/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/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:37:51,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:37:51,236 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 06:37:51,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:37:51,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:37:51,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:37:51,275 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:37:51,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:37:51,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:37:51,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:37:51,285 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:37:51,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:37:51,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:37:51,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:37:51,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:37:51,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:37:51,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:37:51,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:37:51,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:37:51,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:37:51,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:37:51,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:37:51,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:37:51,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:37:51,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:37:51,289 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:37:51,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:37:51,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:37:51,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:37:51,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:37:51,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:37:51,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:37:51,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:37:51,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:37:51,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:37:51,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:37:51,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:37:51,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:37:51,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:37:51,649 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:37:51,650 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:37:51,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-27 06:37:52,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:37:53,115 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:37:53,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-27 06:37:53,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382e27dd4/6d171c2dce024d8fae3b75df1cd4a4ab/FLAG957bb76a7 [2023-08-27 06:37:53,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382e27dd4/6d171c2dce024d8fae3b75df1cd4a4ab [2023-08-27 06:37:53,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:37:53,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:37:53,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:37:53,151 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:37:53,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:37:53,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35545786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53, skipping insertion in model container [2023-08-27 06:37:53,156 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,179 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:37:53,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:37:53,383 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:37:53,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:37:53,437 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:37:53,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53 WrapperNode [2023-08-27 06:37:53,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:37:53,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:37:53,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:37:53,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:37:53,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,498 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 233 [2023-08-27 06:37:53,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:37:53,499 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:37:53,499 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:37:53,499 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:37:53,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:37:53,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:37:53,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:37:53,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:37:53,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (1/1) ... [2023-08-27 06:37:53,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:37:53,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:37:53,582 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 06:37:53,610 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 06:37:53,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:37:53,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:37:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:37:53,625 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:37:53,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:37:53,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:37:53,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:37:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:37:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:37:53,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:37:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:37:53,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:37:53,628 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 06:37:53,724 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:37:53,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:37:54,214 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:37:54,224 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:37:54,224 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 06:37:54,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:37:54 BoogieIcfgContainer [2023-08-27 06:37:54,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:37:54,228 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:37:54,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:37:54,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:37:54,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:37:53" (1/3) ... [2023-08-27 06:37:54,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cfea43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:37:54, skipping insertion in model container [2023-08-27 06:37:54,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:37:53" (2/3) ... [2023-08-27 06:37:54,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cfea43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:37:54, skipping insertion in model container [2023-08-27 06:37:54,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:37:54" (3/3) ... [2023-08-27 06:37:54,234 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-08-27 06:37:54,250 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:37:54,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-08-27 06:37:54,250 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:37:54,408 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 06:37:54,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 295 transitions, 606 flow [2023-08-27 06:37:54,539 INFO L124 PetriNetUnfolderBase]: 22/293 cut-off events. [2023-08-27 06:37:54,539 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:37:54,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 293 events. 22/293 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 617 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-27 06:37:54,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 295 transitions, 606 flow [2023-08-27 06:37:54,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 580 flow [2023-08-27 06:37:54,563 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:37:54,576 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 284 transitions, 580 flow [2023-08-27 06:37:54,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 284 transitions, 580 flow [2023-08-27 06:37:54,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 580 flow [2023-08-27 06:37:54,638 INFO L124 PetriNetUnfolderBase]: 22/284 cut-off events. [2023-08-27 06:37:54,638 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 06:37:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 284 events. 22/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 575 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 217. Up to 2 conditions per place. [2023-08-27 06:37:54,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 24308 [2023-08-27 06:38:16,886 INFO L134 LiptonReduction]: Checked pairs total: 23537 [2023-08-27 06:38:16,887 INFO L136 LiptonReduction]: Total number of compositions: 396 [2023-08-27 06:38:16,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:38:16,902 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;@108b3e39, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:38:16,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-27 06:38:16,907 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:38:16,907 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 06:38:16,907 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:38:16,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:16,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 06:38:16,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:16,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash 40231570, now seen corresponding path program 1 times [2023-08-27 06:38:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:16,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512282268] [2023-08-27 06:38:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:17,101 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 06:38:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512282268] [2023-08-27 06:38:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512282268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608529646] [2023-08-27 06:38:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:17,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:17,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:17,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:17,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:17,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 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 06:38:17,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:17,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:17,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:17,374 INFO L124 PetriNetUnfolderBase]: 476/675 cut-off events. [2023-08-27 06:38:17,375 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 06:38:17,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 675 events. 476/675 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 2969 event pairs, 222 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 1238. Up to 667 conditions per place. [2023-08-27 06:38:17,382 INFO L140 encePairwiseOnDemand]: 674/691 looper letters, 24 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-27 06:38:17,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 116 flow [2023-08-27 06:38:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-27 06:38:17,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41341051616015434 [2023-08-27 06:38:17,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-27 06:38:17,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-27 06:38:17,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:17,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-27 06:38:17,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,424 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 98 flow. Second operand 3 states and 857 transitions. [2023-08-27 06:38:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 116 flow [2023-08-27 06:38:17,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:17,429 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 60 flow [2023-08-27 06:38:17,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-27 06:38:17,433 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -18 predicate places. [2023-08-27 06:38:17,434 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 60 flow [2023-08-27 06:38:17,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 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 06:38:17,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:17,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 06:38:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:38:17,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:17,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash 40231660, now seen corresponding path program 1 times [2023-08-27 06:38:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343420639] [2023-08-27 06:38:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:17,579 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 06:38:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:17,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343420639] [2023-08-27 06:38:17,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343420639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:17,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:38:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173489780] [2023-08-27 06:38:17,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:17,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:17,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:17,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:17,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:17,792 INFO L124 PetriNetUnfolderBase]: 600/887 cut-off events. [2023-08-27 06:38:17,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:38:17,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 887 events. 600/887 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 4318 event pairs, 139 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 1782. Up to 606 conditions per place. [2023-08-27 06:38:17,796 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 40 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-27 06:38:17,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 181 flow [2023-08-27 06:38:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2023-08-27 06:38:17,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153400868306802 [2023-08-27 06:38:17,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2023-08-27 06:38:17,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2023-08-27 06:38:17,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:17,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2023-08-27 06:38:17,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,806 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,806 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 861 transitions. [2023-08-27 06:38:17,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 181 flow [2023-08-27 06:38:17,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:17,808 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2023-08-27 06:38:17,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2023-08-27 06:38:17,809 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -16 predicate places. [2023-08-27 06:38:17,809 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2023-08-27 06:38:17,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:17,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:17,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 06:38:17,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 06:38:17,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:17,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:17,811 INFO L85 PathProgramCache]: Analyzing trace with hash 40231624, now seen corresponding path program 1 times [2023-08-27 06:38:17,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:17,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145950961] [2023-08-27 06:38:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:17,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:17,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:17,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145950961] [2023-08-27 06:38:17,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145950961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:17,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:17,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:17,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129955527] [2023-08-27 06:38:17,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:17,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:17,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:17,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:17,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:17,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:17,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 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 06:38:17,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:17,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:17,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:18,039 INFO L124 PetriNetUnfolderBase]: 436/658 cut-off events. [2023-08-27 06:38:18,039 INFO L125 PetriNetUnfolderBase]: For 41/60 co-relation queries the response was YES. [2023-08-27 06:38:18,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 658 events. 436/658 cut-off events. For 41/60 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 3265 event pairs, 254 based on Foata normal form. 19/262 useless extension candidates. Maximal degree in co-relation 1487. Up to 652 conditions per place. [2023-08-27 06:38:18,043 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 25 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-27 06:38:18,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 130 flow [2023-08-27 06:38:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 841 transitions. [2023-08-27 06:38:18,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056922334780511 [2023-08-27 06:38:18,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 841 transitions. [2023-08-27 06:38:18,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 841 transitions. [2023-08-27 06:38:18,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:18,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 841 transitions. [2023-08-27 06:38:18,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.3333333333333) internal successors, (841), 3 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,052 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 3 states and 841 transitions. [2023-08-27 06:38:18,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 130 flow [2023-08-27 06:38:18,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:18,054 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 77 flow [2023-08-27 06:38:18,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-27 06:38:18,054 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -16 predicate places. [2023-08-27 06:38:18,055 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 77 flow [2023-08-27 06:38:18,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 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 06:38:18,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:18,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 06:38:18,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 06:38:18,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:18,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:18,056 INFO L85 PathProgramCache]: Analyzing trace with hash 40231621, now seen corresponding path program 1 times [2023-08-27 06:38:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:18,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237184770] [2023-08-27 06:38:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:18,106 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 06:38:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237184770] [2023-08-27 06:38:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237184770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616232348] [2023-08-27 06:38:18,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:18,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 691 [2023-08-27 06:38:18,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:18,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 691 [2023-08-27 06:38:18,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:18,218 INFO L124 PetriNetUnfolderBase]: 351/529 cut-off events. [2023-08-27 06:38:18,218 INFO L125 PetriNetUnfolderBase]: For 40/59 co-relation queries the response was YES. [2023-08-27 06:38:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 529 events. 351/529 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 2481 event pairs, 197 based on Foata normal form. 19/233 useless extension candidates. Maximal degree in co-relation 1186. Up to 524 conditions per place. [2023-08-27 06:38:18,221 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 24 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-27 06:38:18,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 125 flow [2023-08-27 06:38:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 837 transitions. [2023-08-27 06:38:18,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037626628075253 [2023-08-27 06:38:18,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 837 transitions. [2023-08-27 06:38:18,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 837 transitions. [2023-08-27 06:38:18,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:18,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 837 transitions. [2023-08-27 06:38:18,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.0) internal successors, (837), 3 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,231 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 77 flow. Second operand 3 states and 837 transitions. [2023-08-27 06:38:18,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 125 flow [2023-08-27 06:38:18,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:18,232 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 76 flow [2023-08-27 06:38:18,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-27 06:38:18,233 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -16 predicate places. [2023-08-27 06:38:18,233 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 76 flow [2023-08-27 06:38:18,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:18,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 06:38:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:38:18,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:18,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash 40231623, now seen corresponding path program 1 times [2023-08-27 06:38:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:18,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080956770] [2023-08-27 06:38:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:18,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:18,267 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 06:38:18,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:18,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080956770] [2023-08-27 06:38:18,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080956770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:18,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:18,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:18,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950341443] [2023-08-27 06:38:18,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:18,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 691 [2023-08-27 06:38:18,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:18,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 691 [2023-08-27 06:38:18,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:18,365 INFO L124 PetriNetUnfolderBase]: 266/400 cut-off events. [2023-08-27 06:38:18,366 INFO L125 PetriNetUnfolderBase]: For 40/59 co-relation queries the response was YES. [2023-08-27 06:38:18,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 400 events. 266/400 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 1710 event pairs, 140 based on Foata normal form. 60/204 useless extension candidates. Maximal degree in co-relation 927. Up to 396 conditions per place. [2023-08-27 06:38:18,368 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 23 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-27 06:38:18,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 122 flow [2023-08-27 06:38:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:18,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-08-27 06:38:18,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40328027013989387 [2023-08-27 06:38:18,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-08-27 06:38:18,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-08-27 06:38:18,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:18,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-08-27 06:38:18,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,378 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 76 flow. Second operand 3 states and 836 transitions. [2023-08-27 06:38:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 122 flow [2023-08-27 06:38:18,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 119 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:18,379 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2023-08-27 06:38:18,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-27 06:38:18,380 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -16 predicate places. [2023-08-27 06:38:18,380 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2023-08-27 06:38:18,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:18,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 06:38:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 06:38:18,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:18,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1247182808, now seen corresponding path program 1 times [2023-08-27 06:38:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:18,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338531749] [2023-08-27 06:38:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338531749] [2023-08-27 06:38:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338531749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066514590] [2023-08-27 06:38:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:18,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:18,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:18,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 06:38:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:18,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:18,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:18,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:18,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066514590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:18,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:18,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 06:38:18,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641713774] [2023-08-27 06:38:18,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:18,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:38:18,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:38:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:38:18,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:18,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 7 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:18,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:18,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:18,953 INFO L124 PetriNetUnfolderBase]: 591/812 cut-off events. [2023-08-27 06:38:18,953 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 06:38:18,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 812 events. 591/812 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3214 event pairs, 111 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 1954. Up to 396 conditions per place. [2023-08-27 06:38:18,958 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 81 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2023-08-27 06:38:18,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 95 transitions, 422 flow [2023-08-27 06:38:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-08-27 06:38:18,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41368616911308664 [2023-08-27 06:38:18,963 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-08-27 06:38:18,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-08-27 06:38:18,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:18,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-08-27 06:38:18,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,976 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,976 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 7 states and 2001 transitions. [2023-08-27 06:38:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 95 transitions, 422 flow [2023-08-27 06:38:18,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 95 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:18,978 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 156 flow [2023-08-27 06:38:18,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-27 06:38:18,979 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:18,979 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 156 flow [2023-08-27 06:38:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:18,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:18,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 06:38:18,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:19,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 06:38:19,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:19,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 7962731, now seen corresponding path program 1 times [2023-08-27 06:38:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:19,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611977393] [2023-08-27 06:38:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:19,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:19,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:19,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611977393] [2023-08-27 06:38:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611977393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:19,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292691481] [2023-08-27 06:38:19,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:19,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:19,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:19,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:19,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 06:38:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:19,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:38:19,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:19,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:38:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292691481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:19,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:38:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-27 06:38:19,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369765432] [2023-08-27 06:38:19,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:19,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:19,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:19,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:19,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:38:19,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:19,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:19,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:19,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:19,660 INFO L124 PetriNetUnfolderBase]: 490/689 cut-off events. [2023-08-27 06:38:19,661 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2023-08-27 06:38:19,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 689 events. 490/689 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2806 event pairs, 19 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 2063. Up to 302 conditions per place. [2023-08-27 06:38:19,665 INFO L140 encePairwiseOnDemand]: 687/691 looper letters, 58 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-08-27 06:38:19,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 336 flow [2023-08-27 06:38:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1424 transitions. [2023-08-27 06:38:19,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121562952243126 [2023-08-27 06:38:19,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1424 transitions. [2023-08-27 06:38:19,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1424 transitions. [2023-08-27 06:38:19,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:19,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1424 transitions. [2023-08-27 06:38:19,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.8) internal successors, (1424), 5 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:19,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:19,683 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:19,683 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 156 flow. Second operand 5 states and 1424 transitions. [2023-08-27 06:38:19,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 336 flow [2023-08-27 06:38:19,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 315 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:19,689 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 124 flow [2023-08-27 06:38:19,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-27 06:38:19,690 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -7 predicate places. [2023-08-27 06:38:19,690 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 124 flow [2023-08-27 06:38:19,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:19,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:19,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:38:19,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:19,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-27 06:38:19,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:19,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash 21657742, now seen corresponding path program 1 times [2023-08-27 06:38:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:19,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667718081] [2023-08-27 06:38:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:19,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,008 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 06:38:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667718081] [2023-08-27 06:38:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667718081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:20,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108411312] [2023-08-27 06:38:20,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 691 [2023-08-27 06:38:20,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 691 [2023-08-27 06:38:20,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:20,128 INFO L124 PetriNetUnfolderBase]: 342/488 cut-off events. [2023-08-27 06:38:20,129 INFO L125 PetriNetUnfolderBase]: For 398/428 co-relation queries the response was YES. [2023-08-27 06:38:20,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 488 events. 342/488 cut-off events. For 398/428 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1843 event pairs, 159 based on Foata normal form. 30/339 useless extension candidates. Maximal degree in co-relation 1456. Up to 484 conditions per place. [2023-08-27 06:38:20,132 INFO L140 encePairwiseOnDemand]: 688/691 looper letters, 26 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-27 06:38:20,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 174 flow [2023-08-27 06:38:20,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-08-27 06:38:20,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402315484804631 [2023-08-27 06:38:20,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:20,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,140 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 124 flow. Second operand 3 states and 834 transitions. [2023-08-27 06:38:20,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 174 flow [2023-08-27 06:38:20,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:20,144 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 110 flow [2023-08-27 06:38:20,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-27 06:38:20,146 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -10 predicate places. [2023-08-27 06:38:20,147 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 110 flow [2023-08-27 06:38:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:20,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:38:20,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 06:38:20,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:20,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash 21657753, now seen corresponding path program 1 times [2023-08-27 06:38:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:20,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935403880] [2023-08-27 06:38:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:20,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,193 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 06:38:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935403880] [2023-08-27 06:38:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935403880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:38:20,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963221990] [2023-08-27 06:38:20,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:20,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:20,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:20,359 INFO L124 PetriNetUnfolderBase]: 411/621 cut-off events. [2023-08-27 06:38:20,359 INFO L125 PetriNetUnfolderBase]: For 689/739 co-relation queries the response was YES. [2023-08-27 06:38:20,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 621 events. 411/621 cut-off events. For 689/739 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2355 event pairs, 165 based on Foata normal form. 50/511 useless extension candidates. Maximal degree in co-relation 1794. Up to 433 conditions per place. [2023-08-27 06:38:20,363 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 44 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-27 06:38:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 282 flow [2023-08-27 06:38:20,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2023-08-27 06:38:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40955137481910275 [2023-08-27 06:38:20,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 849 transitions. [2023-08-27 06:38:20,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 849 transitions. [2023-08-27 06:38:20,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:20,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 849 transitions. [2023-08-27 06:38:20,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.0) internal successors, (849), 3 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,372 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 110 flow. Second operand 3 states and 849 transitions. [2023-08-27 06:38:20,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 282 flow [2023-08-27 06:38:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:20,375 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 130 flow [2023-08-27 06:38:20,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-08-27 06:38:20,377 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 130 flow [2023-08-27 06:38:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:20,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:38:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 06:38:20,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:20,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash 21657739, now seen corresponding path program 1 times [2023-08-27 06:38:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765329558] [2023-08-27 06:38:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:20,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,446 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 06:38:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765329558] [2023-08-27 06:38:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765329558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814487101] [2023-08-27 06:38:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:20,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:20,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:20,567 INFO L124 PetriNetUnfolderBase]: 318/483 cut-off events. [2023-08-27 06:38:20,567 INFO L125 PetriNetUnfolderBase]: For 431/478 co-relation queries the response was YES. [2023-08-27 06:38:20,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 483 events. 318/483 cut-off events. For 431/478 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1864 event pairs, 186 based on Foata normal form. 47/426 useless extension candidates. Maximal degree in co-relation 1520. Up to 479 conditions per place. [2023-08-27 06:38:20,570 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 27 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-27 06:38:20,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 184 flow [2023-08-27 06:38:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 835 transitions. [2023-08-27 06:38:20,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027978774722624 [2023-08-27 06:38:20,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 835 transitions. [2023-08-27 06:38:20,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 835 transitions. [2023-08-27 06:38:20,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:20,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 835 transitions. [2023-08-27 06:38:20,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.3333333333333) internal successors, (835), 3 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,591 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 130 flow. Second operand 3 states and 835 transitions. [2023-08-27 06:38:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 184 flow [2023-08-27 06:38:20,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:20,594 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 127 flow [2023-08-27 06:38:20,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 06:38:20,595 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:20,595 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 127 flow [2023-08-27 06:38:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:20,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:38:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 06:38:20,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:20,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash 21657649, now seen corresponding path program 1 times [2023-08-27 06:38:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:20,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684208774] [2023-08-27 06:38:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,642 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 06:38:20,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684208774] [2023-08-27 06:38:20,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684208774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915181978] [2023-08-27 06:38:20,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:20,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:20,742 INFO L124 PetriNetUnfolderBase]: 256/389 cut-off events. [2023-08-27 06:38:20,742 INFO L125 PetriNetUnfolderBase]: For 351/390 co-relation queries the response was YES. [2023-08-27 06:38:20,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 389 events. 256/389 cut-off events. For 351/390 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1398 event pairs, 144 based on Foata normal form. 39/356 useless extension candidates. Maximal degree in co-relation 1216. Up to 385 conditions per place. [2023-08-27 06:38:20,745 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 26 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-27 06:38:20,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 179 flow [2023-08-27 06:38:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 834 transitions. [2023-08-27 06:38:20,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.402315484804631 [2023-08-27 06:38:20,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:20,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 834 transitions. [2023-08-27 06:38:20,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.0) internal successors, (834), 3 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,753 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 127 flow. Second operand 3 states and 834 transitions. [2023-08-27 06:38:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 179 flow [2023-08-27 06:38:20,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:20,756 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 126 flow [2023-08-27 06:38:20,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-08-27 06:38:20,757 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:20,757 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 126 flow [2023-08-27 06:38:20,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.6666666666667) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:20,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 06:38:20,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 06:38:20,758 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:20,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 21657737, now seen corresponding path program 1 times [2023-08-27 06:38:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:20,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728945136] [2023-08-27 06:38:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728945136] [2023-08-27 06:38:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728945136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:38:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383047070] [2023-08-27 06:38:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 691 [2023-08-27 06:38:20,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 691 [2023-08-27 06:38:20,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:20,899 INFO L124 PetriNetUnfolderBase]: 194/295 cut-off events. [2023-08-27 06:38:20,900 INFO L125 PetriNetUnfolderBase]: For 274/305 co-relation queries the response was YES. [2023-08-27 06:38:20,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 295 events. 194/295 cut-off events. For 274/305 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 946 event pairs, 102 based on Foata normal form. 59/286 useless extension candidates. Maximal degree in co-relation 944. Up to 291 conditions per place. [2023-08-27 06:38:20,902 INFO L140 encePairwiseOnDemand]: 689/691 looper letters, 25 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-27 06:38:20,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 176 flow [2023-08-27 06:38:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 830 transitions. [2023-08-27 06:38:20,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003859141341052 [2023-08-27 06:38:20,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 830 transitions. [2023-08-27 06:38:20,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 830 transitions. [2023-08-27 06:38:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 830 transitions. [2023-08-27 06:38:20,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,911 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 126 flow. Second operand 3 states and 830 transitions. [2023-08-27 06:38:20,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 28 transitions, 176 flow [2023-08-27 06:38:20,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 173 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:20,913 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 123 flow [2023-08-27 06:38:20,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-27 06:38:20,914 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:20,914 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 123 flow [2023-08-27 06:38:20,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:20,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:20,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 06:38:20,915 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:20,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 671391651, now seen corresponding path program 1 times [2023-08-27 06:38:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:20,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136813581] [2023-08-27 06:38:20,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:20,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:20,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136813581] [2023-08-27 06:38:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136813581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:38:20,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323075950] [2023-08-27 06:38:20,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:20,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:38:20,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:20,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:20,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:20,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:20,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:21,066 INFO L124 PetriNetUnfolderBase]: 194/292 cut-off events. [2023-08-27 06:38:21,066 INFO L125 PetriNetUnfolderBase]: For 297/319 co-relation queries the response was YES. [2023-08-27 06:38:21,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 292 events. 194/292 cut-off events. For 297/319 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 854 event pairs, 39 based on Foata normal form. 22/282 useless extension candidates. Maximal degree in co-relation 922. Up to 157 conditions per place. [2023-08-27 06:38:21,068 INFO L140 encePairwiseOnDemand]: 688/691 looper letters, 37 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2023-08-27 06:38:21,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 267 flow [2023-08-27 06:38:21,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:21,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2023-08-27 06:38:21,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4047274481427882 [2023-08-27 06:38:21,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2023-08-27 06:38:21,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2023-08-27 06:38:21,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:21,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2023-08-27 06:38:21,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,078 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 123 flow. Second operand 3 states and 839 transitions. [2023-08-27 06:38:21,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 267 flow [2023-08-27 06:38:21,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:21,079 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 124 flow [2023-08-27 06:38:21,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-27 06:38:21,080 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2023-08-27 06:38:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 124 flow [2023-08-27 06:38:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:21,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 06:38:21,081 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:21,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash 671391656, now seen corresponding path program 1 times [2023-08-27 06:38:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:21,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780533411] [2023-08-27 06:38:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:21,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780533411] [2023-08-27 06:38:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780533411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503302215] [2023-08-27 06:38:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:21,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:21,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:21,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:21,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 06:38:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:21,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:21,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:21,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503302215] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:21,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 06:38:21,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358545026] [2023-08-27 06:38:21,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:21,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:38:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:21,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:38:21,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:38:21,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:21,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:21,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:21,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:21,470 INFO L124 PetriNetUnfolderBase]: 335/481 cut-off events. [2023-08-27 06:38:21,470 INFO L125 PetriNetUnfolderBase]: For 535/569 co-relation queries the response was YES. [2023-08-27 06:38:21,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 481 events. 