/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/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:58:58,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:58:58,748 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 03:58:58,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:58:58,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:58:58,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:58:58,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:58:58,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:58:58,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:58:58,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:58:58,785 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:58:58,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:58:58,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:58:58,787 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:58:58,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:58:58,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:58:58,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:58:58,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:58:58,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:58:58,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:58:58,788 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:58:58,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:58:58,789 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:58:58,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:58:58,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:58:58,791 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:58:58,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:58:58,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:58:58,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:58:58,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:58:58,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:58:58,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:58:58,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:58:58,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:58:58,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:58:58,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:58:59,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:58:59,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:58:59,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:58:59,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:58:59,099 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:58:59,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-27 03:59:00,344 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:59:00,614 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:59:00,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-27 03:59:00,634 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64f6df3e/3bd822240182470c801a0355400dad17/FLAGdf4655a53 [2023-08-27 03:59:00,645 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64f6df3e/3bd822240182470c801a0355400dad17 [2023-08-27 03:59:00,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:59:00,649 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:59:00,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:00,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:59:00,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:59:00,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:00" (1/1) ... [2023-08-27 03:59:00,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672b3de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:00, skipping insertion in model container [2023-08-27 03:59:00,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:00" (1/1) ... [2023-08-27 03:59:00,694 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:59:01,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:01,102 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:59:01,116 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:59:01,118 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:59:01,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:01,210 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:01,210 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:01,216 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:59:01,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01 WrapperNode [2023-08-27 03:59:01,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:01,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:01,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:59:01,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:59:01,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,287 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 181 [2023-08-27 03:59:01,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:01,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:59:01,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:59:01,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:59:01,298 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,303 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,333 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:59:01,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:59:01,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:59:01,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:59:01,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (1/1) ... [2023-08-27 03:59:01,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:59:01,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:59:01,380 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 03:59:01,386 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 03:59:01,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:59:01,408 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:59:01,408 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:59:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:59:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:59:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:59:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:59:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:59:01,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:59:01,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:59:01,410 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 03:59:01,526 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:59:01,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:59:02,001 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:59:02,129 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:59:02,129 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:59:02,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:02 BoogieIcfgContainer [2023-08-27 03:59:02,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:59:02,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:59:02,133 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:59:02,136 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:59:02,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:59:00" (1/3) ... [2023-08-27 03:59:02,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e74c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:02, skipping insertion in model container [2023-08-27 03:59:02,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:01" (2/3) ... [2023-08-27 03:59:02,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e74c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:02, skipping insertion in model container [2023-08-27 03:59:02,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:02" (3/3) ... [2023-08-27 03:59:02,138 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-27 03:59:02,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:59:02,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-27 03:59:02,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:59:02,202 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:59:02,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 259 flow [2023-08-27 03:59:02,271 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-27 03:59:02,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:02,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-27 03:59:02,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 122 transitions, 259 flow [2023-08-27 03:59:02,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 119 transitions, 247 flow [2023-08-27 03:59:02,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:59:02,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-27 03:59:02,305 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 119 transitions, 247 flow [2023-08-27 03:59:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 119 transitions, 247 flow [2023-08-27 03:59:02,352 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-08-27 03:59:02,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:02,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-08-27 03:59:02,356 INFO L119 LiptonReduction]: Number of co-enabled transitions 3106 [2023-08-27 03:59:07,263 INFO L134 LiptonReduction]: Checked pairs total: 11681 [2023-08-27 03:59:07,263 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-27 03:59:07,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:59:07,281 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;@766f4bdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:59:07,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-27 03:59:07,285 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:59:07,285 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-27 03:59:07,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:07,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:07,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:07,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:07,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:07,290 INFO L85 PathProgramCache]: Analyzing trace with hash -330897229, now seen corresponding path program 1 times [2023-08-27 03:59:07,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:07,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415954023] [2023-08-27 03:59:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:07,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:07,602 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 03:59:07,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415954023] [2023-08-27 03:59:07,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415954023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:07,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:07,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:59:07,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779241007] [2023-08-27 03:59:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:07,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:59:07,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:07,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:59:07,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:59:07,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 03:59:07,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:07,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:07,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 03:59:07,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,532 INFO L124 PetriNetUnfolderBase]: 3192/4713 cut-off events. [2023-08-27 03:59:08,532 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-27 03:59:08,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 4713 events. 