions, 4519 flow, removed 223 selfloop flow, removed 1 redundant places. [2023-08-26 21:30:57,309 INFO L231 Difference]: Finished difference. Result has 109 places, 221 transitions, 3280 flow [2023-08-26 21:30:57,309 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} [2023-08-26 21:30:57,310 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-26 21:30:57,310 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 221 transitions, 3280 flow [2023-08-26 21:30:57,310 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) [2023-08-26 21:30:57,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:30:57,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:30:57,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 21:30:57,311 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:30:57,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:30:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469347, now seen corresponding path program 4 times [2023-08-26 21:30:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:30:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324732572] [2023-08-26 21:30:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:30:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:30:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:30:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:30:58,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:30:58,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324732572] [2023-08-26 21:30:58,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324732572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:30:58,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:30:58,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 21:30:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138172868] [2023-08-26 21:30:58,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:30:58,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 21:30:58,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:30:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 21:30:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 21:30:58,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-26 21:30:58,950 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) [2023-08-26 21:30:58,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:30:58,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-26 21:30:58,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:01,030 INFO L124 PetriNetUnfolderBase]: 7613/13416 cut-off events. [2023-08-26 21:31:01,031 INFO L125 PetriNetUnfolderBase]: For 146899/146899 co-relation queries the response was YES. [2023-08-26 21:31:01,096 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. [2023-08-26 21:31:01,149 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 272 selfloop transitions, 53 changer transitions 3/329 dead transitions. [2023-08-26 21:31:01,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 329 transitions, 5156 flow [2023-08-26 21:31:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:31:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:31:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2023-08-26 21:31:01,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410029498525074 [2023-08-26 21:31:01,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2023-08-26 21:31:01,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2023-08-26 21:31:01,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:01,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2023-08-26 21:31:01,152 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) [2023-08-26 21:31:01,154 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) [2023-08-26 21:31:01,154 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) [2023-08-26 21:31:01,155 INFO L175 Difference]: Start difference. First operand has 109 places, 221 transitions, 3280 flow. Second operand 6 states and 598 transitions. [2023-08-26 21:31:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 329 transitions, 5156 flow [2023-08-26 21:31:01,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 329 transitions, 5078 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-26 21:31:01,554 INFO L231 Difference]: Finished difference. Result has 113 places, 229 transitions, 3508 flow [2023-08-26 21:31:01,554 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} [2023-08-26 21:31:01,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-26 21:31:01,555 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 229 transitions, 3508 flow [2023-08-26 21:31:01,555 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) [2023-08-26 21:31:01,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:01,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:01,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 21:31:01,556 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:01,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1643390482, now seen corresponding path program 1 times [2023-08-26 21:31:01,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502599897] [2023-08-26 21:31:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:01,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502599897] [2023-08-26 21:31:01,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502599897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:01,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:01,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:31:01,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014328177] [2023-08-26 21:31:01,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:31:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:31:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:31:01,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-26 21:31:01,796 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) [2023-08-26 21:31:01,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:01,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-26 21:31:01,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:03,760 INFO L124 PetriNetUnfolderBase]: 7028/12042 cut-off events. [2023-08-26 21:31:03,761 INFO L125 PetriNetUnfolderBase]: For 164078/164078 co-relation queries the response was YES. [2023-08-26 21:31:03,807 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. [2023-08-26 21:31:03,821 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 252 selfloop transitions, 11 changer transitions 124/388 dead transitions. [2023-08-26 21:31:03,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 388 transitions, 6867 flow [2023-08-26 21:31:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:31:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:31:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-08-26 21:31:03,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469026548672566 [2023-08-26 21:31:03,824 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-08-26 21:31:03,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-08-26 21:31:03,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:03,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-08-26 21:31:03,825 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) [2023-08-26 21:31:03,827 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) [2023-08-26 21:31:03,827 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) [2023-08-26 21:31:03,827 INFO L175 Difference]: Start difference. First operand has 113 places, 229 transitions, 3508 flow. Second operand 6 states and 606 transitions. [2023-08-26 21:31:03,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 388 transitions, 6867 flow [2023-08-26 21:31:04,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 388 transitions, 6323 flow, removed 78 selfloop flow, removed 7 redundant places. [2023-08-26 21:31:04,107 INFO L231 Difference]: Finished difference. Result