335/481 cut-off events. For 535/569 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1424 event pairs, 81 based on Foata normal form. 34/499 useless extension candidates. Maximal degree in co-relation 1618. Up to 293 conditions per place. [2023-08-27 06:38:21,474 INFO L140 encePairwiseOnDemand]: 687/691 looper letters, 79 selfloop transitions, 9 changer transitions 0/89 dead transitions. [2023-08-27 06:38:21,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 89 transitions, 602 flow [2023-08-27 06:38:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:38:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:38:21,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2023-08-27 06:38:21,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40593342981186686 [2023-08-27 06:38:21,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2023-08-27 06:38:21,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2023-08-27 06:38:21,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:21,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2023-08-27 06:38:21,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,492 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 124 flow. Second operand 6 states and 1683 transitions. [2023-08-27 06:38:21,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 89 transitions, 602 flow [2023-08-27 06:38:21,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 89 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:21,496 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 179 flow [2023-08-27 06:38:21,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2023-08-27 06:38:21,496 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-08-27 06:38:21,497 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 179 flow [2023-08-27 06:38:21,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:21,497 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 06:38:21,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:21,703 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:21,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash -937706004, now seen corresponding path program 2 times [2023-08-27 06:38:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619794913] [2023-08-27 06:38:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:21,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619794913] [2023-08-27 06:38:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619794913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:21,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466455508] [2023-08-27 06:38:21,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:21,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:21,813 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:21,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 06:38:21,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:38:21,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:21,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:21,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:38:21,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:38:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466455508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:38:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 06:38:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596838998] [2023-08-27 06:38:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:38:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:38:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:38:21,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 691 [2023-08-27 06:38:21,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:21,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:21,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 691 [2023-08-27 06:38:21,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:22,036 INFO L124 PetriNetUnfolderBase]: 245/348 cut-off events. [2023-08-27 06:38:22,036 INFO L125 PetriNetUnfolderBase]: For 577/623 co-relation queries the response was YES. [2023-08-27 06:38:22,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 348 events. 245/348 cut-off events. For 577/623 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 980 event pairs, 105 based on Foata normal form. 74/392 useless extension candidates. Maximal degree in co-relation 1292. Up to 344 conditions per place. [2023-08-27 06:38:22,039 INFO L140 encePairwiseOnDemand]: 688/691 looper letters, 28 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-27 06:38:22,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 31 transitions, 217 flow [2023-08-27 06:38:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:38:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:38:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-08-27 06:38:22,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40086830680173663 [2023-08-27 06:38:22,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-08-27 06:38:22,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-08-27 06:38:22,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:22,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-08-27 06:38:22,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 691.0) internal successors, (2764), 4 states have internal predecessors, (2764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,047 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 179 flow. Second operand 3 states and 831 transitions. [2023-08-27 06:38:22,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 31 transitions, 217 flow [2023-08-27 06:38:22,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 164 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-27 06:38:22,049 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 108 flow [2023-08-27 06:38:22,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-27 06:38:22,050 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -11 predicate places. [2023-08-27 06:38:22,050 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 108 flow [2023-08-27 06:38:22,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:22,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:22,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 06:38:22,260 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:22,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:22,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1910747004, now seen corresponding path program 1 times [2023-08-27 06:38:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476371685] [2023-08-27 06:38:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:22,470 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 06:38:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:22,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476371685] [2023-08-27 06:38:22,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476371685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:22,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:22,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:38:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338435635] [2023-08-27 06:38:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:22,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:22,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 691 [2023-08-27 06:38:22,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 262.2) internal successors, (1311), 5 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:22,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 691 [2023-08-27 06:38:22,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:22,607 INFO L124 PetriNetUnfolderBase]: 253/373 cut-off events. [2023-08-27 06:38:22,607 INFO L125 PetriNetUnfolderBase]: For 129/160 co-relation queries the response was YES. [2023-08-27 06:38:22,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 373 events. 253/373 cut-off events. For 129/160 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1128 event pairs, 25 based on Foata normal form. 32/389 useless extension candidates. Maximal degree in co-relation 940. Up to 340 conditions per place. [2023-08-27 06:38:22,610 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 39 selfloop transitions, 5 changer transitions 5/51 dead transitions. [2023-08-27 06:38:22,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 258 flow [2023-08-27 06:38:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1334 transitions. [2023-08-27 06:38:22,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861070911722142 [2023-08-27 06:38:22,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1334 transitions. [2023-08-27 06:38:22,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1334 transitions. [2023-08-27 06:38:22,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:22,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1334 transitions. [2023-08-27 06:38:22,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,622 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 108 flow. Second operand 5 states and 1334 transitions. [2023-08-27 06:38:22,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 258 flow [2023-08-27 06:38:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:22,625 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 143 flow [2023-08-27 06:38:22,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-27 06:38:22,625 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-27 06:38:22,625 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 143 flow [2023-08-27 06:38:22,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 262.2) internal successors, (1311), 5 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:22,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 06:38:22,626 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:22,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 271331122, now seen corresponding path program 2 times [2023-08-27 06:38:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:22,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737279013] [2023-08-27 06:38:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:22,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:22,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:22,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737279013] [2023-08-27 06:38:22,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737279013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:22,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:22,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:38:22,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959527390] [2023-08-27 06:38:22,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:22,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:38:22,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:22,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:38:22,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 06:38:22,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 691 [2023-08-27 06:38:22,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:22,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:22,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 691 [2023-08-27 06:38:22,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:23,033 INFO L124 PetriNetUnfolderBase]: 250/365 cut-off events. [2023-08-27 06:38:23,033 INFO L125 PetriNetUnfolderBase]: For 229/259 co-relation queries the response was YES. [2023-08-27 06:38:23,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 365 events. 250/365 cut-off events. For 229/259 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1045 event pairs, 33 based on Foata normal form. 31/380 useless extension candidates. Maximal degree in co-relation 1012. Up to 340 conditions per place. [2023-08-27 06:38:23,036 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 35 selfloop transitions, 6 changer transitions 5/48 dead transitions. [2023-08-27 06:38:23,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 278 flow [2023-08-27 06:38:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1305 transitions. [2023-08-27 06:38:23,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37771345875542695 [2023-08-27 06:38:23,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1305 transitions. [2023-08-27 06:38:23,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1305 transitions. [2023-08-27 06:38:23,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:23,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1305 transitions. [2023-08-27 06:38:23,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,048 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 143 flow. Second operand 5 states and 1305 transitions. [2023-08-27 06:38:23,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 278 flow [2023-08-27 06:38:23,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 276 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 06:38:23,050 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 177 flow [2023-08-27 06:38:23,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-08-27 06:38:23,051 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2023-08-27 06:38:23,051 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 177 flow [2023-08-27 06:38:23,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:23,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 06:38:23,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:23,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1322804287, now seen corresponding path program 1 times [2023-08-27 06:38:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:23,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234313291] [2023-08-27 06:38:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:23,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:23,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234313291] [2023-08-27 06:38:23,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234313291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:23,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58269172] [2023-08-27 06:38:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:23,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:23,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:23,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:23,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:23,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:23,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:23,257 INFO L124 PetriNetUnfolderBase]: 338/507 cut-off events. [2023-08-27 06:38:23,257 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2023-08-27 06:38:23,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 507 events. 338/507 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1591 event pairs, 124 based on Foata normal form. 4/491 useless extension candidates. Maximal degree in co-relation 1446. Up to 374 conditions per place. [2023-08-27 06:38:23,260 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 58 selfloop transitions, 6 changer transitions 6/70 dead transitions. [2023-08-27 06:38:23,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 428 flow [2023-08-27 06:38:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:23,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1357 transitions. [2023-08-27 06:38:23,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39276410998552824 [2023-08-27 06:38:23,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1357 transitions. [2023-08-27 06:38:23,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1357 transitions. [2023-08-27 06:38:23,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:23,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1357 transitions. [2023-08-27 06:38:23,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 271.4) internal successors, (1357), 5 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,273 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 177 flow. Second operand 5 states and 1357 transitions. [2023-08-27 06:38:23,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 428 flow [2023-08-27 06:38:23,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:23,279 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 186 flow [2023-08-27 06:38:23,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-27 06:38:23,279 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-27 06:38:23,280 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 186 flow [2023-08-27 06:38:23,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:23,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:23,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 06:38:23,280 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:23,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash 481847053, now seen corresponding path program 2 times [2023-08-27 06:38:23,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:23,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855564571] [2023-08-27 06:38:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:23,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:23,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:23,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855564571] [2023-08-27 06:38:23,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855564571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:23,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:23,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:23,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076125141] [2023-08-27 06:38:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:23,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:23,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:23,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:23,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:23,491 INFO L124 PetriNetUnfolderBase]: 341/512 cut-off events. [2023-08-27 06:38:23,491 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2023-08-27 06:38:23,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1544 conditions, 512 events. 341/512 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1642 event pairs, 141 based on Foata normal form. 4/496 useless extension candidates. Maximal degree in co-relation 1519. Up to 455 conditions per place. [2023-08-27 06:38:23,495 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 44 selfloop transitions, 10 changer transitions 5/59 dead transitions. [2023-08-27 06:38:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 417 flow [2023-08-27 06:38:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1352 transitions. [2023-08-27 06:38:23,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39131693198263384 [2023-08-27 06:38:23,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1352 transitions. [2023-08-27 06:38:23,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1352 transitions. [2023-08-27 06:38:23,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:23,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1352 transitions. [2023-08-27 06:38:23,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.4) internal successors, (1352), 5 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,507 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 186 flow. Second operand 5 states and 1352 transitions. [2023-08-27 06:38:23,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 417 flow [2023-08-27 06:38:23,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 397 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:23,511 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 240 flow [2023-08-27 06:38:23,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-27 06:38:23,511 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 5 predicate places. [2023-08-27 06:38:23,511 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 240 flow [2023-08-27 06:38:23,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:23,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:23,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 06:38:23,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:23,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1874756548, now seen corresponding path program 1 times [2023-08-27 06:38:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362214455] [2023-08-27 06:38:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362214455] [2023-08-27 06:38:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362214455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889076448] [2023-08-27 06:38:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:23,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:23,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:23,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:23,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:23,724 INFO L124 PetriNetUnfolderBase]: 363/542 cut-off events. [2023-08-27 06:38:23,724 INFO L125 PetriNetUnfolderBase]: For 650/650 co-relation queries the response was YES. [2023-08-27 06:38:23,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 542 events. 363/542 cut-off events. For 650/650 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1739 event pairs, 76 based on Foata normal form. 12/534 useless extension candidates. Maximal degree in co-relation 1707. Up to 341 conditions per place. [2023-08-27 06:38:23,729 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 73 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2023-08-27 06:38:23,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 567 flow [2023-08-27 06:38:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1360 transitions. [2023-08-27 06:38:23,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39363241678726485 [2023-08-27 06:38:23,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1360 transitions. [2023-08-27 06:38:23,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1360 transitions. [2023-08-27 06:38:23,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:23,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1360 transitions. [2023-08-27 06:38:23,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 272.0) internal successors, (1360), 5 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,740 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 240 flow. Second operand 5 states and 1360 transitions. [2023-08-27 06:38:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 567 flow [2023-08-27 06:38:23,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 539 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:23,744 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 268 flow [2023-08-27 06:38:23,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2023-08-27 06:38:23,744 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2023-08-27 06:38:23,744 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 268 flow [2023-08-27 06:38:23,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:23,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:23,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:23,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 06:38:23,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:23,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:23,746 INFO L85 PathProgramCache]: Analyzing trace with hash 241028794, now seen corresponding path program 2 times [2023-08-27 06:38:23,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178244264] [2023-08-27 06:38:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:23,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178244264] [2023-08-27 06:38:23,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178244264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:23,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537794797] [2023-08-27 06:38:23,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:23,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:23,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:23,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:23,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 06:38:23,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:23,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:23,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:23,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:24,270 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537794797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:24,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 06:38:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638863338] [2023-08-27 06:38:24,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:24,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:38:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:38:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 06:38:24,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:24,611 INFO L124 PetriNetUnfolderBase]: 404/605 cut-off events. [2023-08-27 06:38:24,611 INFO L125 PetriNetUnfolderBase]: For 900/900 co-relation queries the response was YES. [2023-08-27 06:38:24,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 605 events. 404/605 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2031 event pairs, 74 based on Foata normal form. 12/597 useless extension candidates. Maximal degree in co-relation 1989. Up to 268 conditions per place. [2023-08-27 06:38:24,615 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 72 selfloop transitions, 37 changer transitions 1/110 dead transitions. [2023-08-27 06:38:24,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 110 transitions, 783 flow [2023-08-27 06:38:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:38:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:38:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2696 transitions. [2023-08-27 06:38:24,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015918958031837 [2023-08-27 06:38:24,623 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2696 transitions. [2023-08-27 06:38:24,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2696 transitions. [2023-08-27 06:38:24,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:24,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2696 transitions. [2023-08-27 06:38:24,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 269.6) internal successors, (2696), 10 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,634 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 268 flow. Second operand 10 states and 2696 transitions. [2023-08-27 06:38:24,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 110 transitions, 783 flow [2023-08-27 06:38:24,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 756 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:24,639 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 547 flow [2023-08-27 06:38:24,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=547, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2023-08-27 06:38:24,640 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2023-08-27 06:38:24,640 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 547 flow [2023-08-27 06:38:24,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:24,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:24,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:24,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:24,847 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:24,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1995976596, now seen corresponding path program 3 times [2023-08-27 06:38:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:24,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631037565] [2023-08-27 06:38:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:24,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:24,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631037565] [2023-08-27 06:38:24,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631037565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:24,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:24,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:24,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067239408] [2023-08-27 06:38:24,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:24,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:24,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:24,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:24,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:24,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:24,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:24,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:25,072 INFO L124 PetriNetUnfolderBase]: 411/622 cut-off events. [2023-08-27 06:38:25,073 INFO L125 PetriNetUnfolderBase]: For 1511/1511 co-relation queries the response was YES. [2023-08-27 06:38:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 622 events. 411/622 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2106 event pairs, 128 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 2448. Up to 456 conditions per place. [2023-08-27 06:38:25,078 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 73 selfloop transitions, 18 changer transitions 3/94 dead transitions. [2023-08-27 06:38:25,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 865 flow [2023-08-27 06:38:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1353 transitions. [2023-08-27 06:38:25,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916063675832127 [2023-08-27 06:38:25,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1353 transitions. [2023-08-27 06:38:25,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1353 transitions. [2023-08-27 06:38:25,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:25,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1353 transitions. [2023-08-27 06:38:25,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.6) internal successors, (1353), 5 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,087 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 547 flow. Second operand 5 states and 1353 transitions. [2023-08-27 06:38:25,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 865 flow [2023-08-27 06:38:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 829 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:25,094 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 542 flow [2023-08-27 06:38:25,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=542, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-27 06:38:25,094 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2023-08-27 06:38:25,094 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 542 flow [2023-08-27 06:38:25,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:25,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:25,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 06:38:25,095 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:25,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1604013457, now seen corresponding path program 3 times [2023-08-27 06:38:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107767411] [2023-08-27 06:38:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107767411] [2023-08-27 06:38:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107767411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798137347] [2023-08-27 06:38:25,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:38:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:25,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:25,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 06:38:25,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:38:25,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:25,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:25,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:25,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:25,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:25,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798137347] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:25,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:25,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-27 06:38:25,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66960228] [2023-08-27 06:38:25,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:25,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:38:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:25,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:38:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:38:25,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:25,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 542 flow. Second operand has 8 states, 8 states have (on average 266.75) internal successors, (2134), 8 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:25,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:25,683 INFO L124 PetriNetUnfolderBase]: 430/647 cut-off events. [2023-08-27 06:38:25,683 INFO L125 PetriNetUnfolderBase]: For 1749/1749 co-relation queries the response was YES. [2023-08-27 06:38:25,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 647 events. 430/647 cut-off events. For 1749/1749 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2221 event pairs, 36 based on Foata normal form. 10/635 useless extension candidates. Maximal degree in co-relation 2578. Up to 272 conditions per place. [2023-08-27 06:38:25,693 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 88 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2023-08-27 06:38:25,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 1040 flow [2023-08-27 06:38:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1893 transitions. [2023-08-27 06:38:25,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3913582799255737 [2023-08-27 06:38:25,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1893 transitions. [2023-08-27 06:38:25,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1893 transitions. [2023-08-27 06:38:25,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:25,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1893 transitions. [2023-08-27 06:38:25,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.42857142857144) internal successors, (1893), 7 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,707 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 542 flow. Second operand 7 states and 1893 transitions. [2023-08-27 06:38:25,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 1040 flow [2023-08-27 06:38:25,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 118 transitions, 991 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 06:38:25,715 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 629 flow [2023-08-27 06:38:25,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-08-27 06:38:25,715 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2023-08-27 06:38:25,715 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 629 flow [2023-08-27 06:38:25,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 266.75) internal successors, (2134), 8 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:25,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:25,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:25,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:25,922 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:25,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash -898508176, now seen corresponding path program 4 times [2023-08-27 06:38:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:25,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104027433] [2023-08-27 06:38:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:25,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104027433] [2023-08-27 06:38:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104027433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:25,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:25,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165348609] [2023-08-27 06:38:25,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:25,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:25,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:25,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 629 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:25,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:25,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:25,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:26,153 INFO L124 PetriNetUnfolderBase]: 429/648 cut-off events. [2023-08-27 06:38:26,154 INFO L125 PetriNetUnfolderBase]: For 1997/1997 co-relation queries the response was YES. [2023-08-27 06:38:26,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 648 events. 429/648 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2266 event pairs, 132 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 2744. Up to 574 conditions per place. [2023-08-27 06:38:26,164 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 71 selfloop transitions, 15 changer transitions 2/88 dead transitions. [2023-08-27 06:38:26,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 850 flow [2023-08-27 06:38:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1350 transitions. [2023-08-27 06:38:26,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907380607814761 [2023-08-27 06:38:26,166 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1350 transitions. [2023-08-27 06:38:26,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1350 transitions. [2023-08-27 06:38:26,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:26,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1350 transitions. [2023-08-27 06:38:26,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,171 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 629 flow. Second operand 5 states and 1350 transitions. [2023-08-27 06:38:26,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 850 flow [2023-08-27 06:38:26,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 804 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:26,178 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 600 flow [2023-08-27 06:38:26,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-27 06:38:26,179 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2023-08-27 06:38:26,180 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 600 flow [2023-08-27 06:38:26,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:26,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:26,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 06:38:26,180 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:26,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1201497663, now seen corresponding path program 4 times [2023-08-27 06:38:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:26,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171267374] [2023-08-27 06:38:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:26,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171267374] [2023-08-27 06:38:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171267374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:26,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034148868] [2023-08-27 06:38:26,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:26,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:26,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:26,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 600 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:26,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:26,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:26,456 INFO L124 PetriNetUnfolderBase]: 449/676 cut-off events. [2023-08-27 06:38:26,457 INFO L125 PetriNetUnfolderBase]: For 2134/2134 co-relation queries the response was YES. [2023-08-27 06:38:26,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 676 events. 449/676 cut-off events. For 2134/2134 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2348 event pairs, 144 based on Foata normal form. 10/686 useless extension candidates. Maximal degree in co-relation 2826. Up to 584 conditions per place. [2023-08-27 06:38:26,461 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 80 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2023-08-27 06:38:26,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 96 transitions, 886 flow [2023-08-27 06:38:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1352 transitions. [2023-08-27 06:38:26,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39131693198263384 [2023-08-27 06:38:26,463 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1352 transitions. [2023-08-27 06:38:26,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1352 transitions. [2023-08-27 06:38:26,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:26,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1352 transitions. [2023-08-27 06:38:26,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.4) internal successors, (1352), 5 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,468 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 600 flow. Second operand 5 states and 1352 transitions. [2023-08-27 06:38:26,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 96 transitions, 886 flow [2023-08-27 06:38:26,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 854 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:26,474 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 615 flow [2023-08-27 06:38:26,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-08-27 06:38:26,475 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2023-08-27 06:38:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 615 flow [2023-08-27 06:38:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:26,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 06:38:26,476 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:26,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash -813780103, now seen corresponding path program 5 times [2023-08-27 06:38:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:26,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905060963] [2023-08-27 06:38:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905060963] [2023-08-27 06:38:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905060963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:26,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158915001] [2023-08-27 06:38:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:26,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:26,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 615 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:26,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:26,701 INFO L124 PetriNetUnfolderBase]: 445/672 cut-off events. [2023-08-27 06:38:26,701 INFO L125 PetriNetUnfolderBase]: For 2001/2001 co-relation queries the response was YES. [2023-08-27 06:38:26,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 672 events. 445/672 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2344 event pairs, 141 based on Foata normal form. 4/676 useless extension candidates. Maximal degree in co-relation 2806. Up to 575 conditions per place. [2023-08-27 06:38:26,706 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 70 selfloop transitions, 15 changer transitions 4/89 dead transitions. [2023-08-27 06:38:26,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 836 flow [2023-08-27 06:38:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1351 transitions. [2023-08-27 06:38:26,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391027496382055 [2023-08-27 06:38:26,708 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1351 transitions. [2023-08-27 06:38:26,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1351 transitions. [2023-08-27 06:38:26,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:26,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1351 transitions. [2023-08-27 06:38:26,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.2) internal successors, (1351), 5 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,713 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 615 flow. Second operand 5 states and 1351 transitions. [2023-08-27 06:38:26,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 836 flow [2023-08-27 06:38:26,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 89 transitions, 798 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:26,719 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 590 flow [2023-08-27 06:38:26,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2023-08-27 06:38:26,720 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2023-08-27 06:38:26,720 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 590 flow [2023-08-27 06:38:26,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:26,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:26,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:26,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 06:38:26,721 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:26,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:26,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1684991808, now seen corresponding path program 5 times [2023-08-27 06:38:26,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:26,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737346024] [2023-08-27 06:38:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:26,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737346024] [2023-08-27 06:38:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737346024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436907949] [2023-08-27 06:38:26,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:38:26,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:26,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:26,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:26,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 06:38:26,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:26,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:26,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:26,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:27,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:27,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436907949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:27,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:27,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 06:38:27,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687553920] [2023-08-27 06:38:27,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:27,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:38:27,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:38:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 06:38:27,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:27,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 590 flow. Second operand has 10 states, 10 states have (on average 266.4) internal successors, (2664), 10 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:27,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:27,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:27,439 INFO L124 PetriNetUnfolderBase]: 432/655 cut-off events. [2023-08-27 06:38:27,439 INFO L125 PetriNetUnfolderBase]: For 1882/1882 co-relation queries the response was YES. [2023-08-27 06:38:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 655 events. 432/655 cut-off events. For 1882/1882 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2267 event pairs, 142 based on Foata normal form. 12/667 useless extension candidates. Maximal degree in co-relation 2644. Up to 544 conditions per place. [2023-08-27 06:38:27,444 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 71 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2023-08-27 06:38:27,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 860 flow [2023-08-27 06:38:27,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:38:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:38:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1620 transitions. [2023-08-27 06:38:27,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907380607814761 [2023-08-27 06:38:27,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1620 transitions. [2023-08-27 06:38:27,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1620 transitions. [2023-08-27 06:38:27,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:27,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1620 transitions. [2023-08-27 06:38:27,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.0) internal successors, (1620), 6 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 691.0) internal successors, (4837), 7 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,453 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 590 flow. Second operand 6 states and 1620 transitions. [2023-08-27 06:38:27,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 860 flow [2023-08-27 06:38:27,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 814 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 06:38:27,460 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 630 flow [2023-08-27 06:38:27,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=630, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-27 06:38:27,460 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2023-08-27 06:38:27,461 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 630 flow [2023-08-27 06:38:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 266.4) internal successors, (2664), 10 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:27,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:27,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:27,667 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:27,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash -505553404, now seen corresponding path program 6 times [2023-08-27 06:38:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813386952] [2023-08-27 06:38:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:27,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813386952] [2023-08-27 06:38:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813386952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:38:27,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:38:27,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 06:38:27,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953347625] [2023-08-27 06:38:27,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:38:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:38:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:38:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:38:27,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:27,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 630 flow. Second operand has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:27,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:27,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:27,911 INFO L124 PetriNetUnfolderBase]: 419/628 cut-off events. [2023-08-27 06:38:27,911 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2023-08-27 06:38:27,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 628 events. 419/628 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2083 event pairs, 136 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 2612. Up to 514 conditions per place. [2023-08-27 06:38:27,915 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 66 selfloop transitions, 17 changer transitions 2/85 dead transitions. [2023-08-27 06:38:27,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 820 flow [2023-08-27 06:38:27,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:38:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:38:27,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-08-27 06:38:27,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015918958031837 [2023-08-27 06:38:27,918 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-08-27 06:38:27,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-08-27 06:38:27,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:27,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-08-27 06:38:27,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 691.0) internal successors, (4146), 6 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,923 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 630 flow. Second operand 5 states and 1348 transitions. [2023-08-27 06:38:27,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 820 flow [2023-08-27 06:38:27,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 744 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-27 06:38:27,929 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 569 flow [2023-08-27 06:38:27,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=569, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2023-08-27 06:38:27,930 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 25 predicate places. [2023-08-27 06:38:27,930 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 569 flow [2023-08-27 06:38:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 266.8) internal successors, (1334), 5 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:27,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:27,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 06:38:27,931 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:27,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash -478870719, now seen corresponding path program 6 times [2023-08-27 06:38:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243974583] [2023-08-27 06:38:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:27,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243974583] [2023-08-27 06:38:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243974583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855593725] [2023-08-27 06:38:27,994 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:38:27,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:27,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:27,995 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:28,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 06:38:28,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:38:28,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:28,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:38:28,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:28,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855593725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:28,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 06:38:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878257443] [2023-08-27 06:38:28,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:28,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 06:38:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:28,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 06:38:28,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 06:38:28,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:28,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 569 flow. Second operand has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:28,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:28,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:28,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:28,486 INFO L124 PetriNetUnfolderBase]: 397/590 cut-off events. [2023-08-27 06:38:28,486 INFO L125 PetriNetUnfolderBase]: For 1514/1514 co-relation queries the response was YES. [2023-08-27 06:38:28,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 590 events. 397/590 cut-off events. For 1514/1514 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1907 event pairs, 32 based on Foata normal form. 10/600 useless extension candidates. Maximal degree in co-relation 2374. Up to 244 conditions per place. [2023-08-27 06:38:28,490 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 78 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2023-08-27 06:38:28,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 1015 flow [2023-08-27 06:38:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:38:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:38:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2689 transitions. [2023-08-27 06:38:28,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38914616497829235 [2023-08-27 06:38:28,494 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2689 transitions. [2023-08-27 06:38:28,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2689 transitions. [2023-08-27 06:38:28,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:28,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2689 transitions. [2023-08-27 06:38:28,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.9) internal successors, (2689), 10 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:28,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:28,506 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:28,506 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 569 flow. Second operand 10 states and 2689 transitions. [2023-08-27 06:38:28,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 1015 flow [2023-08-27 06:38:28,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 981 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:28,517 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 721 flow [2023-08-27 06:38:28,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=721, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2023-08-27 06:38:28,519 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2023-08-27 06:38:28,519 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 721 flow [2023-08-27 06:38:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 266.3) internal successors, (2663), 10 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:28,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:28,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:28,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:28,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-27 06:38:28,726 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:28,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 921597143, now seen corresponding path program 1 times [2023-08-27 06:38:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052054302] [2023-08-27 06:38:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052054302] [2023-08-27 06:38:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052054302] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260461150] [2023-08-27 06:38:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:29,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:29,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:29,193 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:29,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 06:38:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:29,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:29,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:29,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260461150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:30,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:30,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:38:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66697968] [2023-08-27 06:38:30,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:38:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:38:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:38:30,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:38:30,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 721 flow. Second operand has 14 states, 14 states have (on average 256.14285714285717) internal successors, (3586), 14 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:30,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:30,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:38:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:30,840 INFO L124 PetriNetUnfolderBase]: 403/623 cut-off events. [2023-08-27 06:38:30,840 INFO L125 PetriNetUnfolderBase]: For 1767/1775 co-relation queries the response was YES. [2023-08-27 06:38:30,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 623 events. 