3192/4713 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 23202 event pairs, 1474 based on Foata normal form. 0/3796 useless extension candidates. Maximal degree in co-relation 9498. Up to 2684 conditions per place. [2023-08-27 03:59:08,562 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 50 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-27 03:59:08,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 233 flow [2023-08-27 03:59:08,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:59:08,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:59:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-27 03:59:08,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49557522123893805 [2023-08-27 03:59:08,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-27 03:59:08,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-27 03:59:08,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-27 03:59:08,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,587 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 336 transitions. [2023-08-27 03:59:08,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 233 flow [2023-08-27 03:59:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:59:08,592 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 106 flow [2023-08-27 03:59:08,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 03:59:08,596 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 03:59:08,597 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 106 flow [2023-08-27 03:59:08,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:59:08,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:08,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash -273444834, now seen corresponding path program 1 times [2023-08-27 03:59:08,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466399175] [2023-08-27 03:59:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,766 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 03:59:08,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466399175] [2023-08-27 03:59:08,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466399175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:59:08,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671540670] [2023-08-27 03:59:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:59:08,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:59:08,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:59:08,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-27 03:59:08,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-27 03:59:08,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:09,412 INFO L124 PetriNetUnfolderBase]: 2525/3834 cut-off events. [2023-08-27 03:59:09,413 INFO L125 PetriNetUnfolderBase]: For 285/317 co-relation queries the response was YES. [2023-08-27 03:59:09,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8875 conditions, 3834 events. 2525/3834 cut-off events. For 285/317 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19608 event pairs, 377 based on Foata normal form. 0/3378 useless extension candidates. Maximal degree in co-relation 8864. Up to 3087 conditions per place. [2023-08-27 03:59:09,437 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 45 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-27 03:59:09,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 51 transitions, 246 flow [2023-08-27 03:59:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:59:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:59:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-27 03:59:09,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882005899705015 [2023-08-27 03:59:09,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-27 03:59:09,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-27 03:59:09,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:09,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-27 03:59:09,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,450 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 106 flow. Second operand 3 states and 331 transitions. [2023-08-27 03:59:09,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 51 transitions, 246 flow [2023-08-27 03:59:09,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:59:09,458 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 104 flow [2023-08-27 03:59:09,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-27 03:59:09,459 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 03:59:09,460 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 104 flow [2023-08-27 03:59:09,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:09,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:09,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:59:09,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:09,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash -787450195, now seen corresponding path program 1 times [2023-08-27 03:59:09,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:09,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529681922] [2023-08-27 03:59:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:09,686 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 03:59:09,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529681922] [2023-08-27 03:59:09,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529681922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:09,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:09,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:59:09,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736960375] [2023-08-27 03:59:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:09,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:59:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:09,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:59:09,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:59:09,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 226 [2023-08-27 03:59:09,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:09,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 226 [2023-08-27 03:59:09,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:10,194 INFO L124 PetriNetUnfolderBase]: 2270/3475 cut-off events. [2023-08-27 03:59:10,194 INFO L125 PetriNetUnfolderBase]: For 378/391 co-relation queries the response was YES. [2023-08-27 03:59:10,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7902 conditions, 3475 events. 2270/3475 cut-off events. For 378/391 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17139 event pairs, 1004 based on Foata normal form. 0/3119 useless extension candidates. Maximal degree in co-relation 7890. Up to 1969 conditions per place. [2023-08-27 03:59:10,212 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 44 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 03:59:10,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 240 flow [2023-08-27 03:59:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:59:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:59:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-27 03:59:10,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48672566371681414 [2023-08-27 03:59:10,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-27 03:59:10,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-27 03:59:10,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:10,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-27 03:59:10,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:10,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:10,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 226.0) internal successors, (904), 4 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:10,217 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 104 flow. Second operand 3 states and 330 transitions. [2023-08-27 03:59:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 240 flow [2023-08-27 03:59:10,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:10,219 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 108 flow [2023-08-27 03:59:10,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-27 03:59:10,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 03:59:10,220 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 108 flow [2023-08-27 03:59:10,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:10,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:10,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:10,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:59:10,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:10,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:10,222 INFO L85 PathProgramCache]: Analyzing trace with hash 127584676, now seen corresponding path program 1 times [2023-08-27 03:59:10,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:10,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317321072] [2023-08-27 03:59:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:10,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:11,236 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 03:59:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317321072] [2023-08-27 03:59:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317321072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:11,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:11,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901923120] [2023-08-27 03:59:11,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:11,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 03:59:11,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 03:59:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 03:59:11,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 03:59:11,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:11,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:11,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 03:59:11,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:12,534 INFO L124 PetriNetUnfolderBase]: 4656/7090 cut-off events. [2023-08-27 03:59:12,534 INFO L125 PetriNetUnfolderBase]: For 922/982 co-relation queries the response was YES. [2023-08-27 03:59:12,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16728 conditions, 7090 events. 4656/7090 cut-off events. For 922/982 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 39902 event pairs, 654 based on Foata normal form. 32/6651 useless extension candidates. Maximal degree in co-relation 16715. Up to 2671 conditions per place. [2023-08-27 03:59:12,589 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 92 selfloop transitions, 28 changer transitions 0/124 dead transitions. [2023-08-27 03:59:12,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 124 transitions, 602 flow [2023-08-27 03:59:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 03:59:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 03:59:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 730 transitions. [2023-08-27 03:59:12,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461441213653603 [2023-08-27 03:59:12,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 730 transitions. [2023-08-27 03:59:12,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 730 transitions. [2023-08-27 03:59:12,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:12,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 730 transitions. [2023-08-27 03:59:12,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.28571428571429) internal successors, (730), 7 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:12,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:12,598 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 226.0) internal successors, (1808), 8 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:12,598 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 108 flow. Second operand 7 states and 730 transitions. [2023-08-27 03:59:12,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 124 transitions, 602 flow [2023-08-27 03:59:12,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 124 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:12,617 INFO L231 Difference]: Finished