/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:54:04,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:54:04,286 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 03:54:04,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:54:04,289 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:54:04,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:54:04,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:54:04,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:54:04,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:54:04,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:54:04,307 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:54:04,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:54:04,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:54:04,308 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:54:04,308 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:54:04,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:54:04,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:54:04,309 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:54:04,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:54:04,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:54:04,309 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:54:04,310 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:54:04,310 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:54:04,310 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:54:04,310 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:54:04,310 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:54:04,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:54:04,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:54:04,311 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:54:04,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:54:04,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:54:04,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:54:04,312 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:54:04,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:54:04,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:54:04,312 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:54:04,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:54:04,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:54:04,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:54:04,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:54:04,543 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:54:04,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-27 03:54:05,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:54:05,724 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:54:05,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-27 03:54:05,739 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3420c43c7/6e20e62818ee415096e05c12e0086a92/FLAG51ab655d8 [2023-08-27 03:54:05,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3420c43c7/6e20e62818ee415096e05c12e0086a92 [2023-08-27 03:54:05,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:54:05,757 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:54:05,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:54:05,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:54:05,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:54:05,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:54:05" (1/1) ... [2023-08-27 03:54:05,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18149d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:05, skipping insertion in model container [2023-08-27 03:54:05,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:54:05" (1/1) ... [2023-08-27 03:54:05,800 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:54:06,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:54:06,015 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:54:06,037 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:54:06,053 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:54:06,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:54:06,081 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:54:06,081 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:54:06,085 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:54:06,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06 WrapperNode [2023-08-27 03:54:06,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:54:06,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:54:06,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:54:06,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:54:06,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,105 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,120 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-27 03:54:06,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:54:06,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:54:06,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:54:06,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:54:06,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,139 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,142 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:54:06,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:54:06,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:54:06,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:54:06,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (1/1) ... [2023-08-27 03:54:06,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:54:06,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:54:06,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 03:54:06,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 03:54:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:54:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:54:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:54:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:54:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:54:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:54:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:54:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:54:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:54:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:54:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:54:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:54:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:54:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:54:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:54:06,204 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:54:06,322 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:54:06,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:54:06,481 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:54:06,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:54:06,496 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:54:06,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:54:06 BoogieIcfgContainer [2023-08-27 03:54:06,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:54:06,503 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:54:06,503 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:54:06,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:54:06,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:54:05" (1/3) ... [2023-08-27 03:54:06,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c42997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:54:06, skipping insertion in model container [2023-08-27 03:54:06,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:54:06" (2/3) ... [2023-08-27 03:54:06,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c42997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:54:06, skipping insertion in model container [2023-08-27 03:54:06,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:54:06" (3/3) ... [2023-08-27 03:54:06,507 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-08-27 03:54:06,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:54:06,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:54:06,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:54:06,559 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:54:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-27 03:54:06,622 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-27 03:54:06,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:54:06,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:54:06,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-27 