has 109 places, 148 transitions, 2106 flow [2023-08-26 21:31:04,108 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} [2023-08-26 21:31:04,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-26 21:31:04,108 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 148 transitions, 2106 flow [2023-08-26 21:31:04,108 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) [2023-08-26 21:31:04,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:04,109 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] [2023-08-26 21:31:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 21:31:04,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:04,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash 785176123, now seen corresponding path program 1 times [2023-08-26 21:31:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:04,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204675967] [2023-08-26 21:31:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:04,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204675967] [2023-08-26 21:31:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204675967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-26 21:31:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361450400] [2023-08-26 21:31:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:05,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 21:31:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 21:31:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-26 21:31:05,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 226 [2023-08-26 21:31:05,958 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) [2023-08-26 21:31:05,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:05,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 226 [2023-08-26 21:31:05,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:07,108 INFO L124 PetriNetUnfolderBase]: 1759/3430 cut-off events. [2023-08-26 21:31:07,108 INFO L125 PetriNetUnfolderBase]: For 44619/44619 co-relation queries the response was YES. [2023-08-26 21:31:07,121 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. [2023-08-26 21:31:07,129 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 124 selfloop transitions, 109 changer transitions 38/272 dead transitions. [2023-08-26 21:31:07,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 272 transitions, 4357 flow [2023-08-26 21:31:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 21:31:07,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 21:31:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2023-08-26 21:31:07,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154867256637168 [2023-08-26 21:31:07,133 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2023-08-26 21:31:07,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2023-08-26 21:31:07,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:07,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2023-08-26 21:31:07,135 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) [2023-08-26 21:31:07,138 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) [2023-08-26 21:31:07,138 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) [2023-08-26 21:31:07,138 INFO L175 Difference]: Start difference. First operand has 109 places, 148 transitions, 2106 flow. Second operand 10 states and 939 transitions. [2023-08-26 21:31:07,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 272 transitions, 4357 flow [2023-08-26 21:31:07,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 272 transitions, 3693 flow, removed 137 selfloop flow, removed 18 redundant places. [2023-08-26 21:31:07,230 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 3013 flow [2023-08-26 21:31:07,230 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} [2023-08-26 21:31:07,231 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-08-26 21:31:07,231 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 3013 flow [2023-08-26 21:31:07,231 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) [2023-08-26 21:31:07,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:07,231 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] [2023-08-26 21:31:07,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 21:31:07,232 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:07,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash -847336671, now seen corresponding path program 2 times [2023-08-26 21:31:07,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:07,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547321557] [2023-08-26 21:31:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:08,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547321557] [2023-08-26 21:31:08,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547321557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:08,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:08,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 21:31:08,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554151222] [2023-08-26 21:31:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 21:31:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 21:31:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 21:31:08,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-26 21:31:08,619 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) [2023-08-26 21:31:08,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:08,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-26 21:31:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:09,485 INFO L124 PetriNetUnfolderBase]: 2173/4377 cut-off events. [2023-08-26 21:31:09,485 INFO L125 PetriNetUnfolderBase]: For 50582/50582 co-relation queries the response was YES. [2023-08-26 21:31:09,500 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. [2023-08-26 21:31:09,506 INFO L140 encePairwiseOnDemand]: 215/226 looper letters, 78 selfloop transitions, 80 changer transitions 151/310 dead transitions. [2023-08-26 21:31:09,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 310 transitions, 5019 flow [2023-08-26 21:31:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 21:31:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 21:31:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-08-26 21:31:09,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42201327433628316 [2023-08-26 21:31:09,510 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-08-26 21:31:09,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-08-26 21:31:09,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:09,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-08-26 21:31:09,513 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) [2023-08-26 21:31:09,515 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) [2023-08-26 21:31:09,515 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) [2023-08-26 21:31:09,515 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 3013 flow. Second operand 8 states and 763 transitions. [2023-08-26 21:31:09,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 310 transitions, 5019 flow [2023-08-26 21:31:09,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 310 transitions, 4684 flow, removed 148 selfloop flow, removed 2 redundant places. [2023-08-26 21:31:09,641 INFO L231 Difference]: Finished difference. Result has 111 places, 136 transitions, 2260 flow [2023-08-26 21:31:09,642 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} [2023-08-26 21:31:09,642 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-26 21:31:09,642 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 136 transitions, 2260 flow [2023-08-26 21:31:09,643 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) [2023-08-26 21:31:09,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:31:09,643 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] [2023-08-26 