403/623 cut-off events. For 1767/1775 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2258 event pairs, 26 based on Foata normal form. 7/624 useless extension candidates. Maximal degree in co-relation 2715. Up to 517 conditions per place. [2023-08-27 06:38:30,845 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 90 selfloop transitions, 19 changer transitions 5/122 dead transitions. [2023-08-27 06:38:30,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 122 transitions, 1099 flow [2023-08-27 06:38:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1823 transitions. [2023-08-27 06:38:30,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37688649989663014 [2023-08-27 06:38:30,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1823 transitions. [2023-08-27 06:38:30,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1823 transitions. [2023-08-27 06:38:30,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1823 transitions. [2023-08-27 06:38:30,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:30,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:30,853 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 721 flow. Second operand 7 states and 1823 transitions. [2023-08-27 06:38:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 122 transitions, 1099 flow [2023-08-27 06:38:30,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 122 transitions, 979 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-27 06:38:30,862 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 758 flow [2023-08-27 06:38:30,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2023-08-27 06:38:30,862 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 31 predicate places. [2023-08-27 06:38:30,862 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 758 flow [2023-08-27 06:38:30,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.14285714285717) internal successors, (3586), 14 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:30,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:30,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:30,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:31,069 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:31,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash 906256763, now seen corresponding path program 2 times [2023-08-27 06:38:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:31,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036086039] [2023-08-27 06:38:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:31,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036086039] [2023-08-27 06:38:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036086039] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547720942] [2023-08-27 06:38:31,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:31,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:31,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:31,583 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:31,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 06:38:31,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:31,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:31,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:31,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:32,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:32,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547720942] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:32,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:32,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-27 06:38:32,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686181115] [2023-08-27 06:38:32,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:32,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:38:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:32,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:38:32,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:38:32,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:38:32,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 758 flow. Second operand has 15 states, 15 states have (on average 251.2) internal successors, (3768), 15 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:32,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:32,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:38:32,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:33,129 INFO L124 PetriNetUnfolderBase]: 408/632 cut-off events. [2023-08-27 06:38:33,129 INFO L125 PetriNetUnfolderBase]: For 1543/1553 co-relation queries the response was YES. [2023-08-27 06:38:33,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 632 events. 408/632 cut-off events. For 1543/1553 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2305 event pairs, 28 based on Foata normal form. 8/635 useless extension candidates. Maximal degree in co-relation 2691. Up to 545 conditions per place. [2023-08-27 06:38:33,134 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 87 selfloop transitions, 20 changer transitions 5/120 dead transitions. [2023-08-27 06:38:33,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 120 transitions, 1053 flow [2023-08-27 06:38:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1783 transitions. [2023-08-27 06:38:33,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686169113086624 [2023-08-27 06:38:33,136 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1783 transitions. [2023-08-27 06:38:33,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1783 transitions. [2023-08-27 06:38:33,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:33,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1783 transitions. [2023-08-27 06:38:33,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 254.71428571428572) internal successors, (1783), 7 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:33,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:33,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:33,143 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 758 flow. Second operand 7 states and 1783 transitions. [2023-08-27 06:38:33,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 120 transitions, 1053 flow [2023-08-27 06:38:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 120 transitions, 1036 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:33,151 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 823 flow [2023-08-27 06:38:33,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2023-08-27 06:38:33,152 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2023-08-27 06:38:33,152 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 823 flow [2023-08-27 06:38:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 251.2) internal successors, (3768), 15 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:33,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:33,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:33,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:33,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 06:38:33,359 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:33,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -126382021, now seen corresponding path program 3 times [2023-08-27 06:38:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395531814] [2023-08-27 06:38:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395531814] [2023-08-27 06:38:33,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395531814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:33,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501637851] [2023-08-27 06:38:33,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:38:33,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:33,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:33,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:33,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 06:38:33,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:38:33,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:33,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:33,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:34,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:34,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501637851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:34,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:34,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:38:34,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404502712] [2023-08-27 06:38:34,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:34,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:38:34,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:34,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:38:34,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:38:34,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:38:34,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 823 flow. Second operand has 14 states, 14 states have (on average 256.07142857142856) internal successors, (3585), 14 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:34,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:34,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:38:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:35,217 INFO L124 PetriNetUnfolderBase]: 405/623 cut-off events. [2023-08-27 06:38:35,217 INFO L125 PetriNetUnfolderBase]: For 1756/1766 co-relation queries the response was YES. [2023-08-27 06:38:35,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2781 conditions, 623 events. 405/623 cut-off events. For 1756/1766 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2243 event pairs, 26 based on Foata normal form. 8/626 useless extension candidates. Maximal degree in co-relation 2755. Up to 521 conditions per place. [2023-08-27 06:38:35,222 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 88 selfloop transitions, 21 changer transitions 5/122 dead transitions. [2023-08-27 06:38:35,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 122 transitions, 1126 flow [2023-08-27 06:38:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1821 transitions. [2023-08-27 06:38:35,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37647302046723174 [2023-08-27 06:38:35,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1821 transitions. [2023-08-27 06:38:35,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1821 transitions. [2023-08-27 06:38:35,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:35,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1821 transitions. [2023-08-27 06:38:35,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:35,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:35,231 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:35,231 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 823 flow. Second operand 7 states and 1821 transitions. [2023-08-27 06:38:35,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 122 transitions, 1126 flow [2023-08-27 06:38:35,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 122 transitions, 1094 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:35,241 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 872 flow [2023-08-27 06:38:35,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=872, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-08-27 06:38:35,242 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2023-08-27 06:38:35,242 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 872 flow [2023-08-27 06:38:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.07142857142856) internal successors, (3585), 14 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:35,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:35,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:35,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:35,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-27 06:38:35,449 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:35,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1808114819, now seen corresponding path program 4 times [2023-08-27 06:38:35,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24091141] [2023-08-27 06:38:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:35,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24091141] [2023-08-27 06:38:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24091141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093790563] [2023-08-27 06:38:35,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:38:35,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:35,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:35,861 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:35,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 06:38:36,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:38:36,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:36,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:36,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:36,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:37,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093790563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:37,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:38:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095505943] [2023-08-27 06:38:37,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:37,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:38:37,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:38:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:38:37,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:38:37,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 872 flow. Second operand has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:37,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:37,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:38:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:37,282 INFO L124 PetriNetUnfolderBase]: 408/636 cut-off events. [2023-08-27 06:38:37,282 INFO L125 PetriNetUnfolderBase]: For 1957/1967 co-relation queries the response was YES. [2023-08-27 06:38:37,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2881 conditions, 636 events. 408/636 cut-off events. For 1957/1967 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2380 event pairs, 32 based on Foata normal form. 8/639 useless extension candidates. Maximal degree in co-relation 2853. Up to 571 conditions per place. [2023-08-27 06:38:37,287 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 91 selfloop transitions, 19 changer transitions 5/123 dead transitions. [2023-08-27 06:38:37,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1213 flow [2023-08-27 06:38:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:37,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1810 transitions. [2023-08-27 06:38:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741988836055406 [2023-08-27 06:38:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1810 transitions. [2023-08-27 06:38:37,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1810 transitions. [2023-08-27 06:38:37,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:37,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1810 transitions. [2023-08-27 06:38:37,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 258.57142857142856) internal successors, (1810), 7 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:37,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:37,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:37,295 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 872 flow. Second operand 7 states and 1810 transitions. [2023-08-27 06:38:37,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1213 flow [2023-08-27 06:38:37,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 1172 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:37,305 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 985 flow [2023-08-27 06:38:37,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=985, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2023-08-27 06:38:37,306 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 46 predicate places. [2023-08-27 06:38:37,306 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 985 flow [2023-08-27 06:38:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.42857142857144) internal successors, (3590), 14 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:37,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:37,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:37,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-27 06:38:37,513 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:37,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -148191379, now seen corresponding path program 5 times [2023-08-27 06:38:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167093175] [2023-08-27 06:38:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167093175] [2023-08-27 06:38:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167093175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:37,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108002185] [2023-08-27 06:38:37,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:38:37,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:37,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:37,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:37,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 06:38:38,096 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:38,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:38,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:38,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:38,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:38,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108002185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:38,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:38,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-27 06:38:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514441192] [2023-08-27 06:38:38,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:38,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:38:38,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:38,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:38:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:38:38,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:38:38,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 985 flow. Second operand has 14 states, 14 states have (on average 256.35714285714283) internal successors, (3589), 14 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:38,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:38,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:38:38,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:39,269 INFO L124 PetriNetUnfolderBase]: 415/655 cut-off events. [2023-08-27 06:38:39,269 INFO L125 PetriNetUnfolderBase]: For 2195/2205 co-relation queries the response was YES. [2023-08-27 06:38:39,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 655 events. 415/655 cut-off events. For 2195/2205 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2504 event pairs, 32 based on Foata normal form. 8/658 useless extension candidates. Maximal degree in co-relation 3011. Up to 566 conditions per place. [2023-08-27 06:38:39,274 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 101 selfloop transitions, 20 changer transitions 5/134 dead transitions. [2023-08-27 06:38:39,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 134 transitions, 1343 flow [2023-08-27 06:38:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1819 transitions. [2023-08-27 06:38:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37605954103783334 [2023-08-27 06:38:39,277 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1819 transitions. [2023-08-27 06:38:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1819 transitions. [2023-08-27 06:38:39,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:39,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1819 transitions. [2023-08-27 06:38:39,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:39,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:39,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:39,282 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 985 flow. Second operand 7 states and 1819 transitions. [2023-08-27 06:38:39,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 134 transitions, 1343 flow [2023-08-27 06:38:39,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 134 transitions, 1322 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-27 06:38:39,294 INFO L231 Difference]: Finished difference. Result has 100 places, 116 transitions, 1064 flow [2023-08-27 06:38:39,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1064, PETRI_PLACES=100, PETRI_TRANSITIONS=116} [2023-08-27 06:38:39,295 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 52 predicate places. [2023-08-27 06:38:39,295 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 116 transitions, 1064 flow [2023-08-27 06:38:39,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 256.35714285714283) internal successors, (3589), 14 states have internal predecessors, (3589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:39,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:39,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:39,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:39,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-27 06:38:39,502 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:39,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:39,502 INFO L85 PathProgramCache]: Analyzing trace with hash -401491759, now seen corresponding path program 6 times [2023-08-27 06:38:39,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:39,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941453318] [2023-08-27 06:38:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:39,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:39,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:39,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941453318] [2023-08-27 06:38:39,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941453318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:39,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485889675] [2023-08-27 06:38:39,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:38:39,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:39,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:39,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:39,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 06:38:40,024 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:38:40,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:40,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 06:38:40,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:40,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485889675] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:40,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 06:38:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435898320] [2023-08-27 06:38:40,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:38:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:38:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:38:40,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:38:40,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 116 transitions, 1064 flow. Second operand has 13 states, 13 states have (on average 256.15384615384613) internal successors, (3330), 13 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:40,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:40,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:38:40,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:41,260 INFO L124 PetriNetUnfolderBase]: 414/648 cut-off events. [2023-08-27 06:38:41,260 INFO L125 PetriNetUnfolderBase]: For 2447/2457 co-relation queries the response was YES. [2023-08-27 06:38:41,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3111 conditions, 648 events. 414/648 cut-off events. For 2447/2457 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2456 event pairs, 32 based on Foata normal form. 8/651 useless extension candidates. Maximal degree in co-relation 3077. Up to 566 conditions per place. [2023-08-27 06:38:41,265 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 97 selfloop transitions, 21 changer transitions 5/131 dead transitions. [2023-08-27 06:38:41,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 1380 flow [2023-08-27 06:38:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1815 transitions. [2023-08-27 06:38:41,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752325821790366 [2023-08-27 06:38:41,275 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1815 transitions. [2023-08-27 06:38:41,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1815 transitions. [2023-08-27 06:38:41,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:41,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1815 transitions. [2023-08-27 06:38:41,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.2857142857143) internal successors, (1815), 7 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:41,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:41,281 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:41,281 INFO L175 Difference]: Start difference. First operand has 100 places, 116 transitions, 1064 flow. Second operand 7 states and 1815 transitions. [2023-08-27 06:38:41,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 1380 flow [2023-08-27 06:38:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 1330 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:41,294 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 1107 flow [2023-08-27 06:38:41,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1107, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2023-08-27 06:38:41,294 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 57 predicate places. [2023-08-27 06:38:41,295 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 1107 flow [2023-08-27 06:38:41,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 256.15384615384613) internal successors, (3330), 13 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:41,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:41,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:41,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:41,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:41,504 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:41,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:41,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1377857165, now seen corresponding path program 7 times [2023-08-27 06:38:41,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:41,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249700369] [2023-08-27 06:38:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:41,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:41,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249700369] [2023-08-27 06:38:41,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249700369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:41,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770159986] [2023-08-27 06:38:41,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:38:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:41,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:41,617 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:41,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 06:38:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:41,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:41,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:41,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:42,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770159986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:42,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 06:38:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646277601] [2023-08-27 06:38:42,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:42,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:38:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:38:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:38:42,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:42,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 1107 flow. Second operand has 11 states, 11 states have (on average 266.6363636363636) internal successors, (2933), 11 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:42,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:42,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:42,332 INFO L124 PetriNetUnfolderBase]: 483/758 cut-off events. [2023-08-27 06:38:42,332 INFO L125 PetriNetUnfolderBase]: For 2650/2650 co-relation queries the response was YES. [2023-08-27 06:38:42,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 758 events. 483/758 cut-off events. For 2650/2650 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2963 event pairs, 48 based on Foata normal form. 10/768 useless extension candidates. Maximal degree in co-relation 3514. Up to 193 conditions per place. [2023-08-27 06:38:42,339 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 123 selfloop transitions, 63 changer transitions 0/186 dead transitions. [2023-08-27 06:38:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 186 transitions, 1834 flow [2023-08-27 06:38:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:38:42,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:38:42,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2704 transitions. [2023-08-27 06:38:42,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39131693198263384 [2023-08-27 06:38:42,344 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2704 transitions. [2023-08-27 06:38:42,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2704 transitions. [2023-08-27 06:38:42,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:42,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2704 transitions. [2023-08-27 06:38:42,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 270.4) internal successors, (2704), 10 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,352 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,352 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 1107 flow. Second operand 10 states and 2704 transitions. [2023-08-27 06:38:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 186 transitions, 1834 flow [2023-08-27 06:38:42,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 186 transitions, 1791 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:42,396 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1377 flow [2023-08-27 06:38:42,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2023-08-27 06:38:42,396 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 67 predicate places. [2023-08-27 06:38:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1377 flow [2023-08-27 06:38:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.6363636363636) internal successors, (2933), 11 states have internal predecessors, (2933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:42,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:42,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:42,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:42,603 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:42,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 158787332, now seen corresponding path program 8 times [2023-08-27 06:38:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930411114] [2023-08-27 06:38:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:42,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930411114] [2023-08-27 06:38:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930411114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962032615] [2023-08-27 06:38:42,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:42,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:42,695 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:42,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 06:38:42,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:42,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:42,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:42,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:42,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:42,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962032615] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:42,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:42,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 06:38:42,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570626425] [2023-08-27 06:38:42,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:42,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:38:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:42,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:38:42,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:38:42,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:42,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 266.3636363636364) internal successors, (2930), 11 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:42,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:42,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:42,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:43,225 INFO L124 PetriNetUnfolderBase]: 485/768 cut-off events. [2023-08-27 06:38:43,225 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2023-08-27 06:38:43,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 768 events. 485/768 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3039 event pairs, 100 based on Foata normal form. 4/772 useless extension candidates. Maximal degree in co-relation 3909. Up to 442 conditions per place. [2023-08-27 06:38:43,232 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 124 selfloop transitions, 34 changer transitions 11/169 dead transitions. [2023-08-27 06:38:43,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 169 transitions, 1890 flow [2023-08-27 06:38:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:38:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:38:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1896 transitions. [2023-08-27 06:38:43,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3919784990696713 [2023-08-27 06:38:43,235 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1896 transitions. [2023-08-27 06:38:43,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1896 transitions. [2023-08-27 06:38:43,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:43,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1896 transitions. [2023-08-27 06:38:43,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 270.85714285714283) internal successors, (1896), 7 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:43,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:43,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:43,240 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1377 flow. Second operand 7 states and 1896 transitions. [2023-08-27 06:38:43,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 169 transitions, 1890 flow [2023-08-27 06:38:43,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 169 transitions, 1772 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:43,258 INFO L231 Difference]: Finished difference. Result has 119 places, 127 transitions, 1307 flow [2023-08-27 06:38:43,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1307, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2023-08-27 06:38:43,259 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 71 predicate places. [2023-08-27 06:38:43,259 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 1307 flow [2023-08-27 06:38:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.3636363636364) internal successors, (2930), 11 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:43,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:43,260 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:43,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:43,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 06:38:43,466 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:43,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1990707859, now seen corresponding path program 9 times [2023-08-27 06:38:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239522726] [2023-08-27 06:38:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239522726] [2023-08-27 06:38:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239522726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819537692] [2023-08-27 06:38:43,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:38:43,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:43,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:43,563 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:43,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 06:38:43,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:38:43,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:43,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:43,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:43,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819537692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:43,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:38:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062011108] [2023-08-27 06:38:43,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:38:44,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:44,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:38:44,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:38:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:44,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 1307 flow. Second operand has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:44,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:44,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:44,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:44,351 INFO L124 PetriNetUnfolderBase]: 610/931 cut-off events. [2023-08-27 06:38:44,352 INFO L125 PetriNetUnfolderBase]: For 4588/4588 co-relation queries the response was YES. [2023-08-27 06:38:44,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 931 events. 610/931 cut-off events. For 4588/4588 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3636 event pairs, 59 based on Foata normal form. 14/945 useless extension candidates. Maximal degree in co-relation 4716. Up to 357 conditions per place. [2023-08-27 06:38:44,358 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 113 selfloop transitions, 102 changer transitions 1/216 dead transitions. [2023-08-27 06:38:44,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 216 transitions, 2397 flow [2023-08-27 06:38:44,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:38:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:38:44,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3497 transitions. [2023-08-27 06:38:44,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38929088277858176 [2023-08-27 06:38:44,369 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3497 transitions. [2023-08-27 06:38:44,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3497 transitions. [2023-08-27 06:38:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3497 transitions. [2023-08-27 06:38:44,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.0) internal successors, (3497), 13 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:44,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:44,378 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:44,378 INFO L175 Difference]: Start difference. First operand has 119 places, 127 transitions, 1307 flow. Second operand 13 states and 3497 transitions. [2023-08-27 06:38:44,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 216 transitions, 2397 flow [2023-08-27 06:38:44,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 216 transitions, 2239 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 06:38:44,398 INFO L231 Difference]: Finished difference. Result has 128 places, 172 transitions, 1930 flow [2023-08-27 06:38:44,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1930, PETRI_PLACES=128, PETRI_TRANSITIONS=172} [2023-08-27 06:38:44,399 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 80 predicate places. [2023-08-27 06:38:44,399 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 172 transitions, 1930 flow [2023-08-27 06:38:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:44,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:44,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:44,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:44,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 06:38:44,606 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:44,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 740541414, now seen corresponding path program 10 times [2023-08-27 06:38:44,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885390098] [2023-08-27 06:38:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885390098] [2023-08-27 06:38:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885390098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226875720] [2023-08-27 06:38:44,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:38:44,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:44,702 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 06:38:44,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:38:44,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:44,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:44,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:44,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:45,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226875720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:45,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:38:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173523125] [2023-08-27 06:38:45,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:38:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:45,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:38:45,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:38:45,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:45,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 172 transitions, 1930 flow. Second operand has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:45,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:45,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:45,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:45,418 INFO L124 PetriNetUnfolderBase]: 781/1160 cut-off events. [2023-08-27 06:38:45,418 INFO L125 PetriNetUnfolderBase]: For 7070/7070 co-relation queries the response was YES. [2023-08-27 06:38:45,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7091 conditions, 1160 events. 781/1160 cut-off events. For 7070/7070 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4416 event pairs, 128 based on Foata normal form. 22/1182 useless extension candidates. Maximal degree in co-relation 7036. Up to 806 conditions per place. [2023-08-27 06:38:45,426 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 163 selfloop transitions, 115 changer transitions 0/278 dead transitions. [2023-08-27 06:38:45,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 278 transitions, 3462 flow [2023-08-27 06:38:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:38:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:38:45,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4568 transitions. [2023-08-27 06:38:45,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888652421894952 [2023-08-27 06:38:45,440 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4568 transitions. [2023-08-27 06:38:45,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4568 transitions. [2023-08-27 06:38:45,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:45,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4568 transitions. [2023-08-27 06:38:45,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 268.70588235294116) internal successors, (4568), 17 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:45,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:45,452 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:45,452 INFO L175 Difference]: Start difference. First operand has 128 places, 172 transitions, 1930 flow. Second operand 17 states and 4568 transitions. [2023-08-27 06:38:45,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 278 transitions, 3462 flow [2023-08-27 06:38:45,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 278 transitions, 3138 flow, removed 75 selfloop flow, removed 6 redundant places. [2023-08-27 06:38:45,481 INFO L231 Difference]: Finished difference. Result has 142 places, 244 transitions, 2811 flow [2023-08-27 06:38:45,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2811, PETRI_PLACES=142, PETRI_TRANSITIONS=244} [2023-08-27 06:38:45,482 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 94 predicate places. [2023-08-27 06:38:45,482 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 244 transitions, 2811 flow [2023-08-27 06:38:45,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:45,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:45,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:45,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:45,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-27 06:38:45,689 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:45,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1770374523, now seen corresponding path program 11 times [2023-08-27 06:38:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:45,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082163306] [2023-08-27 06:38:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082163306] [2023-08-27 06:38:45,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082163306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:45,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011852767] [2023-08-27 06:38:45,783 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:38:45,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:45,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:45,785 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:45,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 06:38:45,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:45,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:45,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:45,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:46,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011852767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:46,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 06:38:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442757640] [2023-08-27 06:38:46,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:38:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:38:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:38:46,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:46,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 244 transitions, 2811 flow. Second operand has 13 states, 13 states have (on average 266.2307692307692) internal successors, (3461), 13 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:46,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:46,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:46,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:46,699 INFO L124 PetriNetUnfolderBase]: 856/1279 cut-off events. [2023-08-27 06:38:46,700 INFO L125 PetriNetUnfolderBase]: For 7618/7618 co-relation queries the response was YES. [2023-08-27 06:38:46,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 1279 events. 856/1279 cut-off events. For 7618/7618 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5084 event pairs, 59 based on Foata normal form. 28/1307 useless extension candidates. Maximal degree in co-relation 8184. Up to 630 conditions per place. [2023-08-27 06:38:46,710 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 197 selfloop transitions, 119 changer transitions 0/316 dead transitions. [2023-08-27 06:38:46,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 316 transitions, 4056 flow [2023-08-27 06:38:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:38:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:38:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3771 transitions. [2023-08-27 06:38:46,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38980773206532976 [2023-08-27 06:38:46,714 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3771 transitions. [2023-08-27 06:38:46,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3771 transitions. [2023-08-27 06:38:46,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:46,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3771 transitions. [2023-08-27 06:38:46,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 269.35714285714283) internal successors, (3771), 14 states have internal predecessors, (3771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:46,725 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:46,725 INFO L175 Difference]: Start difference. First operand has 142 places, 244 transitions, 2811 flow. Second operand 14 states and 3771 transitions. [2023-08-27 06:38:46,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 316 transitions, 4056 flow [2023-08-27 06:38:46,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 316 transitions, 3682 flow, removed 117 selfloop flow, removed 6 redundant places. [2023-08-27 06:38:46,770 INFO L231 Difference]: Finished difference. Result has 156 places, 274 transitions, 3088 flow [2023-08-27 06:38:46,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3088, PETRI_PLACES=156, PETRI_TRANSITIONS=274} [2023-08-27 06:38:46,770 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 108 predicate places. [2023-08-27 06:38:46,771 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 274 transitions, 3088 flow [2023-08-27 06:38:46,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.2307692307692) internal successors, (3461), 13 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:46,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:46,771 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:46,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-27 06:38:46,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 06:38:46,977 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:46,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash 586005986, now seen corresponding path program 12 times [2023-08-27 06:38:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:46,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178737105] [2023-08-27 06:38:46,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:47,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178737105] [2023-08-27 06:38:47,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178737105] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:47,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166609373] [2023-08-27 06:38:47,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:38:47,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:47,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:47,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 06:38:47,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:38:47,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:47,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:47,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:47,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:47,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166609373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:47,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:38:47,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301859860] [2023-08-27 06:38:47,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:47,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:38:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:38:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:38:47,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:47,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 274 transitions, 3088 flow. Second operand has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:47,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:47,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:47,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:47,878 INFO L124 PetriNetUnfolderBase]: 863/1306 cut-off events. [2023-08-27 06:38:47,878 INFO L125 PetriNetUnfolderBase]: For 8614/8614 co-relation queries the response was YES. [2023-08-27 06:38:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8301 conditions, 1306 events. 