03:54:06,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 91 transitions, 191 flow [2023-08-27 03:54:06,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:54:06,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-27 03:54:06,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 91 transitions, 191 flow [2023-08-27 03:54:06,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 91 transitions, 191 flow [2023-08-27 03:54:06,684 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-27 03:54:06,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:54:06,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:54:06,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 03:54:08,706 INFO L134 LiptonReduction]: Checked pairs total: 6641 [2023-08-27 03:54:08,706 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 03:54:08,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:54:08,732 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;@45dce186, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:54:08,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:54:08,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:54:08,740 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 03:54:08,741 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:54:08,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:08,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:54:08,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:08,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 336197355, now seen corresponding path program 1 times [2023-08-27 03:54:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646063640] [2023-08-27 03:54:08,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:08,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:08,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646063640] [2023-08-27 03:54:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646063640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:08,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:08,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:54:08,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934151662] [2023-08-27 03:54:08,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:08,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:54:08,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:08,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:54:08,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:54:08,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:54:08,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:08,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:08,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:54:08,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:09,078 INFO L124 PetriNetUnfolderBase]: 496/815 cut-off events. [2023-08-27 03:54:09,079 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 03:54:09,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 815 events. 496/815 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3710 event pairs, 127 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 1648. Up to 710 conditions per place. [2023-08-27 03:54:09,084 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-27 03:54:09,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-27 03:54:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:54:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:54:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-27 03:54:09,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972375690607735 [2023-08-27 03:54:09,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-27 03:54:09,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-27 03:54:09,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:09,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-27 03:54:09,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,101 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 270 transitions. [2023-08-27 03:54:09,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-27 03:54:09,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:54:09,103 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-27 03:54:09,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 03:54:09,106 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-27 03:54:09,107 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-27 03:54:09,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:09,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:09,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:54:09,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:09,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash 678338138, now seen corresponding path program 1 times [2023-08-27 03:54:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:09,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630072868] [2023-08-27 03:54:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:09,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:09,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:09,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630072868] [2023-08-27 03:54:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630072868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:09,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:09,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:54:09,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526681653] [2023-08-27 03:54:09,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:09,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:54:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:54:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:54:09,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 03:54:09,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:09,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 03:54:09,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:09,507 INFO L124 PetriNetUnfolderBase]: 957/1698 cut-off events. [2023-08-27 03:54:09,507 INFO L125 PetriNetUnfolderBase]: For 265/285 co-relation queries the response was YES. [2023-08-27 03:54:09,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4211 conditions, 1698 events. 957/1698 cut-off events. For 265/285 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10656 event pairs, 372 based on Foata normal form. 0/1357 useless extension candidates. Maximal degree in co-relation 4200. Up to 824 conditions per place. [2023-08-27 03:54:09,516 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 36 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-27 03:54:09,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 241 flow [2023-08-27 03:54:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:54:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:54:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-08-27 03:54:09,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677716390423573 [2023-08-27 03:54:09,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-08-27 03:54:09,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-08-27 03:54:09,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:09,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-08-27 03:54:09,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,522 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 254 transitions. [2023-08-27 03:54:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 241 flow [2023-08-27 03:54:09,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:54:09,523 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 140 flow [2023-08-27 03:54:09,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-27 03:54:09,524 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-27 03:54:09,524 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 140 flow [2023-08-27 03:54:09,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:09,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:09,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:54:09,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:09,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash -446355184, now seen corresponding path program 1 times [2023-08-27 03:54:09,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:09,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648074307] [2023-08-27 03:54:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:09,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648074307] [2023-08-27 03:54:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648074307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:09,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31594845] [2023-08-27 03:54:09,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:09,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 03:54:09,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 03:54:09,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:09,863 INFO L124 PetriNetUnfolderBase]: 930/1655 cut-off events. [2023-08-27 03:54:09,864 INFO L125 PetriNetUnfolderBase]: For 824/852 co-relation queries the response was YES. [2023-08-27 03:54:09,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4903 conditions, 1655 events. 