difference. Result has 51 places, 60 transitions, 306 flow [2023-08-27 03:59:12,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=51, PETRI_TRANSITIONS=60} [2023-08-27 03:59:12,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-27 03:59:12,618 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 60 transitions, 306 flow [2023-08-27 03:59:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:12,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:12,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:12,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:59:12,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:12,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:12,620 INFO L85 PathProgramCache]: Analyzing trace with hash 124401286, now seen corresponding path program 2 times [2023-08-27 03:59:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020880199] [2023-08-27 03:59:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:13,438 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 03:59:13,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020880199] [2023-08-27 03:59:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020880199] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915927001] [2023-08-27 03:59:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:13,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 03:59:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 03:59:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 03:59:13,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 03:59:13,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 60 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:13,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:13,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 03:59:13,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:14,640 INFO L124 PetriNetUnfolderBase]: 5217/7896 cut-off events. [2023-08-27 03:59:14,640 INFO L125 PetriNetUnfolderBase]: For 9905/9978 co-relation queries the response was YES. [2023-08-27 03:59:14,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29064 conditions, 7896 events. 5217/7896 cut-off events. For 9905/9978 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 45035 event pairs, 1907 based on Foata normal form. 32/7448 useless extension candidates. Maximal degree in co-relation 29047. Up to 6294 conditions per place. [2023-08-27 03:59:14,690 INFO L140 encePairwiseOnDemand]: 213/226 looper letters, 72 selfloop transitions, 32 changer transitions 0/108 dead transitions. [2023-08-27 03:59:14,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 753 flow [2023-08-27 03:59:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2023-08-27 03:59:14,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-27 03:59:14,698 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2023-08-27 03:59:14,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2023-08-27 03:59:14,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:14,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2023-08-27 03:59:14,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:14,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:14,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:14,703 INFO L175 Difference]: Start difference. First operand has 51 places, 60 transitions, 306 flow. Second operand 6 states and 603 transitions. [2023-08-27 03:59:14,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 753 flow [2023-08-27 03:59:14,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 750 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:59:14,716 INFO L231 Difference]: Finished difference. Result has 57 places, 76 transitions, 519 flow [2023-08-27 03:59:14,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=57, PETRI_TRANSITIONS=76} [2023-08-27 03:59:14,719 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-27 03:59:14,719 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 519 flow [2023-08-27 03:59:14,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:14,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:14,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:14,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:59:14,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:14,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:14,720 INFO L85 PathProgramCache]: Analyzing trace with hash -438586518, now seen corresponding path program 1 times [2023-08-27 03:59:14,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:14,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347082878] [2023-08-27 03:59:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:14,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:14,971 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 03:59:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347082878] [2023-08-27 03:59:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347082878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:14,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:14,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:59:14,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751898980] [2023-08-27 03:59:14,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:14,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:14,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:14,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:14,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 03:59:14,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 76 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:14,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:14,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 03:59:14,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:15,801 INFO L124 PetriNetUnfolderBase]: 4221/6736 cut-off events. [2023-08-27 03:59:15,802 INFO L125 PetriNetUnfolderBase]: For 14866/14866 co-relation queries the response was YES. [2023-08-27 03:59:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27748 conditions, 6736 events. 4221/6736 cut-off events. For 14866/14866 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 41566 event pairs, 568 based on Foata normal form. 566/6225 useless extension candidates. Maximal degree in co-relation 27728. Up to 3664 conditions per place. [2023-08-27 03:59:15,849 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 161 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-27 03:59:15,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 167 transitions, 1504 flow [2023-08-27 03:59:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 431 transitions. [2023-08-27 03:59:15,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47676991150442477 [2023-08-27 03:59:15,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 431 transitions. [2023-08-27 03:59:15,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 431 transitions. [2023-08-27 03:59:15,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:15,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 431 transitions. [2023-08-27 03:59:15,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:15,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:15,854 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:15,854 INFO L175 Difference]: Start difference. First operand has 57 places, 76 transitions, 519 flow. Second operand 4 states and 431 transitions. [2023-08-27 03:59:15,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 167 transitions, 1504 flow [2023-08-27 03:59:15,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 167 transitions, 1456 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:15,870 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 517 flow [2023-08-27 03:59:15,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2023-08-27 03:59:15,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 03:59:15,871 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 517 flow [2023-08-27 03:59:15,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:15,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:15,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:59:15,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:15,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -939585923, now seen corresponding path program 1 times [2023-08-27 03:59:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615577165] [2023-08-27 03:59:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:59:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615577165] [2023-08-27 03:59:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615577165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:15,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:15,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:59:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598514441] [2023-08-27 03:59:15,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:15,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:15,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 03:59:15,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:15,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:15,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 03:59:15,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:16,652 INFO L124 PetriNetUnfolderBase]: 3429/5443 cut-off events. [2023-08-27 03:59:16,653 INFO L125 PetriNetUnfolderBase]: For 15503/15503 co-relation queries the response was YES. [2023-08-27 03:59:16,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24667 conditions, 5443 events. 3429/5443 cut-off events. For 15503/15503 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31492 event pairs, 959 based on Foata normal form. 0/4975 useless extension candidates. Maximal degree in co-relation 24644. Up to 3987 conditions per place. [2023-08-27 03:59:16,683 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 114 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2023-08-27 03:59:16,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 1073 flow [2023-08-27 03:59:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2023-08-27 03:59:16,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461283185840708 [2023-08-27 03:59:16,685 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2023-08-27 03:59:16,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2023-08-27 03:59:16,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:16,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2023-08-27 03:59:16,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:16,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:16,688 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:16,688 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 517 flow. Second operand 4 states and 417 transitions. [2023-08-27 03:59:16,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 1073 flow [2023-08-27 03:59:16,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 1067 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:16,698 INFO L231 Difference]: Finished difference. Result has 58 places, 73 transitions, 507 flow [2023-08-27 03:59:16,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=507, PETRI_PLACES=58, PETRI_TRANSITIONS=73} [2023-08-27 03:59:16,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-27 03:59:16,699 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 73 transitions, 507 flow [2023-08-27 03:59:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:16,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:16,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:16,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:59:16,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:16,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash -72818622, now seen corresponding path program 1 times [2023-08-27 03:59:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:16,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809876617] [2023-08-27 03:59:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:16,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:16,759 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 03:59:16,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:16,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809876617] [2023-08-27 03:59:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809876617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:16,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:16,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:59:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141687157] [2023-08-27 03:59:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:16,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:16,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:16,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 226 [2023-08-27 03:59:16,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 73 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:16,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:16,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 226 [2023-08-27 03:59:16,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:17,495 INFO L124 PetriNetUnfolderBase]: 2781/4401 cut-off events. [2023-08-27 03:59:17,495 INFO L125 PetriNetUnfolderBase]: For 12272/12272 co-relation queries the response was YES. [2023-08-27 03:59:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20572 conditions, 4401 events. 