863/1306 cut-off events. For 8614/8614 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5362 event pairs, 148 based on Foata normal form. 20/1326 useless extension candidates. Maximal degree in co-relation 8236. Up to 926 conditions per place. [2023-08-27 06:38:47,892 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 201 selfloop transitions, 104 changer transitions 5/310 dead transitions. [2023-08-27 06:38:47,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 310 transitions, 3981 flow [2023-08-27 06:38:47,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:38:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:38:47,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3233 transitions. [2023-08-27 06:38:47,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38989387361312106 [2023-08-27 06:38:47,896 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3233 transitions. [2023-08-27 06:38:47,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3233 transitions. [2023-08-27 06:38:47,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:47,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3233 transitions. [2023-08-27 06:38:47,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.4166666666667) internal successors, (3233), 12 states have internal predecessors, (3233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:47,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:47,906 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:47,906 INFO L175 Difference]: Start difference. First operand has 156 places, 274 transitions, 3088 flow. Second operand 12 states and 3233 transitions. [2023-08-27 06:38:47,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 310 transitions, 3981 flow [2023-08-27 06:38:47,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 310 transitions, 3852 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-08-27 06:38:47,958 INFO L231 Difference]: Finished difference. Result has 165 places, 275 transitions, 3199 flow [2023-08-27 06:38:47,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3199, PETRI_PLACES=165, PETRI_TRANSITIONS=275} [2023-08-27 06:38:47,959 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 117 predicate places. [2023-08-27 06:38:47,959 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 275 transitions, 3199 flow [2023-08-27 06:38:47,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:47,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:47,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:47,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-08-27 06:38:48,166 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:48,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1758062616, now seen corresponding path program 13 times [2023-08-27 06:38:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383547190] [2023-08-27 06:38:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:48,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:48,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:48,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383547190] [2023-08-27 06:38:48,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383547190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:48,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920576614] [2023-08-27 06:38:48,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:38:48,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:48,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:48,259 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:48,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 06:38:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:48,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:48,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:48,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:48,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920576614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:48,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:48,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 06:38:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909465512] [2023-08-27 06:38:48,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:48,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:38:48,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:48,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:38:48,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:38:48,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:48,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 275 transitions, 3199 flow. Second operand has 13 states, 13 states have (on average 266.15384615384613) internal successors, (3460), 13 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:48,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:48,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:48,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:48,958 INFO L124 PetriNetUnfolderBase]: 860/1299 cut-off events. [2023-08-27 06:38:48,959 INFO L125 PetriNetUnfolderBase]: For 8767/8767 co-relation queries the response was YES. [2023-08-27 06:38:48,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8566 conditions, 1299 events. 860/1299 cut-off events. For 8767/8767 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5279 event pairs, 173 based on Foata normal form. 4/1303 useless extension candidates. Maximal degree in co-relation 8498. Up to 1049 conditions per place. [2023-08-27 06:38:48,971 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 243 selfloop transitions, 51 changer transitions 10/304 dead transitions. [2023-08-27 06:38:48,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 304 transitions, 4036 flow [2023-08-27 06:38:48,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:38:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:38:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2693 transitions. [2023-08-27 06:38:48,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897250361794501 [2023-08-27 06:38:48,986 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2693 transitions. [2023-08-27 06:38:48,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2693 transitions. [2023-08-27 06:38:48,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:48,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2693 transitions. [2023-08-27 06:38:48,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 269.3) internal successors, (2693), 10 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:48,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:48,993 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:48,993 INFO L175 Difference]: Start difference. First operand has 165 places, 275 transitions, 3199 flow. Second operand 10 states and 2693 transitions. [2023-08-27 06:38:48,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 304 transitions, 4036 flow [2023-08-27 06:38:49,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 304 transitions, 3813 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-08-27 06:38:49,042 INFO L231 Difference]: Finished difference. Result has 164 places, 271 transitions, 3025 flow [2023-08-27 06:38:49,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3025, PETRI_PLACES=164, PETRI_TRANSITIONS=271} [2023-08-27 06:38:49,042 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 116 predicate places. [2023-08-27 06:38:49,043 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 271 transitions, 3025 flow [2023-08-27 06:38:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.15384615384613) internal successors, (3460), 13 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:49,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:49,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:49,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:49,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:49,244 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:49,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash 39436057, now seen corresponding path program 14 times [2023-08-27 06:38:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007792556] [2023-08-27 06:38:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:49,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007792556] [2023-08-27 06:38:49,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007792556] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:49,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509871197] [2023-08-27 06:38:49,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:49,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:49,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:49,333 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:49,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 06:38:49,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:49,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:49,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:49,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:49,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:49,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509871197] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:49,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:49,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:38:49,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335030552] [2023-08-27 06:38:49,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:49,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:38:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:38:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:38:49,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:49,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 271 transitions, 3025 flow. Second operand has 12 states, 12 states have (on average 266.0833333333333) internal successors, (3193), 12 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:49,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:49,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:49,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:50,206 INFO L124 PetriNetUnfolderBase]: 848/1301 cut-off events. [2023-08-27 06:38:50,206 INFO L125 PetriNetUnfolderBase]: For 9044/9044 co-relation queries the response was YES. [2023-08-27 06:38:50,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8260 conditions, 1301 events. 848/1301 cut-off events. For 9044/9044 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5386 event pairs, 64 based on Foata normal form. 40/1341 useless extension candidates. Maximal degree in co-relation 8192. Up to 468 conditions per place. [2023-08-27 06:38:50,215 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 159 selfloop transitions, 157 changer transitions 0/316 dead transitions. [2023-08-27 06:38:50,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 316 transitions, 4027 flow [2023-08-27 06:38:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:38:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:38:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4304 transitions. [2023-08-27 06:38:50,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38929088277858176 [2023-08-27 06:38:50,218 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4304 transitions. [2023-08-27 06:38:50,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4304 transitions. [2023-08-27 06:38:50,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:50,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4304 transitions. [2023-08-27 06:38:50,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 269.0) internal successors, (4304), 16 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:50,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:50,229 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:50,229 INFO L175 Difference]: Start difference. First operand has 164 places, 271 transitions, 3025 flow. Second operand 16 states and 4304 transitions. [2023-08-27 06:38:50,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 316 transitions, 4027 flow [2023-08-27 06:38:50,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 316 transitions, 3881 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-08-27 06:38:50,277 INFO L231 Difference]: Finished difference. Result has 167 places, 270 transitions, 3242 flow [2023-08-27 06:38:50,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3242, PETRI_PLACES=167, PETRI_TRANSITIONS=270} [2023-08-27 06:38:50,278 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 119 predicate places. [2023-08-27 06:38:50,278 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 270 transitions, 3242 flow [2023-08-27 06:38:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.0833333333333) internal successors, (3193), 12 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:50,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:50,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:50,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:50,485 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:50,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash 182202425, now seen corresponding path program 15 times [2023-08-27 06:38:50,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:50,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636850741] [2023-08-27 06:38:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:50,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:50,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636850741] [2023-08-27 06:38:50,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636850741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:50,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795953286] [2023-08-27 06:38:50,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:38:50,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:50,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:50,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:50,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 06:38:50,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:38:50,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:50,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:50,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:50,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:51,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795953286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:51,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:51,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:38:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327345136] [2023-08-27 06:38:51,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:51,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:38:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:38:51,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:38:51,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:51,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 270 transitions, 3242 flow. Second operand has 15 states, 15 states have (on average 265.73333333333335) internal successors, (3986), 15 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:51,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:51,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:51,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:51,482 INFO L124 PetriNetUnfolderBase]: 986/1499 cut-off events. [2023-08-27 06:38:51,482 INFO L125 PetriNetUnfolderBase]: For 12653/12653 co-relation queries the response was YES. [2023-08-27 06:38:51,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10189 conditions, 1499 events. 986/1499 cut-off events. For 12653/12653 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6362 event pairs, 89 based on Foata normal form. 16/1515 useless extension candidates. Maximal degree in co-relation 10122. Up to 555 conditions per place. [2023-08-27 06:38:51,493 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 162 selfloop transitions, 201 changer transitions 5/368 dead transitions. [2023-08-27 06:38:51,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 368 transitions, 5174 flow [2023-08-27 06:38:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:38:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:38:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4295 transitions. [2023-08-27 06:38:51,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884768451519537 [2023-08-27 06:38:51,500 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4295 transitions. [2023-08-27 06:38:51,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4295 transitions. [2023-08-27 06:38:51,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:51,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4295 transitions. [2023-08-27 06:38:51,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 268.4375) internal successors, (4295), 16 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:51,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:51,512 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:51,512 INFO L175 Difference]: Start difference. First operand has 167 places, 270 transitions, 3242 flow. Second operand 16 states and 4295 transitions. [2023-08-27 06:38:51,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 368 transitions, 5174 flow [2023-08-27 06:38:51,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 368 transitions, 4781 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-08-27 06:38:51,576 INFO L231 Difference]: Finished difference. Result has 178 places, 324 transitions, 4306 flow [2023-08-27 06:38:51,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=2901, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4306, PETRI_PLACES=178, PETRI_TRANSITIONS=324} [2023-08-27 06:38:51,577 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 130 predicate places. [2023-08-27 06:38:51,577 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 324 transitions, 4306 flow [2023-08-27 06:38:51,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.73333333333335) internal successors, (3986), 15 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:51,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:51,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:51,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 06:38:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:51,784 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:51,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1435211905, now seen corresponding path program 16 times [2023-08-27 06:38:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647517937] [2023-08-27 06:38:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:51,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647517937] [2023-08-27 06:38:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647517937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310597137] [2023-08-27 06:38:51,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:38:51,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:51,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:51,885 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:51,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 06:38:52,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:38:52,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:52,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:52,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:52,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310597137] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:52,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:52,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-27 06:38:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471438350] [2023-08-27 06:38:52,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:52,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:38:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:38:52,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:38:52,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:52,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 324 transitions, 4306 flow. Second operand has 13 states, 13 states have (on average 266.2307692307692) internal successors, (3461), 13 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:53,073 INFO L124 PetriNetUnfolderBase]: 1209/1832 cut-off events. [2023-08-27 06:38:53,073 INFO L125 PetriNetUnfolderBase]: For 21383/21383 co-relation queries the response was YES. [2023-08-27 06:38:53,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13826 conditions, 1832 events. 1209/1832 cut-off events. For 21383/21383 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7976 event pairs, 80 based on Foata normal form. 38/1870 useless extension candidates. Maximal degree in co-relation 13752. Up to 574 conditions per place. [2023-08-27 06:38:53,086 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 164 selfloop transitions, 293 changer transitions 0/457 dead transitions. [2023-08-27 06:38:53,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 457 transitions, 7074 flow [2023-08-27 06:38:53,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:38:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:38:53,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4572 transitions. [2023-08-27 06:38:53,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920575466076446 [2023-08-27 06:38:53,089 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4572 transitions. [2023-08-27 06:38:53,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4572 transitions. [2023-08-27 06:38:53,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:53,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4572 transitions. [2023-08-27 06:38:53,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 268.94117647058823) internal successors, (4572), 17 states have internal predecessors, (4572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:53,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:53,097 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:53,097 INFO L175 Difference]: Start difference. First operand has 178 places, 324 transitions, 4306 flow. Second operand 17 states and 4572 transitions. [2023-08-27 06:38:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 457 transitions, 7074 flow [2023-08-27 06:38:53,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 457 transitions, 6614 flow, removed 133 selfloop flow, removed 8 redundant places. [2023-08-27 06:38:53,170 INFO L231 Difference]: Finished difference. Result has 189 places, 420 transitions, 6394 flow [2023-08-27 06:38:53,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=3852, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6394, PETRI_PLACES=189, PETRI_TRANSITIONS=420} [2023-08-27 06:38:53,171 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 141 predicate places. [2023-08-27 06:38:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 420 transitions, 6394 flow [2023-08-27 06:38:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.2307692307692) internal successors, (3461), 13 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:53,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:53,172 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:53,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-27 06:38:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:53,378 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:53,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash 7807397, now seen corresponding path program 17 times [2023-08-27 06:38:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:53,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792635342] [2023-08-27 06:38:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792635342] [2023-08-27 06:38:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792635342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368074185] [2023-08-27 06:38:53,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:38:53,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:53,473 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:53,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 06:38:53,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:53,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:53,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:53,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:53,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:53,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368074185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:53,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:53,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:38:53,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081303604] [2023-08-27 06:38:53,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:53,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:38:53,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:38:53,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:38:53,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:53,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 420 transitions, 6394 flow. Second operand has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:53,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:53,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:53,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:54,684 INFO L124 PetriNetUnfolderBase]: 1423/2182 cut-off events. [2023-08-27 06:38:54,685 INFO L125 PetriNetUnfolderBase]: For 28799/28799 co-relation queries the response was YES. [2023-08-27 06:38:54,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18041 conditions, 2182 events. 1423/2182 cut-off events. For 28799/28799 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10033 event pairs, 87 based on Foata normal form. 24/2206 useless extension candidates. Maximal degree in co-relation 17962. Up to 907 conditions per place. [2023-08-27 06:38:54,705 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 294 selfloop transitions, 261 changer transitions 0/555 dead transitions. [2023-08-27 06:38:54,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 555 transitions, 9353 flow [2023-08-27 06:38:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:38:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:38:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6178 transitions. [2023-08-27 06:38:54,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38872459573397095 [2023-08-27 06:38:54,717 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6178 transitions. [2023-08-27 06:38:54,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6178 transitions. [2023-08-27 06:38:54,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:54,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6178 transitions. [2023-08-27 06:38:54,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 268.60869565217394) internal successors, (6178), 23 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:54,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:54,732 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:54,732 INFO L175 Difference]: Start difference. First operand has 189 places, 420 transitions, 6394 flow. Second operand 23 states and 6178 transitions. [2023-08-27 06:38:54,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 555 transitions, 9353 flow [2023-08-27 06:38:54,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 555 transitions, 8810 flow, removed 263 selfloop flow, removed 3 redundant places. [2023-08-27 06:38:54,928 INFO L231 Difference]: Finished difference. Result has 216 places, 504 transitions, 8092 flow [2023-08-27 06:38:54,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=5903, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8092, PETRI_PLACES=216, PETRI_TRANSITIONS=504} [2023-08-27 06:38:54,928 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 168 predicate places. [2023-08-27 06:38:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 504 transitions, 8092 flow [2023-08-27 06:38:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:54,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 06:38:55,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-27 06:38:55,130 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:55,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -279741287, now seen corresponding path program 18 times [2023-08-27 06:38:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:55,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865565898] [2023-08-27 06:38:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:55,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:55,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865565898] [2023-08-27 06:38:55,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865565898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:55,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234206904] [2023-08-27 06:38:55,222 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:38:55,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:55,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:55,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:55,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 06:38:55,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:38:55,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:55,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:55,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:55,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:55,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234206904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:55,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:55,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:38:55,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728973264] [2023-08-27 06:38:55,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:55,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:38:55,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:55,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:38:55,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:38:55,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:55,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 504 transitions, 8092 flow. Second operand has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:55,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:55,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:56,530 INFO L124 PetriNetUnfolderBase]: 1595/2446 cut-off events. [2023-08-27 06:38:56,530 INFO L125 PetriNetUnfolderBase]: For 43681/43681 co-relation queries the response was YES. [2023-08-27 06:38:56,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21184 conditions, 2446 events. 1595/2446 cut-off events. For 43681/43681 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11429 event pairs, 307 based on Foata normal form. 80/2526 useless extension candidates. Maximal degree in co-relation 21096. Up to 2103 conditions per place. [2023-08-27 06:38:56,550 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 508 selfloop transitions, 96 changer transitions 0/604 dead transitions. [2023-08-27 06:38:56,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 604 transitions, 11029 flow [2023-08-27 06:38:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:38:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:38:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5112 transitions. [2023-08-27 06:38:56,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389367050041892 [2023-08-27 06:38:56,553 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5112 transitions. [2023-08-27 06:38:56,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5112 transitions. [2023-08-27 06:38:56,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:56,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5112 transitions. [2023-08-27 06:38:56,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 269.05263157894734) internal successors, (5112), 19 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:56,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:56,562 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:56,562 INFO L175 Difference]: Start difference. First operand has 216 places, 504 transitions, 8092 flow. Second operand 19 states and 5112 transitions. [2023-08-27 06:38:56,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 604 transitions, 11029 flow [2023-08-27 06:38:56,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 604 transitions, 10757 flow, removed 78 selfloop flow, removed 10 redundant places. [2023-08-27 06:38:56,729 INFO L231 Difference]: Finished difference. Result has 236 places, 567 transitions, 9728 flow [2023-08-27 06:38:56,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=7820, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9728, PETRI_PLACES=236, PETRI_TRANSITIONS=567} [2023-08-27 06:38:56,729 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 188 predicate places. [2023-08-27 06:38:56,730 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 567 transitions, 9728 flow [2023-08-27 06:38:56,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:56,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:56,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:56,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-27 06:38:56,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 06:38:56,936 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:56,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1684228991, now seen corresponding path program 19 times [2023-08-27 06:38:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569176513] [2023-08-27 06:38:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:57,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569176513] [2023-08-27 06:38:57,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569176513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:57,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831254451] [2023-08-27 06:38:57,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:38:57,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:57,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:57,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:57,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 06:38:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:57,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:57,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:57,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:57,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831254451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:57,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:57,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-27 06:38:57,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212499793] [2023-08-27 06:38:57,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:57,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:38:57,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:57,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:38:57,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:38:57,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:57,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 567 transitions, 9728 flow. Second operand has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:57,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:57,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:57,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:38:58,177 INFO L124 PetriNetUnfolderBase]: 1596/2453 cut-off events. [2023-08-27 06:38:58,177 INFO L125 PetriNetUnfolderBase]: For 49148/49148 co-relation queries the response was YES. [2023-08-27 06:38:58,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22409 conditions, 2453 events. 1596/2453 cut-off events. For 49148/49148 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11560 event pairs, 326 based on Foata normal form. 8/2461 useless extension candidates. Maximal degree in co-relation 22308. Up to 2186 conditions per place. [2023-08-27 06:38:58,204 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 502 selfloop transitions, 83 changer transitions 2/587 dead transitions. [2023-08-27 06:38:58,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 587 transitions, 11210 flow [2023-08-27 06:38:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:38:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:38:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2956 transitions. [2023-08-27 06:38:58,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888961978687015 [2023-08-27 06:38:58,206 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2956 transitions. [2023-08-27 06:38:58,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2956 transitions. [2023-08-27 06:38:58,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:38:58,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2956 transitions. [2023-08-27 06:38:58,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 268.72727272727275) internal successors, (2956), 11 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:58,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:58,211 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:58,211 INFO L175 Difference]: Start difference. First operand has 236 places, 567 transitions, 9728 flow. Second operand 11 states and 2956 transitions. [2023-08-27 06:38:58,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 587 transitions, 11210 flow [2023-08-27 06:38:58,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 587 transitions, 10100 flow, removed 527 selfloop flow, removed 9 redundant places. [2023-08-27 06:38:58,457 INFO L231 Difference]: Finished difference. Result has 238 places, 569 transitions, 8867 flow [2023-08-27 06:38:58,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=8611, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8867, PETRI_PLACES=238, PETRI_TRANSITIONS=569} [2023-08-27 06:38:58,457 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 190 predicate places. [2023-08-27 06:38:58,457 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 569 transitions, 8867 flow [2023-08-27 06:38:58,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.0) internal successors, (3458), 13 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:58,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:38:58,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:38:58,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 06:38:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 06:38:58,659 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:38:58,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:38:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1493233365, now seen corresponding path program 20 times [2023-08-27 06:38:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:38:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423696562] [2023-08-27 06:38:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:38:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:38:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:38:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:58,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:38:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423696562] [2023-08-27 06:38:58,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423696562] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:38:58,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822857312] [2023-08-27 06:38:58,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:38:58,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:38:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:38:58,753 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:38:58,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 06:38:58,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:38:58,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:38:58,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:38:58,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:38:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:59,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:38:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:38:59,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822857312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:38:59,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:38:59,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:38:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959550073] [2023-08-27 06:38:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:38:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:38:59,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:38:59,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:38:59,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:38:59,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:38:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 569 transitions, 8867 flow. Second operand has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:38:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:38:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:38:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:00,068 INFO L124 PetriNetUnfolderBase]: 1719/2624 cut-off events. [2023-08-27 06:39:00,069 INFO L125 PetriNetUnfolderBase]: For 55141/55141 co-relation queries the response was YES. [2023-08-27 06:39:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23257 conditions, 2624 events. 1719/2624 cut-off events. For 55141/55141 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 12347 event pairs, 233 based on Foata normal form. 30/2654 useless extension candidates. Maximal degree in co-relation 23158. Up to 1849 conditions per place. [2023-08-27 06:39:00,094 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 452 selfloop transitions, 196 changer transitions 0/648 dead transitions. [2023-08-27 06:39:00,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 648 transitions, 11683 flow [2023-08-27 06:39:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:39:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:39:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4576 transitions. [2023-08-27 06:39:00,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895462671320337 [2023-08-27 06:39:00,100 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4576 transitions. [2023-08-27 06:39:00,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4576 transitions. [2023-08-27 06:39:00,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:00,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4576 transitions. [2023-08-27 06:39:00,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 269.1764705882353) internal successors, (4576), 17 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:00,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:00,111 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:00,111 INFO L175 Difference]: Start difference. First operand has 238 places, 569 transitions, 8867 flow. Second operand 17 states and 4576 transitions. [2023-08-27 06:39:00,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 648 transitions, 11683 flow [2023-08-27 06:39:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 648 transitions, 11531 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-08-27 06:39:00,381 INFO L231 Difference]: Finished difference. Result has 248 places, 609 transitions, 10385 flow [2023-08-27 06:39:00,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=8667, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10385, PETRI_PLACES=248, PETRI_TRANSITIONS=609} [2023-08-27 06:39:00,382 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 200 predicate places. [2023-08-27 06:39:00,382 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 609 transitions, 10385 flow [2023-08-27 06:39:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:00,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:00,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:00,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:00,583 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:00,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1682374635, now seen corresponding path program 21 times [2023-08-27 06:39:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045408865] [2023-08-27 06:39:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045408865] [2023-08-27 06:39:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045408865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544879151] [2023-08-27 06:39:00,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:39:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:00,677 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:00,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 06:39:00,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:39:00,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:00,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:00,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:01,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:39:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544879151] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:01,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-27 06:39:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473850957] [2023-08-27 06:39:01,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:01,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:39:01,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:01,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:39:01,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:39:01,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 609 transitions, 10385 flow. Second operand has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:01,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:02,035 INFO L124 PetriNetUnfolderBase]: 1868/2827 cut-off events. [2023-08-27 06:39:02,035 INFO L125 PetriNetUnfolderBase]: For 66015/66015 co-relation queries the response was YES. [2023-08-27 06:39:02,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27626 conditions, 2827 events. 1868/2827 cut-off events. For 66015/66015 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13413 event pairs, 340 based on Foata normal form. 8/2835 useless extension candidates. Maximal degree in co-relation 27526. Up to 2450 conditions per place. [2023-08-27 06:39:02,068 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 553 selfloop transitions, 117 changer transitions 2/672 dead transitions. [2023-08-27 06:39:02,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 672 transitions, 13366 flow [2023-08-27 06:39:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:39:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:39:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2957 transitions. [2023-08-27 06:39:02,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38902775950532825 [2023-08-27 06:39:02,070 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2957 transitions. [2023-08-27 06:39:02,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2957 transitions. [2023-08-27 06:39:02,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:02,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2957 transitions. [2023-08-27 06:39:02,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 268.8181818181818) internal successors, (2957), 11 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:02,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:02,079 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:02,079 INFO L175 Difference]: Start difference. First operand has 248 places, 609 transitions, 10385 flow. Second operand 11 states and 2957 transitions. [2023-08-27 06:39:02,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 672 transitions, 13366 flow [2023-08-27 06:39:02,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 672 transitions, 11725 flow, removed 693 selfloop flow, removed 15 redundant places. [2023-08-27 06:39:02,482 INFO L231 Difference]: Finished difference. Result has 248 places, 647 transitions, 10409 flow [2023-08-27 06:39:02,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=9392, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10409, PETRI_PLACES=248, PETRI_TRANSITIONS=647} [2023-08-27 06:39:02,483 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 200 predicate places. [2023-08-27 06:39:02,483 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 647 transitions, 10409 flow [2023-08-27 06:39:02,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:02,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:02,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-27 06:39:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-27 06:39:02,684 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:02,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1209981521, now seen corresponding path program 22 times [2023-08-27 06:39:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:02,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189978070] [2023-08-27 06:39:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:02,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189978070] [2023-08-27 06:39:02,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189978070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163680823] [2023-08-27 06:39:02,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:39:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:02,777 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:02,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 06:39:03,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:39:03,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:03,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:03,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:03,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:03,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163680823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:03,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:39:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418456530] [2023-08-27 06:39:03,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:39:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:39:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:39:03,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:03,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 647 transitions, 10409 flow. Second operand has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:03,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:03,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:03,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:04,215 INFO L124 PetriNetUnfolderBase]: 2009/3026 cut-off events. [2023-08-27 06:39:04,216 INFO L125 PetriNetUnfolderBase]: For 56361/56361 co-relation queries the response was YES. [2023-08-27 06:39:04,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27130 conditions, 3026 events. 2009/3026 cut-off events. For 56361/56361 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 14430 event pairs, 358 based on Foata normal form. 8/3034 useless extension candidates. Maximal degree in co-relation 27032. Up to 2606 conditions per place. [2023-08-27 06:39:04,246 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 579 selfloop transitions, 134 changer transitions 4/717 dead transitions. [2023-08-27 06:39:04,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 717 transitions, 13169 flow [2023-08-27 06:39:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:39:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:39:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3757 transitions. [2023-08-27 06:39:04,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883605540624354 [2023-08-27 06:39:04,249 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3757 transitions. [2023-08-27 06:39:04,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3757 transitions. [2023-08-27 06:39:04,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:04,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3757 transitions. [2023-08-27 06:39:04,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 268.35714285714283) internal successors, (3757), 14 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:04,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:04,258 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:04,259 INFO L175 Difference]: Start difference. First operand has 248 places, 647 transitions, 10409 flow. Second operand 14 states and 3757 transitions. [2023-08-27 06:39:04,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 717 transitions, 13169 flow [2023-08-27 06:39:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 717 transitions, 12955 flow, removed 41 selfloop flow, removed 5 redundant places. [2023-08-27 06:39:04,559 INFO L231 Difference]: Finished difference. Result has 260 places, 688 transitions, 11536 flow [2023-08-27 06:39:04,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=10244, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11536, PETRI_PLACES=260, PETRI_TRANSITIONS=688} [2023-08-27 06:39:04,560 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 212 predicate places. [2023-08-27 06:39:04,560 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 688 transitions, 11536 flow [2023-08-27 06:39:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:04,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:04,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:04,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 06:39:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-27 06:39:04,761 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:04,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1853041736, now seen corresponding path program 23 times [2023-08-27 06:39:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735726334] [2023-08-27 06:39:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735726334] [2023-08-27 06:39:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735726334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137247082] [2023-08-27 06:39:04,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:39:04,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:04,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:04,867 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:04,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 06:39:05,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:39:05,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:05,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:05,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:05,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137247082] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:05,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:05,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-27 06:39:05,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953191618] [2023-08-27 06:39:05,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:05,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:39:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:39:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:39:05,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:05,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 688 transitions, 11536 flow. Second operand has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:05,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:05,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:05,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:06,266 INFO L124 PetriNetUnfolderBase]: 2215/3304 cut-off events. [2023-08-27 06:39:06,266 INFO L125 PetriNetUnfolderBase]: For 75278/75278 co-relation queries the response was YES. [2023-08-27 06:39:06,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31178 conditions, 3304 events. 2215/3304 cut-off events. For 75278/75278 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 15719 event pairs, 66 based on Foata normal form. 28/3332 useless extension candidates. Maximal degree in co-relation 31076. Up to 2220 conditions per place. [2023-08-27 06:39:06,303 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 555 selfloop transitions, 295 changer transitions 0/850 dead transitions. [2023-08-27 06:39:06,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 850 transitions, 16475 flow [2023-08-27 06:39:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:39:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:39:06,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4571 transitions. [2023-08-27 06:39:06,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38912062654294716 [2023-08-27 06:39:06,307 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4571 transitions. [2023-08-27 06:39:06,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4571 transitions. [2023-08-27 06:39:06,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:06,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4571 transitions. [2023-08-27 06:39:06,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 268.88235294117646) internal successors, (4571), 17 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:06,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:06,318 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:06,318 INFO L175 Difference]: Start difference. First operand has 260 places, 688 transitions, 11536 flow. Second operand 17 states and 4571 transitions. [2023-08-27 06:39:06,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 850 transitions, 16475 flow [2023-08-27 06:39:06,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 850 transitions, 16230 flow, removed 83 selfloop flow, removed 7 redundant places. [2023-08-27 06:39:06,796 INFO L231 Difference]: Finished difference. Result has 273 places, 823 transitions, 15325 flow [2023-08-27 06:39:06,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=11217, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15325, PETRI_PLACES=273, PETRI_TRANSITIONS=823} [2023-08-27 06:39:06,796 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 225 predicate places. [2023-08-27 06:39:06,796 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 823 transitions, 15325 flow [2023-08-27 06:39:06,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:06,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:06,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:06,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:06,997 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:06,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1485441435, now seen corresponding path program 24 times [2023-08-27 06:39:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066764265] [2023-08-27 06:39:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:07,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066764265] [2023-08-27 06:39:07,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066764265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049568515] [2023-08-27 06:39:07,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:39:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:07,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:07,077 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:07,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-27 06:39:07,307 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:39:07,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:07,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:07,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:07,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049568515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:07,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:07,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:39:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758256348] [2023-08-27 06:39:07,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:39:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:39:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:39:07,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:07,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 823 transitions, 15325 flow. Second operand has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:07,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:07,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:07,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:08,688 INFO L124 PetriNetUnfolderBase]: 2216/3311 cut-off events. [2023-08-27 06:39:08,688 INFO L125 PetriNetUnfolderBase]: For 82303/82303 co-relation queries the response was YES. [2023-08-27 06:39:08,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32920 conditions, 3311 events. 