930/1655 cut-off events. For 824/852 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10291 event pairs, 200 based on Foata normal form. 11/1383 useless extension candidates. Maximal degree in co-relation 4889. Up to 826 conditions per place. [2023-08-27 03:54:09,872 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 46 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-08-27 03:54:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 352 flow [2023-08-27 03:54:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:54:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:54:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-27 03:54:09,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558011049723757 [2023-08-27 03:54:09,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-27 03:54:09,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-27 03:54:09,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:09,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-27 03:54:09,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,878 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 140 flow. Second operand 4 states and 330 transitions. [2023-08-27 03:54:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 352 flow [2023-08-27 03:54:09,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:54:09,884 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 184 flow [2023-08-27 03:54:09,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-27 03:54:09,885 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-27 03:54:09,885 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 184 flow [2023-08-27 03:54:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:09,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:09,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:09,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:54:09,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:09,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -446356176, now seen corresponding path program 1 times [2023-08-27 03:54:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818433340] [2023-08-27 03:54:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:09,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818433340] [2023-08-27 03:54:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818433340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:10,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:10,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:10,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271409235] [2023-08-27 03:54:10,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:10,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:10,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:10,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:10,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:10,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 181 [2023-08-27 03:54:10,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:10,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 181 [2023-08-27 03:54:10,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:10,195 INFO L124 PetriNetUnfolderBase]: 1293/2188 cut-off events. [2023-08-27 03:54:10,196 INFO L125 PetriNetUnfolderBase]: For 2218/2243 co-relation queries the response was YES. [2023-08-27 03:54:10,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7025 conditions, 2188 events. 1293/2188 cut-off events. For 2218/2243 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12467 event pairs, 193 based on Foata normal form. 18/1908 useless extension candidates. Maximal degree in co-relation 7008. Up to 974 conditions per place. [2023-08-27 03:54:10,211 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 66 selfloop transitions, 24 changer transitions 0/93 dead transitions. [2023-08-27 03:54:10,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 93 transitions, 628 flow [2023-08-27 03:54:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:54:10,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:54:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2023-08-27 03:54:10,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45966850828729283 [2023-08-27 03:54:10,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2023-08-27 03:54:10,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2023-08-27 03:54:10,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:10,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2023-08-27 03:54:10,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,215 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,215 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 184 flow. Second operand 5 states and 416 transitions. [2023-08-27 03:54:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 93 transitions, 628 flow [2023-08-27 03:54:10,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 93 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:54:10,221 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 405 flow [2023-08-27 03:54:10,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2023-08-27 03:54:10,222 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-27 03:54:10,222 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 405 flow [2023-08-27 03:54:10,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:10,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:54:10,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:10,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:10,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1611617500, now seen corresponding path program 1 times [2023-08-27 03:54:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176152934] [2023-08-27 03:54:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:10,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176152934] [2023-08-27 03:54:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176152934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657619978] [2023-08-27 03:54:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:10,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:10,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:54:10,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:10,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:54:10,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:10,403 INFO L124 PetriNetUnfolderBase]: 914/1522 cut-off events. [2023-08-27 03:54:10,403 INFO L125 PetriNetUnfolderBase]: For 4238/4386 co-relation queries the response was YES. [2023-08-27 03:54:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6099 conditions, 1522 events. 914/1522 cut-off events. For 4238/4386 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8458 event pairs, 98 based on Foata normal form. 86/1345 useless extension candidates. Maximal degree in co-relation 6077. Up to 1119 conditions per place. [2023-08-27 03:54:10,411 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-27 03:54:10,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 729 flow [2023-08-27 03:54:10,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:54:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:54:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-27 03:54:10,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46685082872928174 [2023-08-27 03:54:10,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-27 03:54:10,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-27 03:54:10,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:10,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-27 03:54:10,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,415 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 405 flow. Second operand 4 states and 338 transitions. [2023-08-27 03:54:10,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 729 flow [2023-08-27 03:54:10,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 729 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:54:10,419 