2781/4401 cut-off events. For 12272/12272 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24657 event pairs, 492 based on Foata normal form. 0/4363 useless extension candidates. Maximal degree in co-relation 20549. Up to 2225 conditions per place. [2023-08-27 03:59:17,518 INFO L140 encePairwiseOnDemand]: 219/226 looper letters, 142 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2023-08-27 03:59:17,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 150 transitions, 1352 flow [2023-08-27 03:59:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 437 transitions. [2023-08-27 03:59:17,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834070796460177 [2023-08-27 03:59:17,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 437 transitions. [2023-08-27 03:59:17,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 437 transitions. [2023-08-27 03:59:17,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:17,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 437 transitions. [2023-08-27 03:59:17,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:17,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:17,523 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:17,523 INFO L175 Difference]: Start difference. First operand has 58 places, 73 transitions, 507 flow. Second operand 4 states and 437 transitions. [2023-08-27 03:59:17,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 150 transitions, 1352 flow [2023-08-27 03:59:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 150 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:17,533 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 546 flow [2023-08-27 03:59:17,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2023-08-27 03:59:17,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 03:59:17,534 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 546 flow [2023-08-27 03:59:17,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:17,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:17,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:59:17,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:17,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:17,535 INFO L85 PathProgramCache]: Analyzing trace with hash 307854672, now seen corresponding path program 1 times [2023-08-27 03:59:17,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:17,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088533304] [2023-08-27 03:59:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:17,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:18,420 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 03:59:18,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:18,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088533304] [2023-08-27 03:59:18,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088533304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:18,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:18,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:18,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962825250] [2023-08-27 03:59:18,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:18,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 03:59:18,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:18,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 03:59:18,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 03:59:18,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 03:59:18,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:18,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:18,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 03:59:18,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:19,071 INFO L124 PetriNetUnfolderBase]: 2955/4682 cut-off events. [2023-08-27 03:59:19,071 INFO L125 PetriNetUnfolderBase]: For 14390/14390 co-relation queries the response was YES. [2023-08-27 03:59:19,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23146 conditions, 4682 events. 2955/4682 cut-off events. For 14390/14390 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26389 event pairs, 1048 based on Foata normal form. 14/4660 useless extension candidates. Maximal degree in co-relation 23122. Up to 4349 conditions per place. [2023-08-27 03:59:19,095 INFO L140 encePairwiseOnDemand]: 220/226 looper letters, 102 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2023-08-27 03:59:19,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 113 transitions, 1013 flow [2023-08-27 03:59:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 495 transitions. [2023-08-27 03:59:19,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43805309734513276 [2023-08-27 03:59:19,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 495 transitions. [2023-08-27 03:59:19,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 495 transitions. [2023-08-27 03:59:19,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:19,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 495 transitions. [2023-08-27 03:59:19,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.0) internal successors, (495), 5 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:19,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:19,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 226.0) internal successors, (1356), 6 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:19,101 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 546 flow. Second operand 5 states and 495 transitions. [2023-08-27 03:59:19,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 113 transitions, 1013 flow [2023-08-27 03:59:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 991 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:19,111 INFO L231 Difference]: Finished difference. Result has 64 places, 82 transitions, 622 flow [2023-08-27 03:59:19,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=622, PETRI_PLACES=64, PETRI_TRANSITIONS=82} [2023-08-27 03:59:19,112 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-27 03:59:19,112 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 82 transitions, 622 flow [2023-08-27 03:59:19,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:19,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:19,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:59:19,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:19,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash -400958462, now seen corresponding path program 1 times [2023-08-27 03:59:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194183971] [2023-08-27 03:59:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:20,359 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 03:59:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:20,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194183971] [2023-08-27 03:59:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194183971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:20,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 03:59:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919623583] [2023-08-27 03:59:20,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:20,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 03:59:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:20,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 03:59:20,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-27 03:59:20,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 226 [2023-08-27 03:59:20,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 82 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:20,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:20,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 226 [2023-08-27 03:59:20,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:21,675 INFO L124 PetriNetUnfolderBase]: 4008/6390 cut-off events. [2023-08-27 03:59:21,675 INFO L125 PetriNetUnfolderBase]: For 18979/18979 co-relation queries the response was YES. [2023-08-27 03:59:21,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31092 conditions, 6390 events. 4008/6390 cut-off events. For 18979/18979 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 38896 event pairs, 540 based on Foata normal form. 45/6383 useless extension candidates. Maximal degree in co-relation 31066. Up to 3857 conditions per place. [2023-08-27 03:59:21,707 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 147 selfloop transitions, 61 changer transitions 3/212 dead transitions. [2023-08-27 03:59:21,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 212 transitions, 2014 flow [2023-08-27 03:59:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 03:59:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 03:59:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 804 transitions. [2023-08-27 03:59:21,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446902654867257 [2023-08-27 03:59:21,711 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 804 transitions. [2023-08-27 03:59:21,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 804 transitions. [2023-08-27 03:59:21,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:21,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 804 transitions. [2023-08-27 03:59:21,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:21,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:21,716 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:21,716 INFO L175 Difference]: Start difference. First operand has 64 places, 82 transitions, 622 flow. Second operand 8 states and 804 transitions. [2023-08-27 03:59:21,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 212 transitions, 2014 flow [2023-08-27 03:59:21,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 212 transitions, 2001 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:21,738 INFO L231 Difference]: Finished difference. Result has 74 places, 129 transitions, 1304 flow [2023-08-27 03:59:21,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1304, PETRI_PLACES=74, PETRI_TRANSITIONS=129} [2023-08-27 03:59:21,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-27 03:59:21,739 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 129 transitions, 1304 flow [2023-08-27 