2216/3311 cut-off events. For 82303/82303 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15887 event pairs, 261 based on Foata normal form. 8/3319 useless extension candidates. Maximal degree in co-relation 32812. Up to 2285 conditions per place. [2023-08-27 06:39:08,724 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 528 selfloop transitions, 320 changer transitions 2/850 dead transitions. [2023-08-27 06:39:08,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 850 transitions, 17632 flow [2023-08-27 06:39:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:39:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:39:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3229 transitions. [2023-08-27 06:39:08,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894114809454896 [2023-08-27 06:39:08,726 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3229 transitions. [2023-08-27 06:39:08,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3229 transitions. [2023-08-27 06:39:08,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:08,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3229 transitions. [2023-08-27 06:39:08,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 269.0833333333333) internal successors, (3229), 12 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:08,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:08,732 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:08,732 INFO L175 Difference]: Start difference. First operand has 273 places, 823 transitions, 15325 flow. Second operand 12 states and 3229 transitions. [2023-08-27 06:39:08,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 850 transitions, 17632 flow [2023-08-27 06:39:09,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 850 transitions, 15950 flow, removed 759 selfloop flow, removed 4 redundant places. [2023-08-27 06:39:09,248 INFO L231 Difference]: Finished difference. Result has 281 places, 824 transitions, 14513 flow [2023-08-27 06:39:09,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=13733, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14513, PETRI_PLACES=281, PETRI_TRANSITIONS=824} [2023-08-27 06:39:09,249 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 233 predicate places. [2023-08-27 06:39:09,249 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 824 transitions, 14513 flow [2023-08-27 06:39:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.0) internal successors, (3192), 12 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:09,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:09,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:09,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:09,450 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:09,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:09,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1275023871, now seen corresponding path program 25 times [2023-08-27 06:39:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264932497] [2023-08-27 06:39:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:09,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264932497] [2023-08-27 06:39:09,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264932497] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586847153] [2023-08-27 06:39:09,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:39:09,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:09,533 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:09,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-27 06:39:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:09,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:09,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:09,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:09,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586847153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:09,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:09,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 06:39:09,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58460747] [2023-08-27 06:39:09,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:39:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:09,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:39:09,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:39:09,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:09,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 824 transitions, 14513 flow. Second operand has 13 states, 13 states have (on average 266.0769230769231) internal successors, (3459), 13 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:09,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:09,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:09,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:10,956 INFO L124 PetriNetUnfolderBase]: 2215/3312 cut-off events. [2023-08-27 06:39:10,956 INFO L125 PetriNetUnfolderBase]: For 63467/63467 co-relation queries the response was YES. [2023-08-27 06:39:10,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31284 conditions, 3312 events. 2215/3312 cut-off events. For 63467/63467 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15853 event pairs, 355 based on Foata normal form. 2/3314 useless extension candidates. Maximal degree in co-relation 31174. Up to 2713 conditions per place. [2023-08-27 06:39:10,994 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 713 selfloop transitions, 129 changer transitions 4/846 dead transitions. [2023-08-27 06:39:10,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 846 transitions, 16537 flow [2023-08-27 06:39:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:39:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:39:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2689 transitions. [2023-08-27 06:39:10,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38914616497829235 [2023-08-27 06:39:10,996 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2689 transitions. [2023-08-27 06:39:10,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2689 transitions. [2023-08-27 06:39:10,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:10,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2689 transitions. [2023-08-27 06:39:10,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.9) internal successors, (2689), 10 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:11,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:11,001 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:11,001 INFO L175 Difference]: Start difference. First operand has 281 places, 824 transitions, 14513 flow. Second operand 10 states and 2689 transitions. [2023-08-27 06:39:11,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 846 transitions, 16537 flow [2023-08-27 06:39:11,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 846 transitions, 15857 flow, removed 27 selfloop flow, removed 10 redundant places. [2023-08-27 06:39:11,407 INFO L231 Difference]: Finished difference. Result has 280 places, 823 transitions, 14083 flow [2023-08-27 06:39:11,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=13834, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14083, PETRI_PLACES=280, PETRI_TRANSITIONS=823} [2023-08-27 06:39:11,408 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 232 predicate places. [2023-08-27 06:39:11,409 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 823 transitions, 14083 flow [2023-08-27 06:39:11,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.0769230769231) internal successors, (3459), 13 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:11,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:11,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:11,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:11,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-08-27 06:39:11,616 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:11,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1582866746, now seen corresponding path program 26 times [2023-08-27 06:39:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:11,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114018424] [2023-08-27 06:39:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:11,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:11,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:11,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114018424] [2023-08-27 06:39:11,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114018424] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:11,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017192553] [2023-08-27 06:39:11,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:39:11,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:11,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:11,695 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:11,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-27 06:39:11,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:39:11,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:11,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:11,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:11,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:12,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017192553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:12,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:12,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-27 06:39:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363300697] [2023-08-27 06:39:12,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:12,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:39:12,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:12,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:39:12,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:39:12,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:12,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 823 transitions, 14083 flow. Second operand has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:12,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:12,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:12,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:13,090 INFO L124 PetriNetUnfolderBase]: 2342/3499 cut-off events. [2023-08-27 06:39:13,091 INFO L125 PetriNetUnfolderBase]: For 67005/67005 co-relation queries the response was YES. [2023-08-27 06:39:13,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32278 conditions, 3499 events. 2342/3499 cut-off events. For 67005/67005 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16961 event pairs, 70 based on Foata normal form. 28/3527 useless extension candidates. Maximal degree in co-relation 32166. Up to 2449 conditions per place. [2023-08-27 06:39:13,133 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 684 selfloop transitions, 233 changer transitions 1/918 dead transitions. [2023-08-27 06:39:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 918 transitions, 17285 flow [2023-08-27 06:39:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:39:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:39:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3768 transitions. [2023-08-27 06:39:13,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38949762249328096 [2023-08-27 06:39:13,135 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3768 transitions. [2023-08-27 06:39:13,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3768 transitions. [2023-08-27 06:39:13,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:13,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3768 transitions. [2023-08-27 06:39:13,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 269.14285714285717) internal successors, (3768), 14 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:13,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:13,142 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:13,142 INFO L175 Difference]: Start difference. First operand has 280 places, 823 transitions, 14083 flow. Second operand 14 states and 3768 transitions. [2023-08-27 06:39:13,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 918 transitions, 17285 flow [2023-08-27 06:39:13,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 918 transitions, 17023 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-27 06:39:13,616 INFO L231 Difference]: Finished difference. Result has 287 places, 882 transitions, 15512 flow [2023-08-27 06:39:13,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=13821, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15512, PETRI_PLACES=287, PETRI_TRANSITIONS=882} [2023-08-27 06:39:13,617 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 239 predicate places. [2023-08-27 06:39:13,617 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 882 transitions, 15512 flow [2023-08-27 06:39:13,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 265.9230769230769) internal successors, (3457), 13 states have internal predecessors, (3457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:13,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:13,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:13,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:13,824 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:13,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 690692040, now seen corresponding path program 27 times [2023-08-27 06:39:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:13,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873444835] [2023-08-27 06:39:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:13,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:13,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873444835] [2023-08-27 06:39:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873444835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258721396] [2023-08-27 06:39:13,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:39:13,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:13,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:13,929 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:13,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-27 06:39:14,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:39:14,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:14,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:14,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:14,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258721396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:14,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:39:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552120638] [2023-08-27 06:39:14,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:14,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:39:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:14,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:39:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:39:14,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:14,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 882 transitions, 15512 flow. Second operand has 15 states, 15 states have (on average 265.73333333333335) internal successors, (3986), 15 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:14,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:14,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:14,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:15,552 INFO L124 PetriNetUnfolderBase]: 2472/3717 cut-off events. [2023-08-27 06:39:15,552 INFO L125 PetriNetUnfolderBase]: For 83257/83257 co-relation queries the response was YES. [2023-08-27 06:39:15,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35227 conditions, 3717 events. 2472/3717 cut-off events. For 83257/83257 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 18511 event pairs, 70 based on Foata normal form. 44/3761 useless extension candidates. Maximal degree in co-relation 35112. Up to 2220 conditions per place. [2023-08-27 06:39:15,590 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 631 selfloop transitions, 337 changer transitions 6/974 dead transitions. [2023-08-27 06:39:15,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 974 transitions, 19029 flow [2023-08-27 06:39:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:39:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:39:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4576 transitions. [2023-08-27 06:39:15,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895462671320337 [2023-08-27 06:39:15,592 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4576 transitions. [2023-08-27 06:39:15,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4576 transitions. [2023-08-27 06:39:15,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:15,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4576 transitions. [2023-08-27 06:39:15,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 269.1764705882353) internal successors, (4576), 17 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:15,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:15,599 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:15,599 INFO L175 Difference]: Start difference. First operand has 287 places, 882 transitions, 15512 flow. Second operand 17 states and 4576 transitions. [2023-08-27 06:39:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 974 transitions, 19029 flow [2023-08-27 06:39:16,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 974 transitions, 18434 flow, removed 181 selfloop flow, removed 6 redundant places. [2023-08-27 06:39:16,117 INFO L231 Difference]: Finished difference. Result has 300 places, 927 transitions, 17045 flow [2023-08-27 06:39:16,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=14993, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=17045, PETRI_PLACES=300, PETRI_TRANSITIONS=927} [2023-08-27 06:39:16,119 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 252 predicate places. [2023-08-27 06:39:16,119 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 927 transitions, 17045 flow [2023-08-27 06:39:16,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.73333333333335) internal successors, (3986), 15 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:16,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:16,120 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:16,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:16,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-27 06:39:16,326 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:16,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1806491718, now seen corresponding path program 28 times [2023-08-27 06:39:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:16,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388780140] [2023-08-27 06:39:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:16,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:16,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388780140] [2023-08-27 06:39:16,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388780140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:16,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810112732] [2023-08-27 06:39:16,416 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:39:16,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:16,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:16,421 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:16,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-27 06:39:16,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:39:16,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:16,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:16,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:16,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810112732] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:16,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:16,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-27 06:39:16,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825575648] [2023-08-27 06:39:16,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:39:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:16,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:39:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:39:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:16,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 927 transitions, 17045 flow. Second operand has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:16,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:16,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:16,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:18,181 INFO L124 PetriNetUnfolderBase]: 2508/3779 cut-off events. [2023-08-27 06:39:18,181 INFO L125 PetriNetUnfolderBase]: For 81298/81298 co-relation queries the response was YES. [2023-08-27 06:39:18,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35706 conditions, 3779 events. 2508/3779 cut-off events. For 81298/81298 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 18969 event pairs, 76 based on Foata normal form. 34/3813 useless extension candidates. Maximal degree in co-relation 35588. Up to 2620 conditions per place. [2023-08-27 06:39:18,224 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 702 selfloop transitions, 291 changer transitions 0/993 dead transitions. [2023-08-27 06:39:18,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 993 transitions, 19531 flow [2023-08-27 06:39:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:39:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:39:18,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6167 transitions. [2023-08-27 06:39:18,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388032467123891 [2023-08-27 06:39:18,227 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6167 transitions. [2023-08-27 06:39:18,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6167 transitions. [2023-08-27 06:39:18,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:18,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6167 transitions. [2023-08-27 06:39:18,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 268.1304347826087) internal successors, (6167), 23 states have internal predecessors, (6167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:18,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:18,237 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:18,237 INFO L175 Difference]: Start difference. First operand has 300 places, 927 transitions, 17045 flow. Second operand 23 states and 6167 transitions. [2023-08-27 06:39:18,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 993 transitions, 19531 flow [2023-08-27 06:39:18,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 993 transitions, 18614 flow, removed 326 selfloop flow, removed 6 redundant places. [2023-08-27 06:39:18,792 INFO L231 Difference]: Finished difference. Result has 317 places, 956 transitions, 17075 flow [2023-08-27 06:39:18,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=15915, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=17075, PETRI_PLACES=317, PETRI_TRANSITIONS=956} [2023-08-27 06:39:18,793 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 269 predicate places. [2023-08-27 06:39:18,793 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 956 transitions, 17075 flow [2023-08-27 06:39:18,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:18,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:18,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:18,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:18,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:18,994 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:18,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1395200449, now seen corresponding path program 29 times [2023-08-27 06:39:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:18,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605600999] [2023-08-27 06:39:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:19,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:19,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605600999] [2023-08-27 06:39:19,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605600999] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:19,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931523779] [2023-08-27 06:39:19,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:39:19,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:19,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:19,069 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:19,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-27 06:39:19,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:39:19,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:19,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:19,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:19,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:19,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931523779] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:19,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 06:39:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456196987] [2023-08-27 06:39:19,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:39:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:39:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:39:19,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:19,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 956 transitions, 17075 flow. Second operand has 11 states, 11 states have (on average 266.09090909090907) internal successors, (2927), 11 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:19,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:19,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:19,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:20,719 INFO L124 PetriNetUnfolderBase]: 2506/3777 cut-off events. [2023-08-27 06:39:20,720 INFO L125 PetriNetUnfolderBase]: For 73193/73193 co-relation queries the response was YES. [2023-08-27 06:39:20,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34861 conditions, 3777 events. 2506/3777 cut-off events. For 73193/73193 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 18935 event pairs, 438 based on Foata normal form. 2/3779 useless extension candidates. Maximal degree in co-relation 34738. Up to 3194 conditions per place. [2023-08-27 06:39:20,767 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 866 selfloop transitions, 98 changer transitions 6/970 dead transitions. [2023-08-27 06:39:20,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 970 transitions, 19187 flow [2023-08-27 06:39:20,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:39:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:39:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1884 transitions. [2023-08-27 06:39:20,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38949762249328096 [2023-08-27 06:39:20,769 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1884 transitions. [2023-08-27 06:39:20,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1884 transitions. [2023-08-27 06:39:20,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:20,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1884 transitions. [2023-08-27 06:39:20,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:20,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:20,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:20,772 INFO L175 Difference]: Start difference. First operand has 317 places, 956 transitions, 17075 flow. Second operand 7 states and 1884 transitions. [2023-08-27 06:39:20,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 970 transitions, 19187 flow [2023-08-27 06:39:21,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 970 transitions, 18789 flow, removed 64 selfloop flow, removed 10 redundant places. [2023-08-27 06:39:21,382 INFO L231 Difference]: Finished difference. Result has 314 places, 953 transitions, 16829 flow [2023-08-27 06:39:21,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=16668, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=955, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16829, PETRI_PLACES=314, PETRI_TRANSITIONS=953} [2023-08-27 06:39:21,383 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 266 predicate places. [2023-08-27 06:39:21,383 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 953 transitions, 16829 flow [2023-08-27 06:39:21,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.09090909090907) internal successors, (2927), 11 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:21,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:21,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:21,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-27 06:39:21,584 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:21,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1951292510, now seen corresponding path program 30 times [2023-08-27 06:39:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183082077] [2023-08-27 06:39:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:21,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183082077] [2023-08-27 06:39:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183082077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:21,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766386768] [2023-08-27 06:39:21,658 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:39:21,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:21,659 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:21,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-27 06:39:21,931 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:39:21,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:21,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:21,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:21,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:22,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766386768] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:22,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:22,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-27 06:39:22,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662286400] [2023-08-27 06:39:22,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:22,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 06:39:22,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:22,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 06:39:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:39:22,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:22,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 953 transitions, 16829 flow. Second operand has 11 states, 11 states have (on average 266.09090909090907) internal successors, (2927), 11 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:22,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:22,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:22,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:23,401 INFO L124 PetriNetUnfolderBase]: 2489/3748 cut-off events. [2023-08-27 06:39:23,401 INFO L125 PetriNetUnfolderBase]: For 69187/69187 co-relation queries the response was YES. [2023-08-27 06:39:23,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34715 conditions, 3748 events. 2489/3748 cut-off events. For 69187/69187 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 18744 event pairs, 24 based on Foata normal form. 16/3764 useless extension candidates. Maximal degree in co-relation 34590. Up to 2283 conditions per place. [2023-08-27 06:39:23,447 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 704 selfloop transitions, 293 changer transitions 0/997 dead transitions. [2023-08-27 06:39:23,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 997 transitions, 19525 flow [2023-08-27 06:39:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:39:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:39:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2695 transitions. [2023-08-27 06:39:23,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39001447178002896 [2023-08-27 06:39:23,449 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2695 transitions. [2023-08-27 06:39:23,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2695 transitions. [2023-08-27 06:39:23,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:23,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2695 transitions. [2023-08-27 06:39:23,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 269.5) internal successors, (2695), 10 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:23,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:23,455 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:23,455 INFO L175 Difference]: Start difference. First operand has 314 places, 953 transitions, 16829 flow. Second operand 10 states and 2695 transitions. [2023-08-27 06:39:23,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 997 transitions, 19525 flow [2023-08-27 06:39:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 997 transitions, 19302 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-27 06:39:23,938 INFO L231 Difference]: Finished difference. Result has 313 places, 963 transitions, 17460 flow [2023-08-27 06:39:23,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=16446, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17460, PETRI_PLACES=313, PETRI_TRANSITIONS=963} [2023-08-27 06:39:23,939 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 265 predicate places. [2023-08-27 06:39:23,939 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 963 transitions, 17460 flow [2023-08-27 06:39:23,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 266.09090909090907) internal successors, (2927), 11 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:23,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:23,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:23,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:24,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-27 06:39:24,141 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:24,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash -996204662, now seen corresponding path program 31 times [2023-08-27 06:39:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088595294] [2023-08-27 06:39:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088595294] [2023-08-27 06:39:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088595294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268048053] [2023-08-27 06:39:24,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:39:24,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:24,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:24,221 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:24,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-27 06:39:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:24,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:24,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:24,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:24,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:24,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268048053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:24,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:24,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:39:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966013301] [2023-08-27 06:39:24,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:24,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:39:24,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:39:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:39:24,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:24,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 963 transitions, 17460 flow. Second operand has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:24,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:24,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:24,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:25,995 INFO L124 PetriNetUnfolderBase]: 2571/3870 cut-off events. [2023-08-27 06:39:25,995 INFO L125 PetriNetUnfolderBase]: For 72941/72941 co-relation queries the response was YES. [2023-08-27 06:39:26,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36406 conditions, 3870 events. 2571/3870 cut-off events. For 72941/72941 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19503 event pairs, 96 based on Foata normal form. 16/3886 useless extension candidates. Maximal degree in co-relation 36282. Up to 2461 conditions per place. [2023-08-27 06:39:26,040 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 709 selfloop transitions, 314 changer transitions 1/1024 dead transitions. [2023-08-27 06:39:26,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1024 transitions, 20324 flow [2023-08-27 06:39:26,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:39:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:39:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3501 transitions. [2023-08-27 06:39:26,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897361683179339 [2023-08-27 06:39:26,042 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3501 transitions. [2023-08-27 06:39:26,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3501 transitions. [2023-08-27 06:39:26,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:26,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3501 transitions. [2023-08-27 06:39:26,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.3076923076923) internal successors, (3501), 13 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:26,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:26,048 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:26,048 INFO L175 Difference]: Start difference. First operand has 313 places, 963 transitions, 17460 flow. Second operand 13 states and 3501 transitions. [2023-08-27 06:39:26,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 1024 transitions, 20324 flow [2023-08-27 06:39:26,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 1024 transitions, 20079 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-08-27 06:39:26,704 INFO L231 Difference]: Finished difference. Result has 322 places, 992 transitions, 18606 flow [2023-08-27 06:39:26,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=17194, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18606, PETRI_PLACES=322, PETRI_TRANSITIONS=992} [2023-08-27 06:39:26,705 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 274 predicate places. [2023-08-27 06:39:26,705 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 992 transitions, 18606 flow [2023-08-27 06:39:26,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.1666666666667) internal successors, (3194), 12 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:26,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:26,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-27 06:39:26,907 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:26,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1645831924, now seen corresponding path program 32 times [2023-08-27 06:39:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576821574] [2023-08-27 06:39:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:26,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576821574] [2023-08-27 06:39:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576821574] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:26,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548409961] [2023-08-27 06:39:26,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:39:26,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:26,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:26,997 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:27,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-27 06:39:27,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:39:27,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:27,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:27,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:27,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:27,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:27,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548409961] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:27,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:27,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:39:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383236191] [2023-08-27 06:39:27,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:27,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:39:27,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:27,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:39:27,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:39:27,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:27,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 992 transitions, 18606 flow. Second operand has 12 states, 12 states have (on average 266.0833333333333) internal successors, (3193), 12 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:27,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:27,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:27,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:28,868 INFO L124 PetriNetUnfolderBase]: 2554/3857 cut-off events. [2023-08-27 06:39:28,868 INFO L125 PetriNetUnfolderBase]: For 76631/76631 co-relation queries the response was YES. [2023-08-27 06:39:28,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37128 conditions, 3857 events. 2554/3857 cut-off events. For 76631/76631 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19510 event pairs, 75 based on Foata normal form. 24/3881 useless extension candidates. Maximal degree in co-relation 37002. Up to 2507 conditions per place. [2023-08-27 06:39:28,917 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 682 selfloop transitions, 340 changer transitions 0/1022 dead transitions. [2023-08-27 06:39:28,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 1022 transitions, 20782 flow [2023-08-27 06:39:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 06:39:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 06:39:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4300 transitions. [2023-08-27 06:39:28,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38892908827785816 [2023-08-27 06:39:28,920 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4300 transitions. [2023-08-27 06:39:28,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4300 transitions. [2023-08-27 06:39:28,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:28,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4300 transitions. [2023-08-27 06:39:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 268.75) internal successors, (4300), 16 states have internal predecessors, (4300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:28,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:28,927 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 691.0) internal successors, (11747), 17 states have internal predecessors, (11747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:28,927 INFO L175 Difference]: Start difference. First operand has 322 places, 992 transitions, 18606 flow. Second operand 16 states and 4300 transitions. [2023-08-27 06:39:28,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 1022 transitions, 20782 flow [2023-08-27 06:39:29,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1022 transitions, 20418 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-08-27 06:39:29,596 INFO L231 Difference]: Finished difference. Result has 327 places, 992 transitions, 18891 flow [2023-08-27 06:39:29,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=17936, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=18891, PETRI_PLACES=327, PETRI_TRANSITIONS=992} [2023-08-27 06:39:29,597 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 279 predicate places. [2023-08-27 06:39:29,598 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 992 transitions, 18891 flow [2023-08-27 06:39:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 266.0833333333333) internal successors, (3193), 12 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:29,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:29,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:29,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-27 06:39:29,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2023-08-27 06:39:29,804 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:29,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1609558518, now seen corresponding path program 33 times [2023-08-27 06:39:29,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392177522] [2023-08-27 06:39:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392177522] [2023-08-27 06:39:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392177522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332364230] [2023-08-27 06:39:29,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:39:29,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:29,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:29,889 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:29,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-27 06:39:30,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:39:30,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:30,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 06:39:30,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:30,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:30,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332364230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:30,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:30,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 06:39:30,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399866605] [2023-08-27 06:39:30,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:30,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:39:30,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:30,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:39:30,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:39:30,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:39:30,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 992 transitions, 18891 flow. Second operand has 13 states, 13 states have (on average 266.0769230769231) internal successors, (3459), 13 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:30,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:30,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:39:30,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:31,720 INFO L124 PetriNetUnfolderBase]: 2603/3936 cut-off events. [2023-08-27 06:39:31,720 INFO L125 PetriNetUnfolderBase]: For 80828/80828 co-relation queries the response was YES. [2023-08-27 06:39:31,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38152 conditions, 3936 events. 2603/3936 cut-off events. For 80828/80828 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20019 event pairs, 98 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 38026. Up to 2783 conditions per place. [2023-08-27 06:39:31,770 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 778 selfloop transitions, 266 changer transitions 0/1044 dead transitions. [2023-08-27 06:39:31,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 1044 transitions, 21674 flow [2023-08-27 06:39:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:39:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:39:31,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3757 transitions. [2023-08-27 06:39:31,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3883605540624354 [2023-08-27 06:39:31,773 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3757 transitions. [2023-08-27 06:39:31,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3757 transitions. [2023-08-27 06:39:31,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:31,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3757 transitions. [2023-08-27 06:39:31,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 268.35714285714283) internal successors, (3757), 14 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:31,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:31,779 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:31,779 INFO L175 Difference]: Start difference. First operand has 327 places, 992 transitions, 18891 flow. Second operand 14 states and 3757 transitions. [2023-08-27 06:39:31,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 1044 transitions, 21674 flow [2023-08-27 06:39:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1044 transitions, 20955 flow, removed 51 selfloop flow, removed 13 redundant places. [2023-08-27 06:39:32,460 INFO L231 Difference]: Finished difference. Result has 333 places, 1019 transitions, 19304 flow [2023-08-27 06:39:32,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=18188, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=19304, PETRI_PLACES=333, PETRI_TRANSITIONS=1019} [2023-08-27 06:39:32,461 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 285 predicate places. [2023-08-27 06:39:32,461 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 1019 transitions, 19304 flow [2023-08-27 06:39:32,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.0769230769231) internal successors, (3459), 13 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:32,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:32,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:32,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-08-27 06:39:32,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:32,662 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:32,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:32,663 INFO L85 PathProgramCache]: Analyzing trace with hash 349141072, now seen corresponding path program 34 times [2023-08-27 06:39:32,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:32,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816687714] [2023-08-27 06:39:32,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:32,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:33,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:33,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816687714] [2023-08-27 06:39:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816687714] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:33,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091892003] [2023-08-27 06:39:33,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:39:33,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:33,451 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:33,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-27 06:39:33,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:39:33,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:33,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:39:33,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:34,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091892003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:36,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:36,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:39:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892871153] [2023-08-27 06:39:36,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:39:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:39:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:39:36,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:39:36,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1019 transitions, 19304 flow. Second operand has 20 states, 20 states have (on average 255.8) internal successors, (5116), 20 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:36,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:36,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:39:36,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:38,060 INFO L124 PetriNetUnfolderBase]: 2873/4466 cut-off events. [2023-08-27 06:39:38,061 INFO L125 PetriNetUnfolderBase]: For 101988/101992 co-relation queries the response was YES. [2023-08-27 06:39:38,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43099 conditions, 4466 events. 