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 401 flow [2023-08-27 03:54:10,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=401, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-27 03:54:10,419 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-27 03:54:10,419 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 401 flow [2023-08-27 03:54:10,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:10,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:10,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:54:10,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:10,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1611846279, now seen corresponding path program 1 times [2023-08-27 03:54:10,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:10,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13320284] [2023-08-27 03:54:10,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:10,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13320284] [2023-08-27 03:54:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13320284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:10,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:10,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126807457] [2023-08-27 03:54:10,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:54:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:54:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:10,543 INFO L124 PetriNetUnfolderBase]: 647/1099 cut-off events. [2023-08-27 03:54:10,543 INFO L125 PetriNetUnfolderBase]: For 3692/3830 co-relation queries the response was YES. [2023-08-27 03:54:10,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4787 conditions, 1099 events. 647/1099 cut-off events. For 3692/3830 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5778 event pairs, 38 based on Foata normal form. 80/1138 useless extension candidates. Maximal degree in co-relation 4763. Up to 391 conditions per place. [2023-08-27 03:54:10,548 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 73 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-08-27 03:54:10,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 903 flow [2023-08-27 03:54:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:54:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:54:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2023-08-27 03:54:10,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48204419889502764 [2023-08-27 03:54:10,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 349 transitions. [2023-08-27 03:54:10,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 349 transitions. [2023-08-27 03:54:10,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:10,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 349 transitions. [2023-08-27 03:54:10,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,552 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,552 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 401 flow. Second operand 4 states and 349 transitions. [2023-08-27 03:54:10,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 903 flow [2023-08-27 03:54:10,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 92 transitions, 898 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:54:10,556 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 440 flow [2023-08-27 03:54:10,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=440, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2023-08-27 03:54:10,557 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-27 03:54:10,557 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 440 flow [2023-08-27 03:54:10,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:10,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:10,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:54:10,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:10,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -952140581, now seen corresponding path program 1 times [2023-08-27 03:54:10,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:10,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529341841] [2023-08-27 03:54:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:10,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:10,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529341841] [2023-08-27 03:54:10,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529341841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:10,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:10,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:10,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081394392] [2023-08-27 03:54:10,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:10,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:10,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:10,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:10,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 03:54:10,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 440 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:10,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 03:54:10,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:10,735 INFO L124 PetriNetUnfolderBase]: 769/1266 cut-off events. [2023-08-27 03:54:10,736 INFO L125 PetriNetUnfolderBase]: For 4165/4188 co-relation queries the response was YES. [2023-08-27 03:54:10,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 1266 events. 769/1266 cut-off events. For 4165/4188 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6221 event pairs, 49 based on Foata normal form. 10/1245 useless extension candidates. Maximal degree in co-relation 6180. Up to 638 conditions per place. [2023-08-27 03:54:10,742 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 63 selfloop transitions, 31 changer transitions 0/96 dead transitions. [2023-08-27 03:54:10,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 96 transitions, 947 flow [2023-08-27 03:54:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:54:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:54:10,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-08-27 03:54:10,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654696132596685 [2023-08-27 03:54:10,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-08-27 03:54:10,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-08-27 03:54:10,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:10,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-08-27 03:54:10,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,745 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,745 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 440 flow. Second operand 4 states and 337 transitions. [2023-08-27 03:54:10,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 96 transitions, 947 flow [2023-08-27 03:54:10,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 920 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 03:54:10,751 INFO L231 Difference]: Finished difference. Result has 54 places, 69 transitions, 744 flow [2023-08-27 03:54:10,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=54, PETRI_TRANSITIONS=69} [2023-08-27 03:54:10,751 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-08-27 03:54:10,752 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 69 transitions, 744 flow [2023-08-27 03:54:10,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:10,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:10,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:54:10,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:10,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -952140550, now seen corresponding path program 1 times [2023-08-27 03:54:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471160277] [2023-08-27 03:54:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:10,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:10,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:10,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:10,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471160277] [2023-08-27 03:54:10,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471160277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:10,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:10,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:54:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483895538] [2023-08-27 03:54:10,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:54:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:54:10,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:54:10,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 181 [2023-08-27 03:54:10,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 69 transitions, 744 flow. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:10,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 181 [2023-08-27 03:54:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:10,984 INFO L124 PetriNetUnfolderBase]: 963/1538 cut-off events. [2023-08-27 03:54:10,985 INFO L125 PetriNetUnfolderBase]: For 8824/8824 co-relation queries the response was YES. [2023-08-27 03:54:10,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8077 conditions, 1538 events. 963/1538 cut-off events. For 8824/8824 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7334 event pairs, 128 based on Foata normal form. 39/1547 useless extension candidates. Maximal degree in co-relation 8049. Up to 680 conditions per place. [2023-08-27 03:54:10,992 INFO L140 encePairwiseOnDemand]: 173/181 looper letters, 103 selfloop transitions, 13 changer transitions 3/119 dead transitions. [2023-08-27 03:54:10,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 119 transitions, 1384 flow [2023-08-27 03:54:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:54:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:54:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 402 transitions. [2023-08-27 03:54:10,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44419889502762433 [2023-08-27 03:54:10,994 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 402 transitions. [2023-08-27 03:54:10,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 402 transitions. [2023-08-27 03:54:10,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:10,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 402 transitions. [2023-08-27 03:54:10,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:10,996 INFO L175 Difference]: Start difference. First operand has 54 places, 69 transitions, 744 flow. Second operand 5 states and 402 transitions. [2023-08-27 03:54:10,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 119 transitions, 1384 flow [2023-08-27 03:54:11,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 1384 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:54:11,004 INFO L231 Difference]: Finished difference. Result has 62 places, 76 transitions, 924 flow [2023-08-27 03:54:11,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=924, PETRI_PLACES=62, PETRI_TRANSITIONS=76} [2023-08-27 03:54:11,004 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 28 predicate places. [2023-08-27 03:54:11,004 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 76 transitions, 924 flow [2023-08-27 03:54:11,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:11,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:54:11,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:11,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:11,005 INFO L85 PathProgramCache]: Analyzing trace with hash 515236768, now seen corresponding path program 1 times [2023-08-27 03:54:11,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712201887] [2023-08-27 03:54:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:11,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:11,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:11,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712201887] [2023-08-27 03:54:11,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712201887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:11,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:11,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:11,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333508329] [2023-08-27 03:54:11,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:11,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:54:11,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:54:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:54:11,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-08-27 03:54:11,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 76 transitions, 924 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:11,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-08-27 03:54:11,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:11,219 INFO L124 PetriNetUnfolderBase]: 590/1094 cut-off events. [2023-08-27 03:54:11,219 INFO L125 PetriNetUnfolderBase]: For 10567/11079 co-relation queries the response was YES. [2023-08-27 03:54:11,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5614 conditions, 1094 events. 590/1094 cut-off events. For 10567/11079 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6404 event pairs, 70 based on Foata normal form. 528/1558 useless extension candidates. Maximal degree in co-relation 5580. Up to 647 conditions per place. [2023-08-27 03:54:11,225 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 105 selfloop transitions, 8 changer transitions 3/135 dead transitions. [2023-08-27 03:54:11,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 135 transitions, 1796 flow [2023-08-27 03:54:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:54:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:54:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-27 03:54:11,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46187845303867403 [2023-08-27 03:54:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-27 03:54:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-27 03:54:11,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:11,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-27 03:54:11,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,228 INFO L175 Difference]: Start difference. First operand has 62 places, 76 transitions, 924 flow. Second operand 5 states and 418 transitions. [2023-08-27 03:54:11,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 135 transitions, 1796 flow [2023-08-27 03:54:11,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 1793 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:54:11,239 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 966 flow [2023-08-27 03:54:11,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=966, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-08-27 03:54:11,240 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2023-08-27 03:54:11,240 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 966 flow [2023-08-27 03:54:11,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:11,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:54:11,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:11,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1384893067, now seen corresponding path program 1 times [2023-08-27 03:54:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:11,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174140592] [2023-08-27 03:54:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:11,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:11,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174140592] [2023-08-27 03:54:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174140592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:11,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:11,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:54:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407528952] [2023-08-27 03:54:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:54:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:54:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:54:11,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:54:11,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 966 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:11,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:54:11,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:11,382 INFO L124 PetriNetUnfolderBase]: 545/1014 cut-off events. [2023-08-27 03:54:11,382 INFO L125 PetriNetUnfolderBase]: For 9709/10071 co-relation queries the response was YES. [2023-08-27 03:54:11,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 1014 events. 