03:59:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:21,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:21,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:21,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:59:21,740 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:21,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1254352768, now seen corresponding path program 2 times [2023-08-27 03:59:21,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:21,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179300266] [2023-08-27 03:59:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:22,134 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 03:59:22,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:22,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179300266] [2023-08-27 03:59:22,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179300266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:22,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:22,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:22,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107704559] [2023-08-27 03:59:22,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:22,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 03:59:22,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:22,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 03:59:22,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 03:59:22,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 03:59:22,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 129 transitions, 1304 flow. Second operand has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:22,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:22,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 03:59:22,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:23,563 INFO L124 PetriNetUnfolderBase]: 5046/8154 cut-off events. [2023-08-27 03:59:23,564 INFO L125 PetriNetUnfolderBase]: For 39750/39750 co-relation queries the response was YES. [2023-08-27 03:59:23,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45395 conditions, 8154 events. 5046/8154 cut-off events. For 39750/39750 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 52931 event pairs, 622 based on Foata normal form. 79/8145 useless extension candidates. Maximal degree in co-relation 45364. Up to 4243 conditions per place. [2023-08-27 03:59:23,609 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 188 selfloop transitions, 47 changer transitions 3/239 dead transitions. [2023-08-27 03:59:23,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 239 transitions, 2754 flow [2023-08-27 03:59:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 03:59:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 03:59:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2023-08-27 03:59:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45298672566371684 [2023-08-27 03:59:23,612 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2023-08-27 03:59:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2023-08-27 03:59:23,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:23,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2023-08-27 03:59:23,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.375) internal successors, (819), 8 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:23,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:23,617 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:23,617 INFO L175 Difference]: Start difference. First operand has 74 places, 129 transitions, 1304 flow. Second operand 8 states and 819 transitions. [2023-08-27 03:59:23,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 239 transitions, 2754 flow [2023-08-27 03:59:23,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 239 transitions, 2736 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-27 03:59:23,678 INFO L231 Difference]: Finished difference. Result has 85 places, 151 transitions, 1758 flow [2023-08-27 03:59:23,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1758, PETRI_PLACES=85, PETRI_TRANSITIONS=151} [2023-08-27 03:59:23,679 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-27 03:59:23,679 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 151 transitions, 1758 flow [2023-08-27 03:59:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.14285714285714) internal successors, (645), 7 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:23,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:23,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:59:23,680 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:23,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 953558812, now seen corresponding path program 3 times [2023-08-27 03:59:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165440688] [2023-08-27 03:59:23,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:23,863 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 03:59:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165440688] [2023-08-27 03:59:23,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165440688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:59:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457838107] [2023-08-27 03:59:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:23,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 03:59:23,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 151 transitions, 1758 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:23,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:23,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 03:59:23,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:24,747 INFO L124 PetriNetUnfolderBase]: 3591/6013 cut-off events. [2023-08-27 03:59:24,748 INFO L125 PetriNetUnfolderBase]: For 61506/61506 co-relation queries the response was YES. [2023-08-27 03:59:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37556 conditions, 6013 events. 3591/6013 cut-off events. For 61506/61506 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39111 event pairs, 770 based on Foata normal form. 376/6286 useless extension candidates. Maximal degree in co-relation 37519. Up to 2781 conditions per place. [2023-08-27 03:59:24,783 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 249 selfloop transitions, 14 changer transitions 0/264 dead transitions. [2023-08-27 03:59:24,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 264 transitions, 3644 flow [2023-08-27 03:59:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 625 transitions. [2023-08-27 03:59:24,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609144542772861 [2023-08-27 03:59:24,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 625 transitions. [2023-08-27 03:59:24,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 625 transitions. [2023-08-27 03:59:24,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:24,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 625 transitions. [2023-08-27 03:59:24,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:24,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:24,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:24,790 INFO L175 Difference]: Start difference. First operand has 85 places, 151 transitions, 1758 flow. Second operand 6 states and 625 transitions. [2023-08-27 03:59:24,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 264 transitions, 3644 flow [2023-08-27 03:59:24,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 264 transitions, 3509 flow, removed 51 selfloop flow, removed 3 redundant places. [2023-08-27 03:59:24,855 INFO L231 Difference]: Finished difference. Result has 89 places, 141 transitions, 1604 flow [2023-08-27 03:59:24,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1604, PETRI_PLACES=89, PETRI_TRANSITIONS=141} [2023-08-27 03:59:24,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2023-08-27 03:59:24,856 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 141 transitions, 1604 flow [2023-08-27 03:59:24,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:24,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:24,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:24,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:59:24,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:24,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:24,857 INFO L85 PathProgramCache]: Analyzing trace with hash 505644869, now seen corresponding path program 1 times [2023-08-27 03:59:24,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:24,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802989414] [2023-08-27 03:59:24,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:24,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:25,804 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 03:59:25,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:25,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802989414] [2023-08-27 03:59:25,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802989414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:25,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:25,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 03:59:25,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316646142] [2023-08-27 03:59:25,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 03:59:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 03:59:25,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 03:59:25,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 226 [2023-08-27 03:59:25,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 141 transitions, 1604 flow. Second operand has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:25,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:25,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 226 [2023-08-27 03:59:25,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:26,965 INFO L124 PetriNetUnfolderBase]: 4056/6837 cut-off events. [2023-08-27 03:59:26,965 INFO L125 PetriNetUnfolderBase]: For 61654/61654 co-relation queries the response was YES. [2023-08-27 03:59:26,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44706 conditions, 6837 events. 