2873/4466 cut-off events. For 101988/101992 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 24365 event pairs, 37 based on Foata normal form. 4/4464 useless extension candidates. Maximal degree in co-relation 42968. Up to 3614 conditions per place. [2023-08-27 06:39:38,121 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 969 selfloop transitions, 181 changer transitions 26/1186 dead transitions. [2023-08-27 06:39:38,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1186 transitions, 24521 flow [2023-08-27 06:39:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:39:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:39:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2871 transitions. [2023-08-27 06:39:38,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37771345875542695 [2023-08-27 06:39:38,124 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2871 transitions. [2023-08-27 06:39:38,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2871 transitions. [2023-08-27 06:39:38,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:38,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2871 transitions. [2023-08-27 06:39:38,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 261.0) internal successors, (2871), 11 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:38,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:38,128 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:38,128 INFO L175 Difference]: Start difference. First operand has 333 places, 1019 transitions, 19304 flow. Second operand 11 states and 2871 transitions. [2023-08-27 06:39:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1186 transitions, 24521 flow [2023-08-27 06:39:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1186 transitions, 24173 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-08-27 06:39:38,907 INFO L231 Difference]: Finished difference. Result has 344 places, 1108 transitions, 21485 flow [2023-08-27 06:39:38,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=18981, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=850, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21485, PETRI_PLACES=344, PETRI_TRANSITIONS=1108} [2023-08-27 06:39:38,909 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 296 predicate places. [2023-08-27 06:39:38,909 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 1108 transitions, 21485 flow [2023-08-27 06:39:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 255.8) internal successors, (5116), 20 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:38,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:38,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:38,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:39,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:39,117 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:39,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash 251559146, now seen corresponding path program 35 times [2023-08-27 06:39:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:39,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402957445] [2023-08-27 06:39:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:39,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:39,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:39,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402957445] [2023-08-27 06:39:39,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402957445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:39,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276046068] [2023-08-27 06:39:39,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:39:39,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:39,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:39,741 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:39,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-27 06:39:40,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:39:40,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:40,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:39:40,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:40,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:42,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276046068] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:42,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:42,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:39:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202628587] [2023-08-27 06:39:42,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:42,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:39:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:42,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:39:42,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:39:42,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:39:42,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 1108 transitions, 21485 flow. Second operand has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:42,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:39:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:44,236 INFO L124 PetriNetUnfolderBase]: 2918/4572 cut-off events. [2023-08-27 06:39:44,236 INFO L125 PetriNetUnfolderBase]: For 115627/115634 co-relation queries the response was YES. [2023-08-27 06:39:44,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44929 conditions, 4572 events. 2918/4572 cut-off events. For 115627/115634 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25378 event pairs, 34 based on Foata normal form. 7/4574 useless extension candidates. Maximal degree in co-relation 44790. Up to 3898 conditions per place. [2023-08-27 06:39:44,303 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 980 selfloop transitions, 142 changer transitions 46/1178 dead transitions. [2023-08-27 06:39:44,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1178 transitions, 24685 flow [2023-08-27 06:39:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 06:39:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 06:39:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3633 transitions. [2023-08-27 06:39:44,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755426917510854 [2023-08-27 06:39:44,305 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3633 transitions. [2023-08-27 06:39:44,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3633 transitions. [2023-08-27 06:39:44,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:44,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3633 transitions. [2023-08-27 06:39:44,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 259.5) internal successors, (3633), 14 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:44,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:44,314 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 691.0) internal successors, (10365), 15 states have internal predecessors, (10365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:44,314 INFO L175 Difference]: Start difference. First operand has 344 places, 1108 transitions, 21485 flow. Second operand 14 states and 3633 transitions. [2023-08-27 06:39:44,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1178 transitions, 24685 flow [2023-08-27 06:39:45,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1178 transitions, 23847 flow, removed 413 selfloop flow, removed 3 redundant places. [2023-08-27 06:39:45,342 INFO L231 Difference]: Finished difference. Result has 358 places, 1101 transitions, 20958 flow [2023-08-27 06:39:45,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=20812, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20958, PETRI_PLACES=358, PETRI_TRANSITIONS=1101} [2023-08-27 06:39:45,343 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 310 predicate places. [2023-08-27 06:39:45,343 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 1101 transitions, 20958 flow [2023-08-27 06:39:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 256.0) internal successors, (4864), 19 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:45,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:45,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-08-27 06:39:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-08-27 06:39:45,545 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:45,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash 110225298, now seen corresponding path program 36 times [2023-08-27 06:39:45,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:45,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539010375] [2023-08-27 06:39:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:46,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539010375] [2023-08-27 06:39:46,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539010375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:46,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834139860] [2023-08-27 06:39:46,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:39:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:46,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:46,285 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:46,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-27 06:39:46,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:39:46,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:46,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:39:46,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:48,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:49,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834139860] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:49,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:49,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:39:49,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043991354] [2023-08-27 06:39:49,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:49,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:39:49,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:49,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:39:49,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:39:49,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:39:49,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1101 transitions, 20958 flow. Second operand has 19 states, 19 states have (on average 255.78947368421052) internal successors, (4860), 19 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:49,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:49,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:39:49,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:51,608 INFO L124 PetriNetUnfolderBase]: 2852/4456 cut-off events. [2023-08-27 06:39:51,609 INFO L125 PetriNetUnfolderBase]: For 101536/101543 co-relation queries the response was YES. [2023-08-27 06:39:51,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42864 conditions, 4456 events. 2852/4456 cut-off events. For 101536/101543 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 24537 event pairs, 30 based on Foata normal form. 5/4456 useless extension candidates. Maximal degree in co-relation 42720. Up to 3780 conditions per place. [2023-08-27 06:39:51,667 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 960 selfloop transitions, 179 changer transitions 7/1156 dead transitions. [2023-08-27 06:39:51,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1156 transitions, 23987 flow [2023-08-27 06:39:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:39:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:39:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2860 transitions. [2023-08-27 06:39:51,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626628075253254 [2023-08-27 06:39:51,669 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2860 transitions. [2023-08-27 06:39:51,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2860 transitions. [2023-08-27 06:39:51,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:51,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2860 transitions. [2023-08-27 06:39:51,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.0) internal successors, (2860), 11 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:51,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:51,674 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:51,674 INFO L175 Difference]: Start difference. First operand has 358 places, 1101 transitions, 20958 flow. Second operand 11 states and 2860 transitions. [2023-08-27 06:39:51,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1156 transitions, 23987 flow [2023-08-27 06:39:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1156 transitions, 23566 flow, removed 93 selfloop flow, removed 8 redundant places. [2023-08-27 06:39:52,469 INFO L231 Difference]: Finished difference. Result has 358 places, 1110 transitions, 21184 flow [2023-08-27 06:39:52,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=20549, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=922, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21184, PETRI_PLACES=358, PETRI_TRANSITIONS=1110} [2023-08-27 06:39:52,471 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 310 predicate places. [2023-08-27 06:39:52,471 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 1110 transitions, 21184 flow [2023-08-27 06:39:52,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 255.78947368421052) internal successors, (4860), 19 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:52,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:52,471 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:52,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:52,672 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:52,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1127851094, now seen corresponding path program 37 times [2023-08-27 06:39:52,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:52,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62832591] [2023-08-27 06:39:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:53,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62832591] [2023-08-27 06:39:53,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62832591] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:53,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905077053] [2023-08-27 06:39:53,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:39:53,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:53,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:53,494 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:53,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-27 06:39:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:53,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:39:53,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:39:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:54,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:39:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:55,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905077053] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:39:55,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:39:55,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2023-08-27 06:39:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100509142] [2023-08-27 06:39:55,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:39:55,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:39:55,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:39:55,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:39:55,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:39:55,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:39:55,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1110 transitions, 21184 flow. Second operand has 21 states, 21 states have (on average 250.9047619047619) internal successors, (5269), 21 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:55,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:39:55,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:39:55,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:39:57,426 INFO L124 PetriNetUnfolderBase]: 2841/4439 cut-off events. [2023-08-27 06:39:57,426 INFO L125 PetriNetUnfolderBase]: For 98023/98030 co-relation queries the response was YES. [2023-08-27 06:39:57,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42516 conditions, 4439 events. 2841/4439 cut-off events. For 98023/98030 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24366 event pairs, 18 based on Foata normal form. 5/4439 useless extension candidates. Maximal degree in co-relation 42378. Up to 3639 conditions per place. [2023-08-27 06:39:57,483 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 951 selfloop transitions, 185 changer transitions 7/1153 dead transitions. [2023-08-27 06:39:57,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1153 transitions, 24012 flow [2023-08-27 06:39:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:39:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:39:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2555 transitions. [2023-08-27 06:39:57,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36975397973950797 [2023-08-27 06:39:57,485 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2555 transitions. [2023-08-27 06:39:57,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2555 transitions. [2023-08-27 06:39:57,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:39:57,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2555 transitions. [2023-08-27 06:39:57,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 255.5) internal successors, (2555), 10 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:57,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:57,490 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 691.0) internal successors, (7601), 11 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:57,490 INFO L175 Difference]: Start difference. First operand has 358 places, 1110 transitions, 21184 flow. Second operand 10 states and 2555 transitions. [2023-08-27 06:39:57,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1153 transitions, 24012 flow [2023-08-27 06:39:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1153 transitions, 23621 flow, removed 22 selfloop flow, removed 9 redundant places. [2023-08-27 06:39:58,259 INFO L231 Difference]: Finished difference. Result has 360 places, 1113 transitions, 21379 flow [2023-08-27 06:39:58,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=20795, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=925, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=21379, PETRI_PLACES=360, PETRI_TRANSITIONS=1113} [2023-08-27 06:39:58,260 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 312 predicate places. [2023-08-27 06:39:58,260 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 1113 transitions, 21379 flow [2023-08-27 06:39:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 250.9047619047619) internal successors, (5269), 21 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:39:58,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:39:58,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:39:58,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-27 06:39:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-08-27 06:39:58,461 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:39:58,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:39:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1557507680, now seen corresponding path program 38 times [2023-08-27 06:39:58,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:39:58,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074055656] [2023-08-27 06:39:58,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:39:58,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:39:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:39:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:39:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:39:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074055656] [2023-08-27 06:39:59,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074055656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:39:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779650808] [2023-08-27 06:39:59,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:39:59,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:39:59,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:39:59,319 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:39:59,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-27 06:39:59,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:39:59,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:39:59,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:39:59,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:00,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779650808] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:01,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:01,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19 [2023-08-27 06:40:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654355414] [2023-08-27 06:40:01,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:01,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:40:01,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:01,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:40:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:40:01,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:40:01,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1113 transitions, 21379 flow. Second operand has 21 states, 21 states have (on average 250.9047619047619) internal successors, (5269), 21 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:01,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:01,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:40:01,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:03,705 INFO L124 PetriNetUnfolderBase]: 2951/4631 cut-off events. [2023-08-27 06:40:03,705 INFO L125 PetriNetUnfolderBase]: For 109647/109654 co-relation queries the response was YES. [2023-08-27 06:40:03,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44375 conditions, 4631 events. 2951/4631 cut-off events. For 109647/109654 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 25780 event pairs, 64 based on Foata normal form. 5/4631 useless extension candidates. Maximal degree in co-relation 44231. Up to 4189 conditions per place. [2023-08-27 06:40:03,773 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1043 selfloop transitions, 143 changer transitions 10/1206 dead transitions. [2023-08-27 06:40:03,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1206 transitions, 25193 flow [2023-08-27 06:40:03,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:40:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:40:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2297 transitions. [2023-08-27 06:40:03,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693519858498151 [2023-08-27 06:40:03,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2297 transitions. [2023-08-27 06:40:03,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2297 transitions. [2023-08-27 06:40:03,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:03,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2297 transitions. [2023-08-27 06:40:03,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.22222222222223) internal successors, (2297), 9 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:03,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:03,779 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:03,779 INFO L175 Difference]: Start difference. First operand has 360 places, 1113 transitions, 21379 flow. Second operand 9 states and 2297 transitions. [2023-08-27 06:40:03,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1206 transitions, 25193 flow [2023-08-27 06:40:04,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 1206 transitions, 24820 flow, removed 62 selfloop flow, removed 6 redundant places. [2023-08-27 06:40:04,646 INFO L231 Difference]: Finished difference. Result has 365 places, 1163 transitions, 22390 flow [2023-08-27 06:40:04,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=21010, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=972, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22390, PETRI_PLACES=365, PETRI_TRANSITIONS=1163} [2023-08-27 06:40:04,647 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 317 predicate places. [2023-08-27 06:40:04,647 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1163 transitions, 22390 flow [2023-08-27 06:40:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 250.9047619047619) internal successors, (5269), 21 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:04,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:04,648 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:04,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2023-08-27 06:40:04,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:04,848 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:04,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1511962670, now seen corresponding path program 39 times [2023-08-27 06:40:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326763121] [2023-08-27 06:40:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326763121] [2023-08-27 06:40:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326763121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241403360] [2023-08-27 06:40:05,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:40:05,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:05,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:05,360 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:05,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-27 06:40:05,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:40:05,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:05,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:05,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:06,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:07,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241403360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:07,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:07,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:40:07,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904601444] [2023-08-27 06:40:07,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:07,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:40:07,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:40:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:40:07,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:07,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1163 transitions, 22390 flow. Second operand has 20 states, 20 states have (on average 255.75) internal successors, (5115), 20 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:07,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:07,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:07,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:09,646 INFO L124 PetriNetUnfolderBase]: 2936/4622 cut-off events. [2023-08-27 06:40:09,646 INFO L125 PetriNetUnfolderBase]: For 108826/108833 co-relation queries the response was YES. [2023-08-27 06:40:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44572 conditions, 4622 events. 2936/4622 cut-off events. For 108826/108833 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 25903 event pairs, 79 based on Foata normal form. 5/4622 useless extension candidates. Maximal degree in co-relation 44425. Up to 4292 conditions per place. [2023-08-27 06:40:09,702 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1066 selfloop transitions, 115 changer transitions 7/1198 dead transitions. [2023-08-27 06:40:09,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 1198 transitions, 25248 flow [2023-08-27 06:40:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:40:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:40:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2080 transitions. [2023-08-27 06:40:09,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626628075253254 [2023-08-27 06:40:09,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2080 transitions. [2023-08-27 06:40:09,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2080 transitions. [2023-08-27 06:40:09,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:09,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2080 transitions. [2023-08-27 06:40:09,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:09,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:09,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:09,707 INFO L175 Difference]: Start difference. First operand has 365 places, 1163 transitions, 22390 flow. Second operand 8 states and 2080 transitions. [2023-08-27 06:40:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 1198 transitions, 25248 flow [2023-08-27 06:40:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1198 transitions, 24790 flow, removed 200 selfloop flow, removed 3 redundant places. [2023-08-27 06:40:10,531 INFO L231 Difference]: Finished difference. Result has 371 places, 1172 transitions, 22585 flow [2023-08-27 06:40:10,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=22038, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1048, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22585, PETRI_PLACES=371, PETRI_TRANSITIONS=1172} [2023-08-27 06:40:10,532 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 323 predicate places. [2023-08-27 06:40:10,532 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 1172 transitions, 22585 flow [2023-08-27 06:40:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 255.75) internal successors, (5115), 20 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:10,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-08-27 06:40:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:10,734 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:10,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash -395167064, now seen corresponding path program 40 times [2023-08-27 06:40:10,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:10,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458077611] [2023-08-27 06:40:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458077611] [2023-08-27 06:40:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458077611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403599771] [2023-08-27 06:40:11,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:40:11,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:11,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:11,305 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:11,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-27 06:40:11,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:40:11,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:11,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:11,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:12,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:13,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403599771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:13,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:40:13,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369922034] [2023-08-27 06:40:13,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:13,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:40:13,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:13,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:40:13,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:40:13,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:13,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 1172 transitions, 22585 flow. Second operand has 20 states, 20 states have (on average 255.8) internal successors, (5116), 20 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:13,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:13,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:15,264 INFO L124 PetriNetUnfolderBase]: 2931/4611 cut-off events. [2023-08-27 06:40:15,264 INFO L125 PetriNetUnfolderBase]: For 105769/105776 co-relation queries the response was YES. [2023-08-27 06:40:15,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44382 conditions, 4611 events. 2931/4611 cut-off events. For 105769/105776 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25800 event pairs, 79 based on Foata normal form. 5/4611 useless extension candidates. Maximal degree in co-relation 44234. Up to 4195 conditions per place. [2023-08-27 06:40:15,322 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1040 selfloop transitions, 141 changer transitions 9/1200 dead transitions. [2023-08-27 06:40:15,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1200 transitions, 25131 flow [2023-08-27 06:40:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:40:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:40:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2083 transitions. [2023-08-27 06:40:15,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37680897250361794 [2023-08-27 06:40:15,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2083 transitions. [2023-08-27 06:40:15,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2083 transitions. [2023-08-27 06:40:15,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:15,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2083 transitions. [2023-08-27 06:40:15,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.375) internal successors, (2083), 8 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:15,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:15,328 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:15,328 INFO L175 Difference]: Start difference. First operand has 371 places, 1172 transitions, 22585 flow. Second operand 8 states and 2083 transitions. [2023-08-27 06:40:15,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1200 transitions, 25131 flow [2023-08-27 06:40:16,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1200 transitions, 24712 flow, removed 109 selfloop flow, removed 5 redundant places. [2023-08-27 06:40:16,158 INFO L231 Difference]: Finished difference. Result has 374 places, 1172 transitions, 22475 flow [2023-08-27 06:40:16,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=22168, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1031, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22475, PETRI_PLACES=374, PETRI_TRANSITIONS=1172} [2023-08-27 06:40:16,159 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 326 predicate places. [2023-08-27 06:40:16,159 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 1172 transitions, 22475 flow [2023-08-27 06:40:16,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 255.8) internal successors, (5116), 20 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:16,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:16,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:16,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-08-27 06:40:16,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-08-27 06:40:16,360 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:16,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash -851898788, now seen corresponding path program 41 times [2023-08-27 06:40:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:16,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853167718] [2023-08-27 06:40:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853167718] [2023-08-27 06:40:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853167718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961608781] [2023-08-27 06:40:17,097 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:40:17,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:17,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:17,097 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:17,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-27 06:40:17,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:40:17,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:17,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:17,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:17,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:19,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961608781] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:19,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:19,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:40:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070409223] [2023-08-27 06:40:19,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:19,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:40:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:19,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:40:19,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:40:19,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:19,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1172 transitions, 22475 flow. Second operand has 19 states, 19 states have (on average 255.78947368421052) internal successors, (4860), 19 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:19,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:19,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:19,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:21,603 INFO L124 PetriNetUnfolderBase]: 3217/5142 cut-off events. [2023-08-27 06:40:21,604 INFO L125 PetriNetUnfolderBase]: For 131269/131276 co-relation queries the response was YES. [2023-08-27 06:40:21,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49680 conditions, 5142 events. 3217/5142 cut-off events. For 131269/131276 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30193 event pairs, 107 based on Foata normal form. 6/5143 useless extension candidates. Maximal degree in co-relation 49529. Up to 4354 conditions per place. [2023-08-27 06:40:21,673 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1152 selfloop transitions, 196 changer transitions 26/1384 dead transitions. [2023-08-27 06:40:21,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1384 transitions, 29469 flow [2023-08-27 06:40:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:40:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:40:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2869 transitions. [2023-08-27 06:40:21,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774503354821734 [2023-08-27 06:40:21,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2869 transitions. [2023-08-27 06:40:21,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2869 transitions. [2023-08-27 06:40:21,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:21,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2869 transitions. [2023-08-27 06:40:21,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:21,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:21,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:21,680 INFO L175 Difference]: Start difference. First operand has 374 places, 1172 transitions, 22475 flow. Second operand 11 states and 2869 transitions. [2023-08-27 06:40:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1384 transitions, 29469 flow [2023-08-27 06:40:22,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1384 transitions, 29152 flow, removed 44 selfloop flow, removed 6 redundant places. [2023-08-27 06:40:22,721 INFO L231 Difference]: Finished difference. Result has 386 places, 1287 transitions, 25341 flow [2023-08-27 06:40:22,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=22168, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1000, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25341, PETRI_PLACES=386, PETRI_TRANSITIONS=1287} [2023-08-27 06:40:22,722 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 338 predicate places. [2023-08-27 06:40:22,722 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1287 transitions, 25341 flow [2023-08-27 06:40:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 255.78947368421052) internal successors, (4860), 19 states have internal predecessors, (4860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:22,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:22,723 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:22,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:22,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-08-27 06:40:22,930 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:22,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:22,930 INFO L85 PathProgramCache]: Analyzing trace with hash 156073102, now seen corresponding path program 42 times [2023-08-27 06:40:22,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:22,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814065131] [2023-08-27 06:40:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:22,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:23,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814065131] [2023-08-27 06:40:23,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814065131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:23,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002345789] [2023-08-27 06:40:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:40:23,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:23,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:23,782 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:23,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-27 06:40:24,110 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:40:24,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:24,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:24,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:24,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002345789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:25,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:25,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-08-27 06:40:25,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119312644] [2023-08-27 06:40:25,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 06:40:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 06:40:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2023-08-27 06:40:25,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:40:25,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1287 transitions, 25341 flow. Second operand has 22 states, 22 states have (on average 250.8181818181818) internal successors, (5518), 22 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:25,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:25,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:40:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:28,197 INFO L124 PetriNetUnfolderBase]: 3165/5055 cut-off events. [2023-08-27 06:40:28,197 INFO L125 PetriNetUnfolderBase]: For 133988/133995 co-relation queries the response was YES. [2023-08-27 06:40:28,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49766 conditions, 5055 events. 3165/5055 cut-off events. For 133988/133995 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 29542 event pairs, 99 based on Foata normal form. 5/5055 useless extension candidates. Maximal degree in co-relation 49608. Up to 4737 conditions per place. [2023-08-27 06:40:28,264 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1190 selfloop transitions, 80 changer transitions 40/1320 dead transitions. [2023-08-27 06:40:28,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1320 transitions, 28410 flow [2023-08-27 06:40:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:40:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:40:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1787 transitions. [2023-08-27 06:40:28,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944387016745917 [2023-08-27 06:40:28,266 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1787 transitions. [2023-08-27 06:40:28,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1787 transitions. [2023-08-27 06:40:28,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:28,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1787 transitions. [2023-08-27 06:40:28,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.28571428571428) internal successors, (1787), 7 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,269 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 691.0) internal successors, (5528), 8 states have internal predecessors, (5528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:28,269 INFO L175 Difference]: Start difference. First operand has 386 places, 1287 transitions, 25341 flow. Second operand 7 states and 1787 transitions. [2023-08-27 06:40:28,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1320 transitions, 28410 flow [2023-08-27 06:40:29,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1320 transitions, 27720 flow, removed 345 selfloop flow, removed 2 redundant places. [2023-08-27 06:40:29,438 INFO L231 Difference]: Finished difference. Result has 391 places, 1260 transitions, 24357 flow [2023-08-27 06:40:29,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=24655, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24357, PETRI_PLACES=391, PETRI_TRANSITIONS=1260} [2023-08-27 06:40:29,439 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 343 predicate places. [2023-08-27 06:40:29,439 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 1260 transitions, 24357 flow [2023-08-27 06:40:29,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 250.8181818181818) internal successors, (5518), 22 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:29,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:29,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:29,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:29,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:29,641 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:29,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:29,642 INFO L85 PathProgramCache]: Analyzing trace with hash 769426958, now seen corresponding path program 43 times [2023-08-27 06:40:29,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394789836] [2023-08-27 06:40:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:30,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394789836] [2023-08-27 06:40:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394789836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698589524] [2023-08-27 06:40:30,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:40:30,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:30,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:30,165 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:30,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-27 06:40:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:30,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:30,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:31,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698589524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:32,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:40:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455914279] [2023-08-27 06:40:32,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:32,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:40:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:40:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:40:32,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:32,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 1260 transitions, 24357 flow. Second operand has 19 states, 19 states have (on average 255.8421052631579) internal successors, (4861), 19 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:32,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:32,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:32,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:35,031 INFO L124 PetriNetUnfolderBase]: 3188/5110 cut-off events. [2023-08-27 06:40:35,031 INFO L125 PetriNetUnfolderBase]: For 136330/136335 co-relation queries the response was YES. [2023-08-27 06:40:35,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49764 conditions, 5110 events. 3188/5110 cut-off events. For 136330/136335 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 30135 event pairs, 95 based on Foata normal form. 3/5108 useless extension candidates. Maximal degree in co-relation 49603. Up to 4716 conditions per place. [2023-08-27 06:40:35,107 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1189 selfloop transitions, 122 changer transitions 7/1328 dead transitions. [2023-08-27 06:40:35,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1328 transitions, 28062 flow [2023-08-27 06:40:35,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:40:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:40:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2340 transitions. [2023-08-27 06:40:35,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626628075253254 [2023-08-27 06:40:35,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2340 transitions. [2023-08-27 06:40:35,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2340 transitions. [2023-08-27 06:40:35,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:35,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2340 transitions. [2023-08-27 06:40:35,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.0) internal successors, (2340), 9 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,113 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:35,113 INFO L175 Difference]: Start difference. First operand has 391 places, 1260 transitions, 24357 flow. Second operand 9 states and 2340 transitions. [2023-08-27 06:40:35,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1328 transitions, 28062 flow [2023-08-27 06:40:36,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1328 transitions, 27678 flow, removed 149 selfloop flow, removed 3 redundant places. [2023-08-27 06:40:36,330 INFO L231 Difference]: Finished difference. Result has 399 places, 1293 transitions, 25085 flow [2023-08-27 06:40:36,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=23985, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25085, PETRI_PLACES=399, PETRI_TRANSITIONS=1293} [2023-08-27 06:40:36,331 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 351 predicate places. [2023-08-27 06:40:36,331 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 1293 transitions, 25085 flow [2023-08-27 06:40:36,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 255.8421052631579) internal successors, (4861), 19 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:36,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:36,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:36,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:36,539 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:36,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 119799696, now seen corresponding path program 44 times [2023-08-27 06:40:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278979642] [2023-08-27 06:40:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278979642] [2023-08-27 06:40:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278979642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374722545] [2023-08-27 06:40:37,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:40:37,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:37,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:37,077 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:37,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-27 06:40:37,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:40:37,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:37,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:37,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:38,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374722545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:39,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-27 06:40:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053592845] [2023-08-27 06:40:39,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:40:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:40:39,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:40:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:39,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 1293 transitions, 25085 flow. Second operand has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:39,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:39,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:41,557 INFO L124 PetriNetUnfolderBase]: 3245/5207 cut-off events. [2023-08-27 06:40:41,557 INFO L125 PetriNetUnfolderBase]: For 144941/144946 co-relation queries the response was YES. [2023-08-27 06:40:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51001 conditions, 5207 events. 3245/5207 cut-off events. For 144941/144946 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30876 event pairs, 100 based on Foata normal form. 3/5205 useless extension candidates. Maximal degree in co-relation 50836. Up to 4687 conditions per place. [2023-08-27 06:40:41,628 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1194 selfloop transitions, 157 changer transitions 13/1374 dead transitions. [2023-08-27 06:40:41,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1374 transitions, 29158 flow [2023-08-27 06:40:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:40:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:40:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2091 transitions. [2023-08-27 06:40:41,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782561505065123 [2023-08-27 06:40:41,630 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2091 transitions. [2023-08-27 06:40:41,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2091 transitions. [2023-08-27 06:40:41,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:41,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2091 transitions. [2023-08-27 06:40:41,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.375) internal successors, (2091), 8 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,634 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 691.0) internal successors, (6219), 9 states have internal predecessors, (6219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:41,634 INFO L175 Difference]: Start difference. First operand has 399 places, 1293 transitions, 25085 flow. Second operand 8 states and 2091 transitions. [2023-08-27 06:40:41,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1374 transitions, 29158 flow [2023-08-27 06:40:42,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1374 transitions, 28627 flow, removed 186 selfloop flow, removed 5 redundant places. [2023-08-27 06:40:42,817 INFO L231 Difference]: Finished difference. Result has 403 places, 1325 transitions, 25810 flow [2023-08-27 06:40:42,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=24560, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25810, PETRI_PLACES=403, PETRI_TRANSITIONS=1325} [2023-08-27 06:40:42,818 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 355 predicate places. [2023-08-27 06:40:42,818 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 1325 transitions, 25810 flow [2023-08-27 06:40:42,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.0) internal successors, (4352), 17 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:42,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:42,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:42,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:43,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-08-27 06:40:43,019 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:43,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1756112348, now seen corresponding path program 45 times [2023-08-27 06:40:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:43,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187753878] [2023-08-27 06:40:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187753878] [2023-08-27 06:40:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187753878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247305440] [2023-08-27 06:40:43,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:40:43,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:43,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:43,697 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:43,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-27 06:40:44,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:40:44,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:44,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:44,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:44,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247305440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:45,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:45,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-27 06:40:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601841144] [2023-08-27 06:40:45,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:45,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:40:45,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:40:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:40:45,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:40:45,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 1325 transitions, 25810 flow. Second operand has 19 states, 19 states have (on average 251.05263157894737) internal successors, (4770), 19 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:45,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:45,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:40:45,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:48,539 INFO L124 PetriNetUnfolderBase]: 3227/5183 cut-off events. [2023-08-27 06:40:48,540 INFO L125 PetriNetUnfolderBase]: For 142023/142028 co-relation queries the response was YES. [2023-08-27 06:40:48,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50522 conditions, 5183 events. 