21:31:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 21:31:09,644 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-26 21:31:09,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:31:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -656049273, now seen corresponding path program 3 times [2023-08-26 21:31:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:31:09,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378994208] [2023-08-26 21:31:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:31:09,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:31:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:31:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:31:09,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:31:09,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378994208] [2023-08-26 21:31:09,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378994208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:31:09,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:31:09,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:31:09,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332667567] [2023-08-26 21:31:09,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:31:09,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:31:09,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:31:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:31:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:31:09,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 226 [2023-08-26 21:31:09,868 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) [2023-08-26 21:31:09,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:31:09,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 226 [2023-08-26 21:31:09,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:31:10,084 INFO L124 PetriNetUnfolderBase]: 480/961 cut-off events. [2023-08-26 21:31:10,085 INFO L125 PetriNetUnfolderBase]: For 15951/15951 co-relation queries the response was YES. [2023-08-26 21:31:10,089 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. [2023-08-26 21:31:10,090 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-26 21:31:10,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 149 transitions, 2702 flow [2023-08-26 21:31:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:31:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:31:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-26 21:31:10,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502212389380531 [2023-08-26 21:31:10,092 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-26 21:31:10,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-26 21:31:10,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:31:10,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-26 21:31:10,093 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) [2023-08-26 21:31:10,094 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) [2023-08-26 21:31:10,094 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) [2023-08-26 21:31:10,094 INFO L175 Difference]: Start difference. First operand has 111 places, 136 transitions, 2260 flow. Second operand 4 states and 407 transitions. [2023-08-26 21:31:10,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 149 transitions, 2702 flow [2023-08-26 21:31:10,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 2274 flow, removed 87 selfloop flow, removed 22 redundant places. [2023-08-26 21:31:10,128 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2023-08-26 21:31:10,128 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} [2023-08-26 21:31:10,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-26 21:31:10,129 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2023-08-26 21:31:10,129 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) [2023-08-26 21:31:10,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-26 21:31:10,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 21:31:10,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 21:31:10,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 21:31:10,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-26 21:31:10,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-26 21:31:10,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 21:31:10,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (2 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 21:31:10,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 21:31:10,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-26 21:31:10,135 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:31:10,141 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:31:10,141 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:31:10,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:31:10 BasicIcfg [2023-08-26 21:31:10,143 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:31:10,143 INFO L158 Benchmark]: Toolchain (without parser) took 46193.17ms. Allocated memory was 388.0MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 362.3MB in the beginning and 886.1MB in the end (delta: -523.8MB). Peak memory consumption was 903.4MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,144 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:31:10,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.94ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 334.8MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,144 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.39ms. Allocated memory is still 388.0MB. Free memory was 334.8MB in the beginning and 331.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,144 INFO L158 Benchmark]: Boogie Preprocessor took 36.40ms. Allocated memory is still 388.0MB. Free memory was 331.5MB in the beginning and 329.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,144 INFO L158 Benchmark]: RCFGBuilder took 763.46ms. Allocated memory is still 388.0MB. Free memory was 329.0MB in the beginning and 311.9MB in the end (delta: 17.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,145 INFO L158 Benchmark]: TraceAbstraction took 44740.05ms. Allocated memory was 388.0MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 311.9MB in the beginning and 886.1MB in the end (delta: -574.2MB). Peak memory consumption was 850.7MB. Max. memory is 16.0GB. [2023-08-26 21:31:10,146 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 388.0MB. Free memory is still 364.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 587.94ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 334.8MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.39ms. Allocated memory is still 388.0MB. Free memory was 334.8MB in the beginning and 331.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.40ms. Allocated memory is still 388.0MB. Free memory was 331.5MB in the beginning and 329.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 763.46ms. Allocated memory is still 388.0MB. Free memory was 329.0MB in the beginning and 311.9MB in the end (delta: 17.1MB). Peak memory consumption was 19.2MB. Max. memory is 16.0GB. * TraceAbstraction took 44740.05ms. Allocated memory was 388.0MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 311.9MB in the beginning and 886.1MB in the end (delta: -574.2MB). Peak memory consumption was 850.7MB. 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: 4.8s, 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: 44.6s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 25.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 886 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 886 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 3.3s 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, 13.7s 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! [2023-08-26 21:31:10,166 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...