4056/6837 cut-off events. For 61654/61654 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 45492 event pairs, 667 based on Foata normal form. 15/6851 useless extension candidates. Maximal degree in co-relation 44667. Up to 4106 conditions per place. [2023-08-27 03:59:27,012 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 153 selfloop transitions, 57 changer transitions 3/214 dead transitions. [2023-08-27 03:59:27,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 214 transitions, 2787 flow [2023-08-27 03:59:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 619 transitions. [2023-08-27 03:59:27,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564896755162242 [2023-08-27 03:59:27,014 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 619 transitions. [2023-08-27 03:59:27,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 619 transitions. [2023-08-27 03:59:27,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:27,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 619 transitions. [2023-08-27 03:59:27,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.16666666666667) internal successors, (619), 6 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:27,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:27,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:27,018 INFO L175 Difference]: Start difference. First operand has 89 places, 141 transitions, 1604 flow. Second operand 6 states and 619 transitions. [2023-08-27 03:59:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 214 transitions, 2787 flow [2023-08-27 03:59:27,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 214 transitions, 2744 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:27,123 INFO L231 Difference]: Finished difference. Result has 94 places, 150 transitions, 1921 flow [2023-08-27 03:59:27,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1921, PETRI_PLACES=94, PETRI_TRANSITIONS=150} [2023-08-27 03:59:27,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 52 predicate places. [2023-08-27 03:59:27,124 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 150 transitions, 1921 flow [2023-08-27 03:59:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.25) internal successors, (730), 8 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:27,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:27,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:59:27,125 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:27,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1907839605, now seen corresponding path program 2 times [2023-08-27 03:59:27,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:27,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656222508] [2023-08-27 03:59:27,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:27,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:28,446 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 03:59:28,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656222508] [2023-08-27 03:59:28,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656222508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:28,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:28,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 03:59:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128349442] [2023-08-27 03:59:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 03:59:28,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 03:59:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 03:59:28,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 03:59:28,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 150 transitions, 1921 flow. Second operand has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:28,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:28,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 03:59:28,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:30,211 INFO L124 PetriNetUnfolderBase]: 6257/10929 cut-off events. [2023-08-27 03:59:30,211 INFO L125 PetriNetUnfolderBase]: For 100455/100455 co-relation queries the response was YES. [2023-08-27 03:59:30,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72461 conditions, 10929 events. 6257/10929 cut-off events. For 100455/100455 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 82938 event pairs, 257 based on Foata normal form. 19/10948 useless extension candidates. Maximal degree in co-relation 72419. Up to 5053 conditions per place. [2023-08-27 03:59:30,296 INFO L140 encePairwiseOnDemand]: 212/226 looper letters, 208 selfloop transitions, 99 changer transitions 6/314 dead transitions. [2023-08-27 03:59:30,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 314 transitions, 4391 flow [2023-08-27 03:59:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 03:59:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 03:59:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 913 transitions. [2023-08-27 03:59:30,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488692232055064 [2023-08-27 03:59:30,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 913 transitions. [2023-08-27 03:59:30,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 913 transitions. [2023-08-27 03:59:30,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:30,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 913 transitions. [2023-08-27 03:59:30,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.44444444444444) internal successors, (913), 9 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:30,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:30,307 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 226.0) internal successors, (2260), 10 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:30,307 INFO L175 Difference]: Start difference. First operand has 94 places, 150 transitions, 1921 flow. Second operand 9 states and 913 transitions. [2023-08-27 03:59:30,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 314 transitions, 4391 flow [2023-08-27 03:59:30,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 314 transitions, 4279 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-08-27 03:59:30,450 INFO L231 Difference]: Finished difference. Result has 103 places, 213 transitions, 3240 flow [2023-08-27 03:59:30,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3240, PETRI_PLACES=103, PETRI_TRANSITIONS=213} [2023-08-27 03:59:30,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-08-27 03:59:30,450 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 213 transitions, 3240 flow [2023-08-27 03:59:30,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.8) internal successors, (898), 10 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:30,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:30,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:30,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 03:59:30,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:30,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1688775431, now seen corresponding path program 3 times [2023-08-27 03:59:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:30,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029196181] [2023-08-27 03:59:30,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:30,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:31,720 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 03:59:31,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:31,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029196181] [2023-08-27 03:59:31,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029196181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:31,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:31,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 03:59:31,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163943901] [2023-08-27 03:59:31,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:31,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 03:59:31,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 03:59:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 03:59:31,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 226 [2023-08-27 03:59:31,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 213 transitions, 3240 flow. Second operand has 8 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:31,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:31,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 226 [2023-08-27 03:59:31,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:33,652 INFO L124 PetriNetUnfolderBase]: 6768/11839 cut-off events. [2023-08-27 03:59:33,652 INFO L125 PetriNetUnfolderBase]: For 156577/156577 co-relation queries the response was YES. [2023-08-27 03:59:33,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88354 conditions, 11839 events. 6768/11839 cut-off events. For 156577/156577 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 90896 event pairs, 1147 based on Foata normal form. 18/11855 useless extension candidates. Maximal degree in co-relation 88308. Up to 6480 conditions per place. [2023-08-27 03:59:33,739 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 237 selfloop transitions, 62 changer transitions 3/303 dead transitions. [2023-08-27 03:59:33,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 303 transitions, 4966 flow [2023-08-27 03:59:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 612 transitions. [2023-08-27 03:59:33,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45132743362831856 [2023-08-27 03:59:33,742 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 612 transitions. [2023-08-27 03:59:33,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 612 transitions. [2023-08-27 03:59:33,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:33,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 612 transitions. [2023-08-27 03:59:33,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.0) internal successors, (612), 6 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:33,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:33,746 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:33,746 INFO L175 Difference]: Start difference. First operand has 103 places, 213 transitions, 3240 flow. Second operand 6 states and 612 transitions. [2023-08-27 03:59:33,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 303 transitions, 4966 flow [2023-08-27 03:59:34,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 303 transitions, 4519 flow, removed 223 selfloop flow, removed 1 redundant places. [2023-08-27 03:59:34,086 INFO L231 Difference]: Finished difference. Result has 109 places, 221 transitions, 3280 flow [2023-08-27 03:59:34,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3280, PETRI_PLACES=109, PETRI_TRANSITIONS=221} [2023-08-27 03:59:34,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-27 03:59:34,087 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 221 transitions, 3280 flow [2023-08-27 03:59:34,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:34,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:34,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:34,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 03:59:34,087 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:34,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:34,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2078469347, now seen corresponding path program 4 times [2023-08-27 03:59:34,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:34,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760805211] [2023-08-27 03:59:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:35,716 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 03:59:35,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:35,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760805211] [2023-08-27 03:59:35,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760805211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:35,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:35,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 03:59:35,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381743495] [2023-08-27 03:59:35,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:35,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 03:59:35,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:35,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 03:59:35,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 03:59:35,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-27 03:59:35,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 221 transitions, 3280 flow. Second operand has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:35,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:35,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-27 03:59:35,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:37,876 INFO L124 PetriNetUnfolderBase]: 7613/13416 cut-off events. [2023-08-27 03:59:37,876 INFO L125 PetriNetUnfolderBase]: For 146899/146899 co-relation queries the response was YES. [2023-08-27 03:59:37,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92821 conditions, 13416 events. 