3227/5183 cut-off events. For 142023/142028 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30770 event pairs, 99 based on Foata normal form. 3/5181 useless extension candidates. Maximal degree in co-relation 50355. Up to 4686 conditions per place. [2023-08-27 06:40:48,621 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1190 selfloop transitions, 155 changer transitions 9/1364 dead transitions. [2023-08-27 06:40:48,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 1364 transitions, 28839 flow [2023-08-27 06:40:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:40:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:40:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2300 transitions. [2023-08-27 06:40:48,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983437851744655 [2023-08-27 06:40:48,624 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2300 transitions. [2023-08-27 06:40:48,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2300 transitions. [2023-08-27 06:40:48,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:48,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2300 transitions. [2023-08-27 06:40:48,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.55555555555554) internal successors, (2300), 9 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,627 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:48,628 INFO L175 Difference]: Start difference. First operand has 403 places, 1325 transitions, 25810 flow. Second operand 9 states and 2300 transitions. [2023-08-27 06:40:48,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 1364 transitions, 28839 flow [2023-08-27 06:40:50,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 1364 transitions, 28331 flow, removed 141 selfloop flow, removed 5 redundant places. [2023-08-27 06:40:50,100 INFO L231 Difference]: Finished difference. Result has 407 places, 1327 transitions, 25725 flow [2023-08-27 06:40:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=25306, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25725, PETRI_PLACES=407, PETRI_TRANSITIONS=1327} [2023-08-27 06:40:50,102 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 359 predicate places. [2023-08-27 06:40:50,102 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 1327 transitions, 25725 flow [2023-08-27 06:40:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 251.05263157894737) internal successors, (4770), 19 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:50,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:50,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:50,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:50,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:50,311 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:50,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:50,311 INFO L85 PathProgramCache]: Analyzing trace with hash -726750296, now seen corresponding path program 46 times [2023-08-27 06:40:50,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:50,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456700013] [2023-08-27 06:40:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:50,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456700013] [2023-08-27 06:40:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456700013] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198494153] [2023-08-27 06:40:50,997 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:40:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:50,998 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:50,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-27 06:40:51,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:40:51,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:51,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:51,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:51,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:53,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:53,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198494153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:53,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:53,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-08-27 06:40:53,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012463631] [2023-08-27 06:40:53,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:53,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:40:53,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:53,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:40:53,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:40:53,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 691 [2023-08-27 06:40:53,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1327 transitions, 25725 flow. Second operand has 20 states, 20 states have (on average 251.0) internal successors, (5020), 20 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:53,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:53,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 691 [2023-08-27 06:40:53,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:40:55,760 INFO L124 PetriNetUnfolderBase]: 3232/5212 cut-off events. [2023-08-27 06:40:55,760 INFO L125 PetriNetUnfolderBase]: For 133850/133855 co-relation queries the response was YES. [2023-08-27 06:40:55,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50422 conditions, 5212 events. 3232/5212 cut-off events. For 133850/133855 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 31141 event pairs, 86 based on Foata normal form. 3/5210 useless extension candidates. Maximal degree in co-relation 50254. Up to 4785 conditions per place. [2023-08-27 06:40:55,835 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1224 selfloop transitions, 146 changer transitions 7/1387 dead transitions. [2023-08-27 06:40:55,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 1387 transitions, 29255 flow [2023-08-27 06:40:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 06:40:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 06:40:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3055 transitions. [2023-08-27 06:40:55,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36842739990352147 [2023-08-27 06:40:55,839 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3055 transitions. [2023-08-27 06:40:55,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3055 transitions. [2023-08-27 06:40:55,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:40:55,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3055 transitions. [2023-08-27 06:40:55,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 254.58333333333334) internal successors, (3055), 12 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:55,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:55,846 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 691.0) internal successors, (8983), 13 states have internal predecessors, (8983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:55,846 INFO L175 Difference]: Start difference. First operand has 407 places, 1327 transitions, 25725 flow. Second operand 12 states and 3055 transitions. [2023-08-27 06:40:55,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 1387 transitions, 29255 flow [2023-08-27 06:40:56,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 1387 transitions, 28934 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-08-27 06:40:56,998 INFO L231 Difference]: Finished difference. Result has 414 places, 1344 transitions, 26213 flow [2023-08-27 06:40:56,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=25412, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=26213, PETRI_PLACES=414, PETRI_TRANSITIONS=1344} [2023-08-27 06:40:56,999 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 366 predicate places. [2023-08-27 06:40:57,000 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 1344 transitions, 26213 flow [2023-08-27 06:40:57,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 251.0) internal successors, (5020), 20 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:57,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:40:57,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:40:57,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-27 06:40:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:57,208 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:40:57,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:40:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1866001854, now seen corresponding path program 47 times [2023-08-27 06:40:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:40:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948254697] [2023-08-27 06:40:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:40:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:40:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:40:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:57,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:40:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948254697] [2023-08-27 06:40:57,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948254697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:40:57,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796765523] [2023-08-27 06:40:57,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:40:57,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:40:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:40:57,765 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:40:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-27 06:40:58,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:40:58,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:40:58,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:40:58,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:40:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:58,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:40:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:40:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796765523] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:40:59,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:40:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-27 06:40:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001912651] [2023-08-27 06:40:59,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:40:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-27 06:40:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:40:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-27 06:40:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2023-08-27 06:40:59,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:40:59,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 1344 transitions, 26213 flow. Second operand has 21 states, 21 states have (on average 255.9047619047619) internal successors, (5374), 21 states have internal predecessors, (5374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:40:59,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:40:59,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:40:59,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:02,345 INFO L124 PetriNetUnfolderBase]: 3236/5222 cut-off events. [2023-08-27 06:41:02,345 INFO L125 PetriNetUnfolderBase]: For 134942/134947 co-relation queries the response was YES. [2023-08-27 06:41:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50622 conditions, 5222 events. 3236/5222 cut-off events. For 134942/134947 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31297 event pairs, 97 based on Foata normal form. 3/5220 useless extension candidates. Maximal degree in co-relation 50452. Up to 4662 conditions per place. [2023-08-27 06:41:02,425 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1209 selfloop transitions, 183 changer transitions 7/1409 dead transitions. [2023-08-27 06:41:02,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 1409 transitions, 30035 flow [2023-08-27 06:41:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 06:41:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 06:41:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2863 transitions. [2023-08-27 06:41:02,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666096566241286 [2023-08-27 06:41:02,427 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2863 transitions. [2023-08-27 06:41:02,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2863 transitions. [2023-08-27 06:41:02,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:02,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2863 transitions. [2023-08-27 06:41:02,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 260.27272727272725) internal successors, (2863), 11 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,432 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 691.0) internal successors, (8292), 12 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:02,432 INFO L175 Difference]: Start difference. First operand has 414 places, 1344 transitions, 26213 flow. Second operand 11 states and 2863 transitions. [2023-08-27 06:41:02,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 1409 transitions, 30035 flow [2023-08-27 06:41:03,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 1409 transitions, 29624 flow, removed 116 selfloop flow, removed 7 redundant places. [2023-08-27 06:41:03,757 INFO L231 Difference]: Finished difference. Result has 419 places, 1356 transitions, 26603 flow [2023-08-27 06:41:03,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=25810, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=26603, PETRI_PLACES=419, PETRI_TRANSITIONS=1356} [2023-08-27 06:41:03,758 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 371 predicate places. [2023-08-27 06:41:03,758 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 1356 transitions, 26603 flow [2023-08-27 06:41:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 255.9047619047619) internal successors, (5374), 21 states have internal predecessors, (5374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:03,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:03,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:03,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-08-27 06:41:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:03,966 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:03,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1297610456, now seen corresponding path program 48 times [2023-08-27 06:41:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:03,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584379778] [2023-08-27 06:41:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:03,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584379778] [2023-08-27 06:41:04,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584379778] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392528456] [2023-08-27 06:41:04,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:41:04,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:04,421 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:04,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-27 06:41:04,796 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:41:04,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:04,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 06:41:04,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:05,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392528456] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:06,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:41:06,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427009616] [2023-08-27 06:41:06,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:06,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:41:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:41:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:41:06,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 691 [2023-08-27 06:41:06,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 1356 transitions, 26603 flow. Second operand has 20 states, 20 states have (on average 255.75) internal successors, (5115), 20 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:06,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:06,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 691 [2023-08-27 06:41:06,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:09,140 INFO L124 PetriNetUnfolderBase]: 3230/5210 cut-off events. [2023-08-27 06:41:09,140 INFO L125 PetriNetUnfolderBase]: For 134895/134900 co-relation queries the response was YES. [2023-08-27 06:41:09,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50624 conditions, 5210 events. 3230/5210 cut-off events. For 134895/134900 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31179 event pairs, 102 based on Foata normal form. 3/5208 useless extension candidates. Maximal degree in co-relation 50453. Up to 4565 conditions per place. [2023-08-27 06:41:09,214 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1202 selfloop transitions, 184 changer transitions 7/1403 dead transitions. [2023-08-27 06:41:09,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1403 transitions, 30139 flow [2023-08-27 06:41:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:41:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:41:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2348 transitions. [2023-08-27 06:41:09,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775526611995498 [2023-08-27 06:41:09,216 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2348 transitions. [2023-08-27 06:41:09,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2348 transitions. [2023-08-27 06:41:09,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:09,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2348 transitions. [2023-08-27 06:41:09,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 260.8888888888889) internal successors, (2348), 9 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:09,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:09,220 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:09,220 INFO L175 Difference]: Start difference. First operand has 419 places, 1356 transitions, 26603 flow. Second operand 9 states and 2348 transitions. [2023-08-27 06:41:09,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 1403 transitions, 30139 flow [2023-08-27 06:41:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1403 transitions, 29564 flow, removed 112 selfloop flow, removed 9 redundant places. [2023-08-27 06:41:10,532 INFO L231 Difference]: Finished difference. Result has 420 places, 1359 transitions, 26677 flow [2023-08-27 06:41:10,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=26034, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26677, PETRI_PLACES=420, PETRI_TRANSITIONS=1359} [2023-08-27 06:41:10,533 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 372 predicate places. [2023-08-27 06:41:10,533 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 1359 transitions, 26677 flow [2023-08-27 06:41:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 255.75) internal successors, (5115), 20 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:10,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:10,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-08-27 06:41:10,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:10,734 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:10,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2025460245, now seen corresponding path program 49 times [2023-08-27 06:41:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:10,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565959124] [2023-08-27 06:41:10,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:10,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:10,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565959124] [2023-08-27 06:41:10,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565959124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:10,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541395916] [2023-08-27 06:41:10,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:41:10,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:10,826 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:10,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-27 06:41:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:11,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:11,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:11,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:11,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541395916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:11,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:11,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-27 06:41:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128297833] [2023-08-27 06:41:11,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:11,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:41:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:41:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:41:11,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:11,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 1359 transitions, 26677 flow. Second operand has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:11,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:11,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:11,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:13,721 INFO L124 PetriNetUnfolderBase]: 3295/5368 cut-off events. [2023-08-27 06:41:13,721 INFO L125 PetriNetUnfolderBase]: For 139317/139317 co-relation queries the response was YES. [2023-08-27 06:41:13,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51464 conditions, 5368 events. 3295/5368 cut-off events. For 139317/139317 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 32735 event pairs, 640 based on Foata normal form. 4/5372 useless extension candidates. Maximal degree in co-relation 51292. Up to 3860 conditions per place. [2023-08-27 06:41:13,805 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 1184 selfloop transitions, 245 changer transitions 15/1444 dead transitions. [2023-08-27 06:41:13,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1444 transitions, 31013 flow [2023-08-27 06:41:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:41:13,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:41:13,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2435 transitions. [2023-08-27 06:41:13,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915420485608619 [2023-08-27 06:41:13,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2435 transitions. [2023-08-27 06:41:13,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2435 transitions. [2023-08-27 06:41:13,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:13,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2435 transitions. [2023-08-27 06:41:13,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 270.55555555555554) internal successors, (2435), 9 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,811 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:13,811 INFO L175 Difference]: Start difference. First operand has 420 places, 1359 transitions, 26677 flow. Second operand 9 states and 2435 transitions. [2023-08-27 06:41:13,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1444 transitions, 31013 flow [2023-08-27 06:41:15,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1444 transitions, 30424 flow, removed 140 selfloop flow, removed 6 redundant places. [2023-08-27 06:41:15,319 INFO L231 Difference]: Finished difference. Result has 425 places, 1358 transitions, 26616 flow [2023-08-27 06:41:15,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=26104, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26616, PETRI_PLACES=425, PETRI_TRANSITIONS=1358} [2023-08-27 06:41:15,320 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 377 predicate places. [2023-08-27 06:41:15,320 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1358 transitions, 26616 flow [2023-08-27 06:41:15,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 266.0) internal successors, (3724), 14 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:15,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:15,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:15,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-08-27 06:41:15,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-08-27 06:41:15,521 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:15,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 205226800, now seen corresponding path program 50 times [2023-08-27 06:41:15,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:15,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151317250] [2023-08-27 06:41:15,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:15,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:15,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:15,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151317250] [2023-08-27 06:41:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151317250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393536413] [2023-08-27 06:41:15,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:15,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:15,619 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:15,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-27 06:41:16,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:41:16,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:16,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:16,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:16,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:16,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393536413] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:16,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:16,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-27 06:41:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982646149] [2023-08-27 06:41:16,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:16,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:41:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:41:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:41:16,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:16,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1358 transitions, 26616 flow. Second operand has 14 states, 14 states have (on average 266.07142857142856) internal successors, (3725), 14 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:16,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:16,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:16,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:18,823 INFO L124 PetriNetUnfolderBase]: 3448/5625 cut-off events. [2023-08-27 06:41:18,824 INFO L125 PetriNetUnfolderBase]: For 146562/146562 co-relation queries the response was YES. [2023-08-27 06:41:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53948 conditions, 5625 events. 3448/5625 cut-off events. For 146562/146562 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34764 event pairs, 149 based on Foata normal form. 16/5641 useless extension candidates. Maximal degree in co-relation 53774. Up to 2173 conditions per place. [2023-08-27 06:41:18,904 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1027 selfloop transitions, 499 changer transitions 0/1526 dead transitions. [2023-08-27 06:41:18,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1526 transitions, 32882 flow [2023-08-27 06:41:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:41:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:41:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3511 transitions. [2023-08-27 06:41:18,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39084938216631415 [2023-08-27 06:41:18,907 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3511 transitions. [2023-08-27 06:41:18,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3511 transitions. [2023-08-27 06:41:18,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:18,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3511 transitions. [2023-08-27 06:41:18,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 270.0769230769231) internal successors, (3511), 13 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:18,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:18,913 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:18,913 INFO L175 Difference]: Start difference. First operand has 425 places, 1358 transitions, 26616 flow. Second operand 13 states and 3511 transitions. [2023-08-27 06:41:18,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1526 transitions, 32882 flow [2023-08-27 06:41:20,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1526 transitions, 32384 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-27 06:41:20,166 INFO L231 Difference]: Finished difference. Result has 433 places, 1423 transitions, 28986 flow [2023-08-27 06:41:20,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=26118, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=28986, PETRI_PLACES=433, PETRI_TRANSITIONS=1423} [2023-08-27 06:41:20,168 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 385 predicate places. [2023-08-27 06:41:20,168 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 1423 transitions, 28986 flow [2023-08-27 06:41:20,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 266.07142857142856) internal successors, (3725), 14 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:20,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:20,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:20,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2023-08-27 06:41:20,375 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:20,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1555331256, now seen corresponding path program 51 times [2023-08-27 06:41:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165444651] [2023-08-27 06:41:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:20,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165444651] [2023-08-27 06:41:20,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165444651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:20,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262197552] [2023-08-27 06:41:20,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:41:20,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:20,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:20,472 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:20,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-27 06:41:20,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:41:20,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:20,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:20,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:21,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:21,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262197552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:21,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:21,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:41:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456316992] [2023-08-27 06:41:21,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:21,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:41:21,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:41:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:41:21,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:21,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 1423 transitions, 28986 flow. Second operand has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:21,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:21,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:21,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:23,877 INFO L124 PetriNetUnfolderBase]: 3559/5814 cut-off events. [2023-08-27 06:41:23,877 INFO L125 PetriNetUnfolderBase]: For 162496/162496 co-relation queries the response was YES. [2023-08-27 06:41:23,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57607 conditions, 5814 events. 3559/5814 cut-off events. For 162496/162496 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 36459 event pairs, 302 based on Foata normal form. 20/5834 useless extension candidates. Maximal degree in co-relation 57430. Up to 2731 conditions per place. [2023-08-27 06:41:23,971 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1065 selfloop transitions, 456 changer transitions 0/1521 dead transitions. [2023-08-27 06:41:23,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 1521 transitions, 33695 flow [2023-08-27 06:41:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:41:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:41:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5111 transitions. [2023-08-27 06:41:23,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38929088277858176 [2023-08-27 06:41:23,974 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5111 transitions. [2023-08-27 06:41:23,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5111 transitions. [2023-08-27 06:41:23,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:23,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5111 transitions. [2023-08-27 06:41:23,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 269.0) internal successors, (5111), 19 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:23,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:23,982 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:23,982 INFO L175 Difference]: Start difference. First operand has 433 places, 1423 transitions, 28986 flow. Second operand 19 states and 5111 transitions. [2023-08-27 06:41:23,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 1521 transitions, 33695 flow [2023-08-27 06:41:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 1521 transitions, 33145 flow, removed 78 selfloop flow, removed 4 redundant places. [2023-08-27 06:41:25,398 INFO L231 Difference]: Finished difference. Result has 455 places, 1466 transitions, 30505 flow [2023-08-27 06:41:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=28458, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=30505, PETRI_PLACES=455, PETRI_TRANSITIONS=1466} [2023-08-27 06:41:25,399 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 407 predicate places. [2023-08-27 06:41:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 1466 transitions, 30505 flow [2023-08-27 06:41:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:25,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:25,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:25,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:25,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2023-08-27 06:41:25,607 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:25,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash 175084704, now seen corresponding path program 52 times [2023-08-27 06:41:25,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:25,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589189628] [2023-08-27 06:41:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:25,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589189628] [2023-08-27 06:41:25,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589189628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:25,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255375226] [2023-08-27 06:41:25,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:41:25,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:25,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:25,702 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:25,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-27 06:41:26,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:41:26,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:26,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:26,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:26,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255375226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:26,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:26,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:41:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854627768] [2023-08-27 06:41:26,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:41:26,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:41:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:41:26,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:26,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1466 transitions, 30505 flow. Second operand has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:26,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:26,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:29,369 INFO L124 PetriNetUnfolderBase]: 3753/6088 cut-off events. [2023-08-27 06:41:29,370 INFO L125 PetriNetUnfolderBase]: For 191718/191718 co-relation queries the response was YES. [2023-08-27 06:41:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63021 conditions, 6088 events. 3753/6088 cut-off events. For 191718/191718 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 38177 event pairs, 356 based on Foata normal form. 16/6104 useless extension candidates. Maximal degree in co-relation 62836. Up to 2516 conditions per place. [2023-08-27 06:41:29,457 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 957 selfloop transitions, 636 changer transitions 4/1597 dead transitions. [2023-08-27 06:41:29,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1597 transitions, 37361 flow [2023-08-27 06:41:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:41:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:41:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5108 transitions. [2023-08-27 06:41:29,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890623809886511 [2023-08-27 06:41:29,460 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5108 transitions. [2023-08-27 06:41:29,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5108 transitions. [2023-08-27 06:41:29,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:29,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5108 transitions. [2023-08-27 06:41:29,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 268.8421052631579) internal successors, (5108), 19 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:29,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:29,468 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:29,468 INFO L175 Difference]: Start difference. First operand has 455 places, 1466 transitions, 30505 flow. Second operand 19 states and 5108 transitions. [2023-08-27 06:41:29,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1597 transitions, 37361 flow [2023-08-27 06:41:31,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 1597 transitions, 36693 flow, removed 128 selfloop flow, removed 4 redundant places. [2023-08-27 06:41:31,035 INFO L231 Difference]: Finished difference. Result has 477 places, 1559 transitions, 34868 flow [2023-08-27 06:41:31,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=29954, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34868, PETRI_PLACES=477, PETRI_TRANSITIONS=1559} [2023-08-27 06:41:31,036 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 429 predicate places. [2023-08-27 06:41:31,036 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1559 transitions, 34868 flow [2023-08-27 06:41:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:31,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:31,036 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:31,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:31,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:31,237 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:31,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:31,237 INFO L85 PathProgramCache]: Analyzing trace with hash -952337075, now seen corresponding path program 53 times [2023-08-27 06:41:31,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:31,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508081490] [2023-08-27 06:41:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508081490] [2023-08-27 06:41:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508081490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145098245] [2023-08-27 06:41:31,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:41:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:31,335 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:31,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-27 06:41:31,744 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:41:31,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:31,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:31,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:31,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145098245] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:31,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:41:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694636524] [2023-08-27 06:41:31,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:41:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:41:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:41:31,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:31,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1559 transitions, 34868 flow. Second operand has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:31,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:31,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:31,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:34,981 INFO L124 PetriNetUnfolderBase]: 3800/6175 cut-off events. [2023-08-27 06:41:34,981 INFO L125 PetriNetUnfolderBase]: For 228595/228595 co-relation queries the response was YES. [2023-08-27 06:41:35,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66525 conditions, 6175 events. 3800/6175 cut-off events. For 228595/228595 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38661 event pairs, 764 based on Foata normal form. 20/6195 useless extension candidates. Maximal degree in co-relation 66332. Up to 4916 conditions per place. [2023-08-27 06:41:35,084 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1327 selfloop transitions, 312 changer transitions 12/1651 dead transitions. [2023-08-27 06:41:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1651 transitions, 40101 flow [2023-08-27 06:41:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:41:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:41:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4039 transitions. [2023-08-27 06:41:35,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896767969126869 [2023-08-27 06:41:35,087 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4039 transitions. [2023-08-27 06:41:35,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4039 transitions. [2023-08-27 06:41:35,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:35,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4039 transitions. [2023-08-27 06:41:35,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 269.26666666666665) internal successors, (4039), 15 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:35,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 691.0) internal successors, (11056), 16 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:35,093 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 691.0) internal successors, (11056), 16 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:35,093 INFO L175 Difference]: Start difference. First operand has 477 places, 1559 transitions, 34868 flow. Second operand 15 states and 4039 transitions. [2023-08-27 06:41:35,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1651 transitions, 40101 flow [2023-08-27 06:41:37,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1651 transitions, 37795 flow, removed 765 selfloop flow, removed 11 redundant places. [2023-08-27 06:41:37,169 INFO L231 Difference]: Finished difference. Result has 484 places, 1576 transitions, 34181 flow [2023-08-27 06:41:37,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=32588, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=34181, PETRI_PLACES=484, PETRI_TRANSITIONS=1576} [2023-08-27 06:41:37,170 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 436 predicate places. [2023-08-27 06:41:37,170 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 1576 transitions, 34181 flow [2023-08-27 06:41:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:37,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:37,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:37,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2023-08-27 06:41:37,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:37,372 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:37,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:37,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1260937399, now seen corresponding path program 54 times [2023-08-27 06:41:37,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:37,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981945034] [2023-08-27 06:41:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:37,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981945034] [2023-08-27 06:41:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981945034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988053546] [2023-08-27 06:41:37,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:41:37,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:37,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:37,467 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:37,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-27 06:41:37,883 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:41:37,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:37,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:37,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:37,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:37,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988053546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:37,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:37,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:41:37,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987621730] [2023-08-27 06:41:37,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:37,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:41:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:41:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:41:37,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:37,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1576 transitions, 34181 flow. Second operand has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:37,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:37,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:37,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:41,268 INFO L124 PetriNetUnfolderBase]: 3999/6418 cut-off events. [2023-08-27 06:41:41,268 INFO L125 PetriNetUnfolderBase]: For 228040/228040 co-relation queries the response was YES. [2023-08-27 06:41:41,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69137 conditions, 6418 events. 3999/6418 cut-off events. For 228040/228040 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 39932 event pairs, 697 based on Foata normal form. 36/6454 useless extension candidates. Maximal degree in co-relation 68942. Up to 4707 conditions per place. [2023-08-27 06:41:41,367 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1214 selfloop transitions, 524 changer transitions 15/1753 dead transitions. [2023-08-27 06:41:41,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1753 transitions, 41710 flow [2023-08-27 06:41:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 06:41:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 06:41:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4577 transitions. [2023-08-27 06:41:41,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389631395249851 [2023-08-27 06:41:41,370 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4577 transitions. [2023-08-27 06:41:41,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4577 transitions. [2023-08-27 06:41:41,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:41,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4577 transitions. [2023-08-27 06:41:41,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 269.2352941176471) internal successors, (4577), 17 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:41,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:41,377 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 691.0) internal successors, (12438), 18 states have internal predecessors, (12438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:41,377 INFO L175 Difference]: Start difference. First operand has 484 places, 1576 transitions, 34181 flow. Second operand 17 states and 4577 transitions. [2023-08-27 06:41:41,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1753 transitions, 41710 flow [2023-08-27 06:41:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1753 transitions, 40585 flow, removed 165 selfloop flow, removed 11 redundant places. [2023-08-27 06:41:43,306 INFO L231 Difference]: Finished difference. Result has 491 places, 1655 transitions, 37123 flow [2023-08-27 06:41:43,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=32744, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=37123, PETRI_PLACES=491, PETRI_TRANSITIONS=1655} [2023-08-27 06:41:43,307 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 443 predicate places. [2023-08-27 06:41:43,307 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 1655 transitions, 37123 flow [2023-08-27 06:41:43,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:43,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:43,308 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:43,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:43,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:43,508 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:43,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash 549694046, now seen corresponding path program 55 times [2023-08-27 06:41:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:43,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969632641] [2023-08-27 06:41:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:43,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:43,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969632641] [2023-08-27 06:41:43,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969632641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464057971] [2023-08-27 06:41:43,602 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:41:43,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:43,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:43,603 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:43,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-08-27 06:41:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:44,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:44,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:44,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:44,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464057971] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:44,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:41:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086749920] [2023-08-27 06:41:44,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:44,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:41:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:41:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:41:44,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:44,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 1655 transitions, 37123 flow. Second operand has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:44,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:44,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:44,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:48,021 INFO L124 PetriNetUnfolderBase]: 4216/6777 cut-off events. [2023-08-27 06:41:48,022 INFO L125 PetriNetUnfolderBase]: For 261812/261812 co-relation queries the response was YES. [2023-08-27 06:41:48,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73716 conditions, 6777 events. 4216/6777 cut-off events. For 261812/261812 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 42443 event pairs, 273 based on Foata normal form. 72/6849 useless extension candidates. Maximal degree in co-relation 73518. Up to 3044 conditions per place. [2023-08-27 06:41:48,140 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1161 selfloop transitions, 620 changer transitions 0/1781 dead transitions. [2023-08-27 06:41:48,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1781 transitions, 42926 flow [2023-08-27 06:41:48,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:41:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:41:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5648 transitions. [2023-08-27 06:41:48,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892219695403487 [2023-08-27 06:41:48,143 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5648 transitions. [2023-08-27 06:41:48,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5648 transitions. [2023-08-27 06:41:48,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:48,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5648 transitions. [2023-08-27 06:41:48,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.95238095238096) internal successors, (5648), 21 states have internal predecessors, (5648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:48,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:48,152 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:48,152 INFO L175 Difference]: Start difference. First operand has 491 places, 1655 transitions, 37123 flow. Second operand 21 states and 5648 transitions. [2023-08-27 06:41:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1781 transitions, 42926 flow [2023-08-27 06:41:50,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 1781 transitions, 41642 flow, removed 551 selfloop flow, removed 7 redundant places. [2023-08-27 06:41:50,757 INFO L231 Difference]: Finished difference. Result has 510 places, 1732 transitions, 39260 flow [2023-08-27 06:41:50,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=35828, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=543, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=39260, PETRI_PLACES=510, PETRI_TRANSITIONS=1732} [2023-08-27 06:41:50,758 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 462 predicate places. [2023-08-27 06:41:50,758 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 1732 transitions, 39260 flow [2023-08-27 06:41:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:50,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:50,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:50,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-08-27 06:41:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:50,960 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:50,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -502053159, now seen corresponding path program 56 times [2023-08-27 06:41:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:50,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261115446] [2023-08-27 06:41:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:50,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:51,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261115446] [2023-08-27 06:41:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261115446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:51,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008973109] [2023-08-27 06:41:51,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:41:51,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:51,064 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:51,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-08-27 06:41:51,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:41:51,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:51,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:51,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:51,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:51,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:51,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008973109] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:51,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:51,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:41:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270603047] [2023-08-27 06:41:51,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:41:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:41:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:41:51,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:51,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1732 transitions, 39260 flow. Second operand has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:51,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:51,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:41:55,735 INFO L124 PetriNetUnfolderBase]: 4458/7093 cut-off events. [2023-08-27 06:41:55,735 INFO L125 PetriNetUnfolderBase]: For 261337/261337 co-relation queries the response was YES. [2023-08-27 06:41:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79242 conditions, 7093 events. 