545/1014 cut-off events. For 9709/10071 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5911 event pairs, 33 based on Foata normal form. 234/1234 useless extension candidates. Maximal degree in co-relation 5821. Up to 373 conditions per place. [2023-08-27 03:54:11,386 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 32 selfloop transitions, 11 changer transitions 58/110 dead transitions. [2023-08-27 03:54:11,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 110 transitions, 1602 flow [2023-08-27 03:54:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:54:11,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:54:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-08-27 03:54:11,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662983425414365 [2023-08-27 03:54:11,388 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-08-27 03:54:11,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-08-27 03:54:11,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:11,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-08-27 03:54:11,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,390 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,390 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 966 flow. Second operand 5 states and 422 transitions. [2023-08-27 03:54:11,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 110 transitions, 1602 flow [2023-08-27 03:54:11,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 1591 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:54:11,400 INFO L231 Difference]: Finished difference. Result has 67 places, 36 transitions, 379 flow [2023-08-27 03:54:11,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=36} [2023-08-27 03:54:11,400 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-08-27 03:54:11,400 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 36 transitions, 379 flow [2023-08-27 03:54:11,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:11,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:54:11,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:11,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1279759335, now seen corresponding path program 1 times [2023-08-27 03:54:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066712967] [2023-08-27 03:54:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:11,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:11,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066712967] [2023-08-27 03:54:11,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066712967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:11,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:11,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:54:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570102842] [2023-08-27 03:54:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:11,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:54:11,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:11,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:54:11,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:54:11,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-08-27 03:54:11,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 36 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:11,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-08-27 03:54:11,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:11,534 INFO L124 PetriNetUnfolderBase]: 127/281 cut-off events. [2023-08-27 03:54:11,534 INFO L125 PetriNetUnfolderBase]: For 2575/2624 co-relation queries the response was YES. [2023-08-27 03:54:11,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 281 events. 127/281 cut-off events. For 2575/2624 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1298 event pairs, 11 based on Foata normal form. 36/312 useless extension candidates. Maximal degree in co-relation 1625. Up to 82 conditions per place. [2023-08-27 03:54:11,536 INFO L140 encePairwiseOnDemand]: 175/181 looper letters, 41 selfloop transitions, 13 changer transitions 10/73 dead transitions. [2023-08-27 03:54:11,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 941 flow [2023-08-27 03:54:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:54:11,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:54:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2023-08-27 03:54:11,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483030781373323 [2023-08-27 03:54:11,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2023-08-27 03:54:11,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2023-08-27 03:54:11,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:11,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2023-08-27 03:54:11,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,540 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,540 INFO L175 Difference]: Start difference. First operand has 67 places, 36 transitions, 379 flow. Second operand 7 states and 568 transitions. [2023-08-27 03:54:11,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 941 flow [2023-08-27 03:54:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 651 flow, removed 41 selfloop flow, removed 17 redundant places. [2023-08-27 03:54:11,543 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 306 flow [2023-08-27 03:54:11,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2023-08-27 03:54:11,544 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-08-27 03:54:11,544 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 306 flow [2023-08-27 03:54:11,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:11,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:54:11,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:11,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:11,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1105785107, now seen corresponding path program 1 times [2023-08-27 03:54:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882966216] [2023-08-27 03:54:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:11,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:11,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882966216] [2023-08-27 03:54:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882966216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:11,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:11,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:54:11,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350961482] [2023-08-27 03:54:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:11,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:54:11,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:54:11,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:54:11,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 181 [2023-08-27 03:54:11,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:11,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 181 [2023-08-27 03:54:11,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:11,657 INFO L124 PetriNetUnfolderBase]: 176/384 cut-off events. [2023-08-27 03:54:11,657 INFO L125 PetriNetUnfolderBase]: For 1601/1620 co-relation queries the response was YES. [2023-08-27 03:54:11,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1924 conditions, 384 events. 176/384 cut-off events. For 1601/1620 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1891 event pairs, 61 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 1896. Up to 202 conditions per place. [2023-08-27 03:54:11,658 INFO L140 encePairwiseOnDemand]: 178/181 looper letters, 25 selfloop transitions, 3 changer transitions 27/58 dead transitions. [2023-08-27 03:54:11,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 535 flow [2023-08-27 03:54:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:54:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:54:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-27 03:54:11,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732965009208103 [2023-08-27 03:54:11,659 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-27 03:54:11,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-27 03:54:11,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:11,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-27 03:54:11,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,661 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 306 flow. Second operand 3 states and 257 transitions. [2023-08-27 03:54:11,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 535 flow [2023-08-27 03:54:11,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 491 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 03:54:11,664 INFO L231 Difference]: Finished difference. Result has 57 places, 26 transitions, 202 flow [2023-08-27 03:54:11,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=57, PETRI_TRANSITIONS=26} [2023-08-27 03:54:11,665 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-27 03:54:11,665 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 26 transitions, 202 flow [2023-08-27 