7613/13416 cut-off events. For 146899/146899 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 106493 event pairs, 1106 based on Foata normal form. 16/13432 useless extension candidates. Maximal degree in co-relation 92772. Up to 6373 conditions per place. [2023-08-27 03:59:37,975 INFO L140 encePairwiseOnDemand]: 216/226 looper letters, 272 selfloop transitions, 53 changer transitions 3/329 dead transitions. [2023-08-27 03:59:37,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 329 transitions, 5156 flow [2023-08-27 03:59:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 598 transitions. [2023-08-27 03:59:37,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410029498525074 [2023-08-27 03:59:37,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 598 transitions. [2023-08-27 03:59:37,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 598 transitions. [2023-08-27 03:59:37,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:37,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 598 transitions. [2023-08-27 03:59:37,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:37,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:37,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:37,981 INFO L175 Difference]: Start difference. First operand has 109 places, 221 transitions, 3280 flow. Second operand 6 states and 598 transitions. [2023-08-27 03:59:37,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 329 transitions, 5156 flow [2023-08-27 03:59:38,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 329 transitions, 5078 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 03:59:38,336 INFO L231 Difference]: Finished difference. Result has 113 places, 229 transitions, 3508 flow [2023-08-27 03:59:38,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3508, PETRI_PLACES=113, PETRI_TRANSITIONS=229} [2023-08-27 03:59:38,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-08-27 03:59:38,337 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 229 transitions, 3508 flow [2023-08-27 03:59:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 87.8) internal successors, (878), 10 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:38,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:38,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:38,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 03:59:38,337 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:38,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:38,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1643390482, now seen corresponding path program 1 times [2023-08-27 03:59:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:38,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112059807] [2023-08-27 03:59:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:38,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:38,582 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 03:59:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112059807] [2023-08-27 03:59:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112059807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268536050] [2023-08-27 03:59:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:59:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:59:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:59:38,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 226 [2023-08-27 03:59:38,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 229 transitions, 3508 flow. Second operand has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:38,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:38,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 226 [2023-08-27 03:59:38,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:40,787 INFO L124 PetriNetUnfolderBase]: 7028/12042 cut-off events. [2023-08-27 03:59:40,787 INFO L125 PetriNetUnfolderBase]: For 164078/164078 co-relation queries the response was YES. [2023-08-27 03:59:40,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84489 conditions, 12042 events. 7028/12042 cut-off events. For 164078/164078 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 94356 event pairs, 1134 based on Foata normal form. 513/12554 useless extension candidates. Maximal degree in co-relation 84438. Up to 5267 conditions per place. [2023-08-27 03:59:40,877 INFO L140 encePairwiseOnDemand]: 217/226 looper letters, 252 selfloop transitions, 11 changer transitions 124/388 dead transitions. [2023-08-27 03:59:40,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 388 transitions, 6867 flow [2023-08-27 03:59:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 606 transitions. [2023-08-27 03:59:40,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469026548672566 [2023-08-27 03:59:40,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 606 transitions. [2023-08-27 03:59:40,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 606 transitions. [2023-08-27 03:59:40,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:40,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 606 transitions. [2023-08-27 03:59:40,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:40,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:40,884 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 226.0) internal successors, (1582), 7 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:40,884 INFO L175 Difference]: Start difference. First operand has 113 places, 229 transitions, 3508 flow. Second operand 6 states and 606 transitions. [2023-08-27 03:59:40,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 388 transitions, 6867 flow [2023-08-27 03:59:41,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 388 transitions, 6323 flow, removed 78 selfloop flow, removed 7 redundant places. [2023-08-27 03:59:41,229 INFO L231 Difference]: Finished difference. Result has 109 places, 148 transitions, 2106 flow [2023-08-27 03:59:41,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2106, PETRI_PLACES=109, PETRI_TRANSITIONS=148} [2023-08-27 03:59:41,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2023-08-27 03:59:41,230 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 148 transitions, 2106 flow [2023-08-27 03:59:41,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.33333333333333) internal successors, (560), 6 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:41,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:41,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 03:59:41,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:41,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:41,231 INFO L85 PathProgramCache]: Analyzing trace with hash 785176123, now seen corresponding path program 1 times [2023-08-27 03:59:41,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:41,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218660393] [2023-08-27 03:59:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:41,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:43,021 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 03:59:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:43,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218660393] [2023-08-27 03:59:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218660393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:43,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:43,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-27 03:59:43,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925080215] [2023-08-27 03:59:43,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:43,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 03:59:43,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 03:59:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-27 03:59:43,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 226 [2023-08-27 03:59:43,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 148 transitions, 2106 flow. Second operand has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 226 [2023-08-27 03:59:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:44,143 INFO L124 PetriNetUnfolderBase]: 1759/3430 cut-off events. [2023-08-27 03:59:44,143 INFO L125 PetriNetUnfolderBase]: For 44619/44619 co-relation queries the response was YES. [2023-08-27 03:59:44,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26371 conditions, 3430 events. 1759/3430 cut-off events. For 44619/44619 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24506 event pairs, 281 based on Foata normal form. 1/3430 useless extension candidates. Maximal degree in co-relation 26321. Up to 1722 conditions per place. [2023-08-27 03:59:44,166 INFO L140 encePairwiseOnDemand]: 214/226 looper letters, 124 selfloop transitions, 109 changer transitions 38/272 dead transitions. [2023-08-27 03:59:44,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 272 transitions, 4357 flow [2023-08-27 03:59:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 03:59:44,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 03:59:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 939 transitions. [2023-08-27 03:59:44,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154867256637168 [2023-08-27 03:59:44,169 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 939 transitions. [2023-08-27 03:59:44,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 939 transitions. [2023-08-27 03:59:44,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:44,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 939 transitions. [2023-08-27 03:59:44,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 93.9) internal successors, (939), 10 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:44,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 226.0) internal successors, (2486), 11 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:44,174 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 226.0) internal successors, (2486), 11 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:44,175 INFO L175 Difference]: Start difference. First operand has 109 places, 148 transitions, 2106 flow. Second operand 10 states and 939 transitions. [2023-08-27 03:59:44,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 272 transitions, 4357 flow [2023-08-27 03:59:44,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 272 transitions, 3693 flow, removed 137 selfloop flow, removed 18 redundant places. [2023-08-27 03:59:44,273 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 3013 flow [2023-08-27 03:59:44,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3013, PETRI_PLACES=102, PETRI_TRANSITIONS=198} [2023-08-27 03:59:44,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2023-08-27 03:59:44,274 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 3013 flow [2023-08-27 03:59:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 86.0909090909091) internal successors, (947), 11 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:44,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:44,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 03:59:44,275 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:44,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -847336671, now seen corresponding path program 2 times [2023-08-27 03:59:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:44,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930032481] [2023-08-27 03:59:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:45,600 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 03:59:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:45,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930032481] [2023-08-27 03:59:45,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930032481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:45,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:45,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 03:59:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151589284] [2023-08-27 03:59:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 03:59:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 03:59:45,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 03:59:45,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 226 [2023-08-27 03:59:45,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 198 transitions, 3013 flow. Second operand has 10 states, 10 states have (on average 88.3) internal successors, (883), 10 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:45,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:45,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 226 [2023-08-27 03:59:45,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:46,451 INFO L124 PetriNetUnfolderBase]: 2173/4377 cut-off events. [2023-08-27 03:59:46,452 INFO L125 PetriNetUnfolderBase]: For 50582/50582 co-relation queries the response was YES. [2023-08-27 03:59:46,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29226 conditions, 4377 events. 