03:54:11,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:54:11,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:54:11,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:54:11,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:54:11,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1410409433, now seen corresponding path program 2 times [2023-08-27 03:54:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:54:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365119732] [2023-08-27 03:54:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:54:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:54:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:54:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:54:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:54:11,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365119732] [2023-08-27 03:54:11,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365119732] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:54:11,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:54:11,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:54:11,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275644074] [2023-08-27 03:54:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:54:11,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:54:11,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:54:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:54:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:54:11,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 181 [2023-08-27 03:54:11,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 26 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:54:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 181 [2023-08-27 03:54:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:54:11,794 INFO L124 PetriNetUnfolderBase]: 46/121 cut-off events. [2023-08-27 03:54:11,795 INFO L125 PetriNetUnfolderBase]: For 355/380 co-relation queries the response was YES. [2023-08-27 03:54:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 121 events. 46/121 cut-off events. For 355/380 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 420 event pairs, 8 based on Foata normal form. 15/131 useless extension candidates. Maximal degree in co-relation 534. Up to 40 conditions per place. [2023-08-27 03:54:11,795 INFO L140 encePairwiseOnDemand]: 175/181 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-27 03:54:11,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 358 flow [2023-08-27 03:54:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:54:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:54:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 553 transitions. [2023-08-27 03:54:11,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43646408839779005 [2023-08-27 03:54:11,797 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 553 transitions. [2023-08-27 03:54:11,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 553 transitions. [2023-08-27 03:54:11,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:54:11,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 553 transitions. [2023-08-27 03:54:11,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,800 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 181.0) internal successors, (1448), 8 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,800 INFO L175 Difference]: Start difference. First operand has 57 places, 26 transitions, 202 flow. Second operand 7 states and 553 transitions. [2023-08-27 03:54:11,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 358 flow [2023-08-27 03:54:11,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 270 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-27 03:54:11,801 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-27 03:54:11,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-27 03:54:11,801 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-27 03:54:11,801 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-27 03:54:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.16666666666667) internal successors, (457), 6 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:54:11,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:54:11,804 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:54:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:54:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:54:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:54:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:54:11,805 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:54:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:54:11,805 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:54:11,808 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:54:11,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:54:11,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:54:11 BasicIcfg [2023-08-27 03:54:11,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:54:11,810 INFO L158 Benchmark]: Toolchain (without parser) took 6053.11ms. Allocated memory was 398.5MB in the beginning and 685.8MB in the end (delta: 287.3MB). Free memory was 373.6MB in the beginning and 593.8MB in the end (delta: -220.2MB). Peak memory consumption was 66.8MB. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 374.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.68ms. Allocated memory is still 398.5MB. Free memory was 373.1MB in the beginning and 352.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.15ms. Allocated memory is still 398.5MB. Free memory was 352.8MB in the beginning and 351.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: Boogie Preprocessor took 25.55ms. Allocated memory is still 398.5MB. Free memory was 351.3MB in the beginning and 349.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: RCFGBuilder took 355.51ms. Allocated memory is still 398.5MB. Free memory was 349.7MB in the beginning and 334.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 03:54:11,811 INFO L158 Benchmark]: TraceAbstraction took 5306.78ms. Allocated memory was 398.5MB in the beginning and 685.8MB in the end (delta: 287.3MB). Free memory was 333.4MB in the beginning and 593.8MB in the end (delta: -260.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.0GB. [2023-08-27 03:54:11,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 374.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 326.68ms. Allocated memory is still 398.5MB. Free memory was 373.1MB in the beginning and 352.8MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.15ms. Allocated memory is still 398.5MB. Free memory was 352.8MB in the beginning and 351.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 25.55ms. Allocated memory is still 398.5MB. Free memory was 351.3MB in the beginning and 349.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 355.51ms. Allocated memory is still 398.5MB. Free memory was 349.7MB in the beginning and 334.0MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5306.78ms. Allocated memory was 398.5MB in the beginning and 685.8MB in the end (delta: 287.3MB). Free memory was 333.4MB in the beginning and 593.8MB in the end (delta: -260.4MB). Peak memory consumption was 26.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 98 PlacesBefore, 34 PlacesAfterwards, 91 TransitionsBefore, 25 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 6641 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3485, independent: 3294, independent conditional: 0, independent unconditional: 3294, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1226, independent: 1176, independent conditional: 0, independent unconditional: 1176, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3485, independent: 2118, independent conditional: 0, independent unconditional: 2118, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1226, unknown conditional: 0, unknown unconditional: 1226] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 731]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 731]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 746]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 122 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 250 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 695 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 22 mSDtfsCounter, 695 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=966occurred in iteration=9, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:54:11,837 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...