2173/4377 cut-off events. For 50582/50582 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34040 event pairs, 306 based on Foata normal form. 4/4380 useless extension candidates. Maximal degree in co-relation 29183. Up to 1840 conditions per place. [2023-08-27 03:59:46,474 INFO L140 encePairwiseOnDemand]: 215/226 looper letters, 78 selfloop transitions, 80 changer transitions 151/310 dead transitions. [2023-08-27 03:59:46,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 310 transitions, 5019 flow [2023-08-27 03:59:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 03:59:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 03:59:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-08-27 03:59:46,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42201327433628316 [2023-08-27 03:59:46,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-08-27 03:59:46,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-08-27 03:59:46,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:46,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-08-27 03:59:46,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:46,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:46,482 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 226.0) internal successors, (2034), 9 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:46,482 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 3013 flow. Second operand 8 states and 763 transitions. [2023-08-27 03:59:46,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 310 transitions, 5019 flow [2023-08-27 03:59:46,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 310 transitions, 4684 flow, removed 148 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:46,612 INFO L231 Difference]: Finished difference. Result has 111 places, 136 transitions, 2260 flow [2023-08-27 03:59:46,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=111, PETRI_TRANSITIONS=136} [2023-08-27 03:59:46,612 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-27 03:59:46,612 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 136 transitions, 2260 flow [2023-08-27 03:59:46,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.3) internal successors, (883), 10 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:46,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:46,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:46,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 03:59:46,613 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-08-27 03:59:46,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash -656049273, now seen corresponding path program 3 times [2023-08-27 03:59:46,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:46,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937590258] [2023-08-27 03:59:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:46,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:46,833 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 03:59:46,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:46,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937590258] [2023-08-27 03:59:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937590258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:46,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:59:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494424938] [2023-08-27 03:59:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:46,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 226 [2023-08-27 03:59:46,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 136 transitions, 2260 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:46,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:46,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 226 [2023-08-27 03:59:46,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:47,050 INFO L124 PetriNetUnfolderBase]: 480/961 cut-off events. [2023-08-27 03:59:47,050 INFO L125 PetriNetUnfolderBase]: For 15951/15951 co-relation queries the response was YES. [2023-08-27 03:59:47,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 961 events. 480/961 cut-off events. For 15951/15951 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5242 event pairs, 82 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7199. Up to 690 conditions per place. [2023-08-27 03:59:47,056 INFO L140 encePairwiseOnDemand]: 223/226 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-27 03:59:47,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 149 transitions, 2702 flow [2023-08-27 03:59:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-27 03:59:47,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502212389380531 [2023-08-27 03:59:47,058 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-27 03:59:47,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-27 03:59:47,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:47,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-27 03:59:47,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:47,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:47,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:47,061 INFO L175 Difference]: Start difference. First operand has 111 places, 136 transitions, 2260 flow. Second operand 4 states and 407 transitions. [2023-08-27 03:59:47,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 149 transitions, 2702 flow [2023-08-27 03:59:47,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 2274 flow, removed 87 selfloop flow, removed 22 redundant places. [2023-08-27 03:59:47,096 INFO L231 Difference]: Finished difference. Result has 85 places, 0 transitions, 0 flow [2023-08-27 03:59:47,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=85, PETRI_TRANSITIONS=0} [2023-08-27 03:59:47,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2023-08-27 03:59:47,097 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 0 transitions, 0 flow [2023-08-27 03:59:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:47,100 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-27 03:59:47,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2023-08-27 03:59:47,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONASSERT (2 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-27 03:59:47,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-27 03:59:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 03:59:47,104 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:47,110 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:59:47,110 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:59:47,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:59:47 BasicIcfg [2023-08-27 03:59:47,113 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:59:47,113 INFO L158 Benchmark]: Toolchain (without parser) took 46464.72ms. Allocated memory was 348.1MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 323.0MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 831.3MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,114 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:59:47,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.46ms. Allocated memory is still 348.1MB. Free memory was 322.5MB in the beginning and 295.1MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.36ms. Allocated memory is still 348.1MB. Free memory was 295.1MB in the beginning and 291.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,114 INFO L158 Benchmark]: Boogie Preprocessor took 53.43ms. Allocated memory is still 348.1MB. Free memory was 291.5MB in the beginning and 288.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,114 INFO L158 Benchmark]: RCFGBuilder took 789.66ms. Allocated memory is still 348.1MB. Free memory was 288.9MB in the beginning and 281.8MB in the end (delta: 7.1MB). Peak memory consumption was 30.1MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,115 INFO L158 Benchmark]: TraceAbstraction took 44979.93ms. Allocated memory was 348.1MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 280.8MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 788.6MB. Max. memory is 16.0GB. [2023-08-27 03:59:47,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 567.46ms. Allocated memory is still 348.1MB. Free memory was 322.5MB in the beginning and 295.1MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 69.36ms. Allocated memory is still 348.1MB. Free memory was 295.1MB in the beginning and 291.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.43ms. Allocated memory is still 348.1MB. Free memory was 291.5MB in the beginning and 288.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 789.66ms. Allocated memory is still 348.1MB. Free memory was 288.9MB in the beginning and 281.8MB in the end (delta: 7.1MB). Peak memory consumption was 30.1MB. Max. memory is 16.0GB. * TraceAbstraction took 44979.93ms. Allocated memory was 348.1MB in the beginning and 2.4GB in the end (delta: 2.1GB). Free memory was 280.8MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 788.6MB. 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: 5.0s, 126 PlacesBefore, 42 PlacesAfterwards, 119 TransitionsBefore, 32 TransitionsAfterwards, 3106 CoEnabledTransitionPairs, 7 FixpointIterations, 39 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 104 TotalNumberOfCompositions, 11681 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3696, independent: 3379, independent conditional: 0, independent unconditional: 3379, dependent: 317, dependent conditional: 0, dependent unconditional: 317, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1603, independent: 1540, independent conditional: 0, independent unconditional: 1540, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3696, independent: 1839, independent conditional: 0, independent unconditional: 1839, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 1603, unknown conditional: 0, unknown unconditional: 1603] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 129, Positive conditional cache size: 0, Positive unconditional cache size: 129, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 764]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 804]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 804]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 853]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 853]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 157 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 44.9s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 25.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 886 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 886 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 494 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3540 IncrementalHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 494 mSolverCounterUnsat, 6 mSDtfsCounter, 3540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3508occurred in iteration=16, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 295 ConstructedInterpolants, 0 QuantifiedInterpolants, 3276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:59:47,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...