4458/7093 cut-off events. For 261337/261337 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 44113 event pairs, 776 based on Foata normal form. 36/7129 useless extension candidates. Maximal degree in co-relation 79038. Up to 5296 conditions per place. [2023-08-27 06:41:55,855 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1216 selfloop transitions, 710 changer transitions 1/1927 dead transitions. [2023-08-27 06:41:55,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1927 transitions, 47667 flow [2023-08-27 06:41:55,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 06:41:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 06:41:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7511 transitions. [2023-08-27 06:41:55,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388205499276411 [2023-08-27 06:41:55,860 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 7511 transitions. [2023-08-27 06:41:55,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 7511 transitions. [2023-08-27 06:41:55,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:41:55,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 7511 transitions. [2023-08-27 06:41:55,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 268.25) internal successors, (7511), 28 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:55,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 691.0) internal successors, (20039), 29 states have internal predecessors, (20039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:55,875 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 691.0) internal successors, (20039), 29 states have internal predecessors, (20039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:55,875 INFO L175 Difference]: Start difference. First operand has 510 places, 1732 transitions, 39260 flow. Second operand 28 states and 7511 transitions. [2023-08-27 06:41:55,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1927 transitions, 47667 flow [2023-08-27 06:41:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1927 transitions, 47091 flow, removed 151 selfloop flow, removed 12 redundant places. [2023-08-27 06:41:58,159 INFO L231 Difference]: Finished difference. Result has 530 places, 1859 transitions, 44648 flow [2023-08-27 06:41:58,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=38282, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=573, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=44648, PETRI_PLACES=530, PETRI_TRANSITIONS=1859} [2023-08-27 06:41:58,161 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 482 predicate places. [2023-08-27 06:41:58,161 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 1859 transitions, 44648 flow [2023-08-27 06:41:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8666666666667) internal successors, (3988), 15 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:58,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:41:58,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:41:58,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-08-27 06:41:58,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:58,369 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:41:58,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:41:58,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1391869180, now seen corresponding path program 57 times [2023-08-27 06:41:58,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:41:58,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129666704] [2023-08-27 06:41:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:41:58,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:41:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:41:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:58,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:41:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129666704] [2023-08-27 06:41:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129666704] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:41:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730230841] [2023-08-27 06:41:58,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:41:58,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:41:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:41:58,493 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:41:58,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-08-27 06:41:58,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 06:41:58,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:41:58,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:41:58,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:41:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:59,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:41:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:41:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730230841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:41:59,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:41:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:41:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292499104] [2023-08-27 06:41:59,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:41:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:41:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:41:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:41:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:41:59,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:41:59,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1859 transitions, 44648 flow. Second operand has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:41:59,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:41:59,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:41:59,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:03,587 INFO L124 PetriNetUnfolderBase]: 4480/7179 cut-off events. [2023-08-27 06:42:03,587 INFO L125 PetriNetUnfolderBase]: For 271407/271407 co-relation queries the response was YES. [2023-08-27 06:42:03,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82342 conditions, 7179 events. 4480/7179 cut-off events. For 271407/271407 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 45237 event pairs, 247 based on Foata normal form. 60/7239 useless extension candidates. Maximal degree in co-relation 82134. Up to 2630 conditions per place. [2023-08-27 06:42:03,706 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1022 selfloop transitions, 885 changer transitions 0/1907 dead transitions. [2023-08-27 06:42:03,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 1907 transitions, 48909 flow [2023-08-27 06:42:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 06:42:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 06:42:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6451 transitions. [2023-08-27 06:42:03,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3889893873613121 [2023-08-27 06:42:03,710 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6451 transitions. [2023-08-27 06:42:03,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6451 transitions. [2023-08-27 06:42:03,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:03,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6451 transitions. [2023-08-27 06:42:03,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 268.7916666666667) internal successors, (6451), 24 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:03,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 691.0) internal successors, (17275), 25 states have internal predecessors, (17275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:03,721 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 691.0) internal successors, (17275), 25 states have internal predecessors, (17275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:03,721 INFO L175 Difference]: Start difference. First operand has 530 places, 1859 transitions, 44648 flow. Second operand 24 states and 6451 transitions. [2023-08-27 06:42:03,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 1907 transitions, 48909 flow [2023-08-27 06:42:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 1907 transitions, 47055 flow, removed 649 selfloop flow, removed 14 redundant places. [2023-08-27 06:42:06,442 INFO L231 Difference]: Finished difference. Result has 540 places, 1861 transitions, 44718 flow [2023-08-27 06:42:06,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=42189, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=863, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=961, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=44718, PETRI_PLACES=540, PETRI_TRANSITIONS=1861} [2023-08-27 06:42:06,443 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 492 predicate places. [2023-08-27 06:42:06,444 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 1861 transitions, 44718 flow [2023-08-27 06:42:06,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.06666666666666) internal successors, (3991), 15 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:06,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:06,444 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:06,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-08-27 06:42:06,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2023-08-27 06:42:06,649 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:06,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:06,649 INFO L85 PathProgramCache]: Analyzing trace with hash 997031769, now seen corresponding path program 58 times [2023-08-27 06:42:06,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:06,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389042097] [2023-08-27 06:42:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:06,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:06,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:06,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389042097] [2023-08-27 06:42:06,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389042097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:06,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247354803] [2023-08-27 06:42:06,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:42:06,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:06,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:06,745 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:06,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-08-27 06:42:07,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:42:07,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:42:07,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:07,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:07,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:07,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:07,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247354803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:07,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:07,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:42:07,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460167353] [2023-08-27 06:42:07,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:07,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:42:07,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:42:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:42:07,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:07,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 1861 transitions, 44718 flow. Second operand has 15 states, 15 states have (on average 266.0) internal successors, (3990), 15 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:07,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:07,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:07,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:11,509 INFO L124 PetriNetUnfolderBase]: 4459/7160 cut-off events. [2023-08-27 06:42:11,510 INFO L125 PetriNetUnfolderBase]: For 259625/259625 co-relation queries the response was YES. [2023-08-27 06:42:11,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82628 conditions, 7160 events. 4459/7160 cut-off events. For 259625/259625 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 45356 event pairs, 780 based on Foata normal form. 40/7200 useless extension candidates. Maximal degree in co-relation 82418. Up to 5290 conditions per place. [2023-08-27 06:42:11,639 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1250 selfloop transitions, 656 changer transitions 12/1918 dead transitions. [2023-08-27 06:42:11,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 1918 transitions, 49455 flow [2023-08-27 06:42:11,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:42:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:42:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5108 transitions. [2023-08-27 06:42:11,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890623809886511 [2023-08-27 06:42:11,642 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5108 transitions. [2023-08-27 06:42:11,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5108 transitions. [2023-08-27 06:42:11,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:11,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5108 transitions. [2023-08-27 06:42:11,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 268.8421052631579) internal successors, (5108), 19 states have internal predecessors, (5108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:11,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:11,650 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:11,651 INFO L175 Difference]: Start difference. First operand has 540 places, 1861 transitions, 44718 flow. Second operand 19 states and 5108 transitions. [2023-08-27 06:42:11,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 1918 transitions, 49455 flow [2023-08-27 06:42:14,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 1918 transitions, 48059 flow, removed 144 selfloop flow, removed 19 redundant places. [2023-08-27 06:42:14,320 INFO L231 Difference]: Finished difference. Result has 539 places, 1847 transitions, 44413 flow [2023-08-27 06:42:14,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=43221, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=653, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=44413, PETRI_PLACES=539, PETRI_TRANSITIONS=1847} [2023-08-27 06:42:14,322 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 491 predicate places. [2023-08-27 06:42:14,322 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 1847 transitions, 44413 flow [2023-08-27 06:42:14,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.0) internal successors, (3990), 15 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:14,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:14,323 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:14,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-08-27 06:42:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2023-08-27 06:42:14,530 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:14,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1828108506, now seen corresponding path program 59 times [2023-08-27 06:42:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145828318] [2023-08-27 06:42:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145828318] [2023-08-27 06:42:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145828318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487858712] [2023-08-27 06:42:14,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:42:14,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:14,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:14,675 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:14,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-08-27 06:42:15,140 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-27 06:42:15,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:42:15,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:15,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:15,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:15,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487858712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:15,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:15,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:42:15,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022758192] [2023-08-27 06:42:15,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:15,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:42:15,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:15,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:42:15,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:42:15,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:15,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1847 transitions, 44413 flow. Second operand has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:15,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:15,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:15,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:19,586 INFO L124 PetriNetUnfolderBase]: 4661/7444 cut-off events. [2023-08-27 06:42:19,586 INFO L125 PetriNetUnfolderBase]: For 278205/278205 co-relation queries the response was YES. [2023-08-27 06:42:19,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88067 conditions, 7444 events. 4661/7444 cut-off events. For 278205/278205 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 47048 event pairs, 397 based on Foata normal form. 34/7478 useless extension candidates. Maximal degree in co-relation 87856. Up to 2959 conditions per place. [2023-08-27 06:42:19,721 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1025 selfloop transitions, 991 changer transitions 16/2032 dead transitions. [2023-08-27 06:42:19,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 2032 transitions, 54235 flow [2023-08-27 06:42:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:42:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:42:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5638 transitions. [2023-08-27 06:42:19,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38853283715801806 [2023-08-27 06:42:19,724 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5638 transitions. [2023-08-27 06:42:19,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5638 transitions. [2023-08-27 06:42:19,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:19,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5638 transitions. [2023-08-27 06:42:19,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.4761904761905) internal successors, (5638), 21 states have internal predecessors, (5638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:19,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:19,733 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:19,734 INFO L175 Difference]: Start difference. First operand has 539 places, 1847 transitions, 44413 flow. Second operand 21 states and 5638 transitions. [2023-08-27 06:42:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 2032 transitions, 54235 flow [2023-08-27 06:42:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 2032 transitions, 52661 flow, removed 52 selfloop flow, removed 18 redundant places. [2023-08-27 06:42:22,520 INFO L231 Difference]: Finished difference. Result has 547 places, 1978 transitions, 50872 flow [2023-08-27 06:42:22,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=42937, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=853, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=939, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=50872, PETRI_PLACES=547, PETRI_TRANSITIONS=1978} [2023-08-27 06:42:22,522 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 499 predicate places. [2023-08-27 06:42:22,522 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 1978 transitions, 50872 flow [2023-08-27 06:42:22,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:22,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:22,523 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:22,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-08-27 06:42:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2023-08-27 06:42:22,723 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:22,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1510279770, now seen corresponding path program 60 times [2023-08-27 06:42:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:22,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19774602] [2023-08-27 06:42:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:22,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19774602] [2023-08-27 06:42:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19774602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235815974] [2023-08-27 06:42:22,825 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:42:22,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:22,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:22,827 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:22,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-08-27 06:42:23,291 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:42:23,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:42:23,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:23,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:23,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235815974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:23,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-27 06:42:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027028397] [2023-08-27 06:42:23,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:42:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:23,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:42:23,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:42:23,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:23,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1978 transitions, 50872 flow. Second operand has 18 states, 18 states have (on average 266.05555555555554) internal successors, (4789), 18 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:23,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:23,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:23,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:28,810 INFO L124 PetriNetUnfolderBase]: 4920/7903 cut-off events. [2023-08-27 06:42:28,810 INFO L125 PetriNetUnfolderBase]: For 321356/321356 co-relation queries the response was YES. [2023-08-27 06:42:28,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95681 conditions, 7903 events. 4920/7903 cut-off events. For 321356/321356 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 50769 event pairs, 307 based on Foata normal form. 20/7923 useless extension candidates. Maximal degree in co-relation 95464. Up to 4034 conditions per place. [2023-08-27 06:42:28,947 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1483 selfloop transitions, 665 changer transitions 0/2148 dead transitions. [2023-08-27 06:42:28,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 2148 transitions, 58698 flow [2023-08-27 06:42:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 06:42:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 06:42:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 7788 transitions. [2023-08-27 06:42:28,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38864214781176704 [2023-08-27 06:42:28,952 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 7788 transitions. [2023-08-27 06:42:28,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 7788 transitions. [2023-08-27 06:42:28,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:28,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 7788 transitions. [2023-08-27 06:42:28,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 268.55172413793105) internal successors, (7788), 29 states have internal predecessors, (7788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:28,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 691.0) internal successors, (20730), 30 states have internal predecessors, (20730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:28,965 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 691.0) internal successors, (20730), 30 states have internal predecessors, (20730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:28,965 INFO L175 Difference]: Start difference. First operand has 547 places, 1978 transitions, 50872 flow. Second operand 29 states and 7788 transitions. [2023-08-27 06:42:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 2148 transitions, 58698 flow [2023-08-27 06:42:32,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 2148 transitions, 56657 flow, removed 734 selfloop flow, removed 9 redundant places. [2023-08-27 06:42:32,599 INFO L231 Difference]: Finished difference. Result has 569 places, 2084 transitions, 53247 flow [2023-08-27 06:42:32,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=48913, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=564, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=53247, PETRI_PLACES=569, PETRI_TRANSITIONS=2084} [2023-08-27 06:42:32,600 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 521 predicate places. [2023-08-27 06:42:32,600 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 2084 transitions, 53247 flow [2023-08-27 06:42:32,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 266.05555555555554) internal successors, (4789), 18 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:32,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:32,601 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:32,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-08-27 06:42:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2023-08-27 06:42:32,801 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:32,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash -539516832, now seen corresponding path program 61 times [2023-08-27 06:42:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420273524] [2023-08-27 06:42:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420273524] [2023-08-27 06:42:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420273524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767967744] [2023-08-27 06:42:32,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:42:32,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:32,896 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:32,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-08-27 06:42:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:33,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:33,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:33,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767967744] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:33,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-08-27 06:42:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18123291] [2023-08-27 06:42:33,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:33,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:42:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:42:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:42:33,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:33,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 2084 transitions, 53247 flow. Second operand has 15 states, 15 states have (on average 266.1333333333333) internal successors, (3992), 15 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:33,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:33,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:33,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:38,761 INFO L124 PetriNetUnfolderBase]: 5008/8083 cut-off events. [2023-08-27 06:42:38,761 INFO L125 PetriNetUnfolderBase]: For 324733/324733 co-relation queries the response was YES. [2023-08-27 06:42:38,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96332 conditions, 8083 events. 5008/8083 cut-off events. For 324733/324733 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 52508 event pairs, 211 based on Foata normal form. 68/8151 useless extension candidates. Maximal degree in co-relation 96112. Up to 3431 conditions per place. [2023-08-27 06:42:38,924 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1202 selfloop transitions, 978 changer transitions 1/2181 dead transitions. [2023-08-27 06:42:38,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 2181 transitions, 59254 flow [2023-08-27 06:42:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 06:42:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 06:42:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6982 transitions. [2023-08-27 06:42:38,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886229544695536 [2023-08-27 06:42:38,929 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6982 transitions. [2023-08-27 06:42:38,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6982 transitions. [2023-08-27 06:42:38,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:38,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6982 transitions. [2023-08-27 06:42:38,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 268.53846153846155) internal successors, (6982), 26 states have internal predecessors, (6982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:38,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 691.0) internal successors, (18657), 27 states have internal predecessors, (18657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:38,940 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 691.0) internal successors, (18657), 27 states have internal predecessors, (18657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:38,940 INFO L175 Difference]: Start difference. First operand has 569 places, 2084 transitions, 53247 flow. Second operand 26 states and 6982 transitions. [2023-08-27 06:42:38,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 2181 transitions, 59254 flow [2023-08-27 06:42:42,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 2181 transitions, 58627 flow, removed 265 selfloop flow, removed 6 redundant places. [2023-08-27 06:42:42,530 INFO L231 Difference]: Finished difference. Result has 590 places, 2134 transitions, 56116 flow [2023-08-27 06:42:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=52179, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2070, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=915, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=56116, PETRI_PLACES=590, PETRI_TRANSITIONS=2134} [2023-08-27 06:42:42,532 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 542 predicate places. [2023-08-27 06:42:42,532 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 2134 transitions, 56116 flow [2023-08-27 06:42:42,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.1333333333333) internal successors, (3992), 15 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:42,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:42,533 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:42,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2023-08-27 06:42:42,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:42,734 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:42,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:42,734 INFO L85 PathProgramCache]: Analyzing trace with hash 837888104, now seen corresponding path program 62 times [2023-08-27 06:42:42,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:42,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374636795] [2023-08-27 06:42:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:42,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:42,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374636795] [2023-08-27 06:42:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374636795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:42,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283991060] [2023-08-27 06:42:42,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:42:42,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:42,828 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:42,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-08-27 06:42:43,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:42:43,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:42:43,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:43,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:43,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283991060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:43,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:43,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 15 [2023-08-27 06:42:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087409002] [2023-08-27 06:42:43,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:43,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:42:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:42:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:42:43,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:43,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 2134 transitions, 56116 flow. Second operand has 15 states, 15 states have (on average 266.1333333333333) internal successors, (3992), 15 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:43,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:43,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:43,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:42:48,998 INFO L124 PetriNetUnfolderBase]: 5096/8253 cut-off events. [2023-08-27 06:42:48,998 INFO L125 PetriNetUnfolderBase]: For 351697/351697 co-relation queries the response was YES. [2023-08-27 06:42:49,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101457 conditions, 8253 events. 5096/8253 cut-off events. For 351697/351697 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 54149 event pairs, 265 based on Foata normal form. 84/8337 useless extension candidates. Maximal degree in co-relation 101234. Up to 2629 conditions per place. [2023-08-27 06:42:49,164 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 975 selfloop transitions, 1230 changer transitions 0/2205 dead transitions. [2023-08-27 06:42:49,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 2205 transitions, 62216 flow [2023-08-27 06:42:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 06:42:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 06:42:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6715 transitions. [2023-08-27 06:42:49,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388712011577424 [2023-08-27 06:42:49,431 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6715 transitions. [2023-08-27 06:42:49,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6715 transitions. [2023-08-27 06:42:49,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:42:49,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6715 transitions. [2023-08-27 06:42:49,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 268.6) internal successors, (6715), 25 states have internal predecessors, (6715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:49,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 691.0) internal successors, (17966), 26 states have internal predecessors, (17966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:49,441 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 691.0) internal successors, (17966), 26 states have internal predecessors, (17966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:49,441 INFO L175 Difference]: Start difference. First operand has 590 places, 2134 transitions, 56116 flow. Second operand 25 states and 6715 transitions. [2023-08-27 06:42:49,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 2205 transitions, 62216 flow [2023-08-27 06:42:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 2205 transitions, 60996 flow, removed 251 selfloop flow, removed 14 redundant places. [2023-08-27 06:42:53,040 INFO L231 Difference]: Finished difference. Result has 603 places, 2158 transitions, 59800 flow [2023-08-27 06:42:53,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=53677, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2096, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=59800, PETRI_PLACES=603, PETRI_TRANSITIONS=2158} [2023-08-27 06:42:53,042 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 555 predicate places. [2023-08-27 06:42:53,042 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 2158 transitions, 59800 flow [2023-08-27 06:42:53,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 266.1333333333333) internal successors, (3992), 15 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:53,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:42:53,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:42:53,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-08-27 06:42:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:53,243 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:42:53,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:42:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash -408665548, now seen corresponding path program 63 times [2023-08-27 06:42:53,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:42:53,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329862660] [2023-08-27 06:42:53,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:42:53,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:42:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:42:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:42:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329862660] [2023-08-27 06:42:53,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329862660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:42:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044465268] [2023-08-27 06:42:53,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:42:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:42:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:42:53,337 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:42:53,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-08-27 06:42:53,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:42:53,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:42:53,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:42:53,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:42:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:42:53,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:42:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:42:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044465268] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:42:54,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:42:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-08-27 06:42:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234183250] [2023-08-27 06:42:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:42:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:42:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:42:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:42:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:42:54,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:42:54,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 2158 transitions, 59800 flow. Second operand has 18 states, 18 states have (on average 265.6666666666667) internal successors, (4782), 18 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:42:54,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:42:54,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:42:54,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:00,465 INFO L124 PetriNetUnfolderBase]: 5321/8588 cut-off events. [2023-08-27 06:43:00,465 INFO L125 PetriNetUnfolderBase]: For 405313/405313 co-relation queries the response was YES. [2023-08-27 06:43:00,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110621 conditions, 8588 events. 5321/8588 cut-off events. For 405313/405313 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 56816 event pairs, 499 based on Foata normal form. 20/8608 useless extension candidates. Maximal degree in co-relation 110398. Up to 3641 conditions per place. [2023-08-27 06:43:00,640 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1102 selfloop transitions, 1200 changer transitions 11/2313 dead transitions. [2023-08-27 06:43:00,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 2313 transitions, 69341 flow [2023-08-27 06:43:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 06:43:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 06:43:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5904 transitions. [2023-08-27 06:43:00,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38836995132219443 [2023-08-27 06:43:00,644 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5904 transitions. [2023-08-27 06:43:00,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5904 transitions. [2023-08-27 06:43:00,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:00,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5904 transitions. [2023-08-27 06:43:00,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 268.3636363636364) internal successors, (5904), 22 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:00,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 691.0) internal successors, (15893), 23 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:00,656 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 691.0) internal successors, (15893), 23 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:00,656 INFO L175 Difference]: Start difference. First operand has 603 places, 2158 transitions, 59800 flow. Second operand 22 states and 5904 transitions. [2023-08-27 06:43:00,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 2313 transitions, 69341 flow [2023-08-27 06:43:05,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 2313 transitions, 68046 flow, removed 383 selfloop flow, removed 11 redundant places. [2023-08-27 06:43:05,427 INFO L231 Difference]: Finished difference. Result has 621 places, 2263 transitions, 66528 flow [2023-08-27 06:43:05,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=58550, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1014, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=66528, PETRI_PLACES=621, PETRI_TRANSITIONS=2263} [2023-08-27 06:43:05,429 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 573 predicate places. [2023-08-27 06:43:05,429 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 2263 transitions, 66528 flow [2023-08-27 06:43:05,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 265.6666666666667) internal successors, (4782), 18 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:05,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:05,430 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:43:05,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-08-27 06:43:05,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:05,633 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:43:05,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1531640672, now seen corresponding path program 64 times [2023-08-27 06:43:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:05,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829542566] [2023-08-27 06:43:05,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829542566] [2023-08-27 06:43:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829542566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148699681] [2023-08-27 06:43:05,732 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:43:05,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:05,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:05,733 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:43:05,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-08-27 06:43:06,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:43:06,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:06,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:43:06,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:06,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148699681] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:06,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:06,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-27 06:43:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545939752] [2023-08-27 06:43:06,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:06,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:43:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:43:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:43:06,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:43:06,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 2263 transitions, 66528 flow. Second operand has 20 states, 20 states have (on average 265.55) internal successors, (5311), 20 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:06,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:06,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:43:06,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:13,281 INFO L124 PetriNetUnfolderBase]: 5511/8862 cut-off events. [2023-08-27 06:43:13,281 INFO L125 PetriNetUnfolderBase]: For 458524/458524 co-relation queries the response was YES. [2023-08-27 06:43:13,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118901 conditions, 8862 events. 5511/8862 cut-off events. For 458524/458524 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 58599 event pairs, 503 based on Foata normal form. 10/8872 useless extension candidates. Maximal degree in co-relation 118670. Up to 3701 conditions per place. [2023-08-27 06:43:13,549 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1169 selfloop transitions, 1226 changer transitions 11/2406 dead transitions. [2023-08-27 06:43:13,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 2406 transitions, 76096 flow [2023-08-27 06:43:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:43:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:43:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6167 transitions. [2023-08-27 06:43:13,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388032467123891 [2023-08-27 06:43:13,553 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6167 transitions. [2023-08-27 06:43:13,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6167 transitions. [2023-08-27 06:43:13,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:13,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6167 transitions. [2023-08-27 06:43:13,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 268.1304347826087) internal successors, (6167), 23 states have internal predecessors, (6167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:13,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:13,563 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:13,563 INFO L175 Difference]: Start difference. First operand has 621 places, 2263 transitions, 66528 flow. Second operand 23 states and 6167 transitions. [2023-08-27 06:43:13,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 2406 transitions, 76096 flow [2023-08-27 06:43:19,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 2406 transitions, 72739 flow, removed 1246 selfloop flow, removed 11 redundant places. [2023-08-27 06:43:19,769 INFO L231 Difference]: Finished difference. Result has 637 places, 2356 transitions, 70917 flow [2023-08-27 06:43:19,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=64095, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1066, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=70917, PETRI_PLACES=637, PETRI_TRANSITIONS=2356} [2023-08-27 06:43:19,771 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 589 predicate places. [2023-08-27 06:43:19,772 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 2356 transitions, 70917 flow [2023-08-27 06:43:19,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 265.55) internal successors, (5311), 20 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:19,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:19,773 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:43:19,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2023-08-27 06:43:19,980 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:43:19,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 54684318, now seen corresponding path program 65 times [2023-08-27 06:43:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133531609] [2023-08-27 06:43:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:20,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133531609] [2023-08-27 06:43:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133531609] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074319046] [2023-08-27 06:43:20,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:43:20,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:20,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:20,090 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:43:20,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-08-27 06:43:20,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 06:43:20,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:20,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:43:20,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:20,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:20,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074319046] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:20,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:20,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-08-27 06:43:20,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338629579] [2023-08-27 06:43:20,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:43:20,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:43:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:43:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:43:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 2356 transitions, 70917 flow. Second operand has 17 states, 17 states have (on average 265.94117647058823) internal successors, (4521), 17 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:43:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:28,808 INFO L124 PetriNetUnfolderBase]: 6407/10284 cut-off events. [2023-08-27 06:43:28,809 INFO L125 PetriNetUnfolderBase]: For 518617/518617 co-relation queries the response was YES. [2023-08-27 06:43:28,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140307 conditions, 10284 events. 6407/10284 cut-off events. For 518617/518617 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 69334 event pairs, 273 based on Foata normal form. 34/10318 useless extension candidates. Maximal degree in co-relation 140070. Up to 3501 conditions per place. [2023-08-27 06:43:29,017 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1226 selfloop transitions, 1564 changer transitions 0/2790 dead transitions. [2023-08-27 06:43:29,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 2790 transitions, 90022 flow [2023-08-27 06:43:29,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 06:43:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 06:43:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 7251 transitions. [2023-08-27 06:43:29,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38864769255507314 [2023-08-27 06:43:29,022 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 7251 transitions. [2023-08-27 06:43:29,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 7251 transitions. [2023-08-27 06:43:29,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:29,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 7251 transitions. [2023-08-27 06:43:29,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 268.55555555555554) internal successors, (7251), 27 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:29,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 691.0) internal successors, (19348), 28 states have internal predecessors, (19348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:29,033 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 691.0) internal successors, (19348), 28 states have internal predecessors, (19348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:29,033 INFO L175 Difference]: Start difference. First operand has 637 places, 2356 transitions, 70917 flow. Second operand 27 states and 7251 transitions. [2023-08-27 06:43:29,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 2790 transitions, 90022 flow [2023-08-27 06:43:36,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 2790 transitions, 88563 flow, removed 253 selfloop flow, removed 15 redundant places. [2023-08-27 06:43:36,215 INFO L231 Difference]: Finished difference. Result has 652 places, 2745 transitions, 87547 flow [2023-08-27 06:43:36,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=69480, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1035, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=87547, PETRI_PLACES=652, PETRI_TRANSITIONS=2745} [2023-08-27 06:43:36,217 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 604 predicate places. [2023-08-27 06:43:36,217 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 2745 transitions, 87547 flow [2023-08-27 06:43:36,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 265.94117647058823) internal successors, (4521), 17 states have internal predecessors, (4521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:36,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:36,218 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:43:36,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:36,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:36,418 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:43:36,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash -925461324, now seen corresponding path program 66 times [2023-08-27 06:43:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030728639] [2023-08-27 06:43:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:36,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030728639] [2023-08-27 06:43:36,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030728639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:36,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610877936] [2023-08-27 06:43:36,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:43:36,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:36,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:36,518 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:43:36,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-08-27 06:43:37,031 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:43:37,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:37,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:43:37,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:37,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:37,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610877936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:37,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-27 06:43:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229544455] [2023-08-27 06:43:37,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:43:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:43:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:43:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:43:37,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 2745 transitions, 87547 flow. Second operand has 17 states, 17 states have (on average 265.7647058823529) internal successors, (4518), 17 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:37,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:37,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:43:37,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:47,185 INFO L124 PetriNetUnfolderBase]: 6773/10812 cut-off events. [2023-08-27 06:43:47,185 INFO L125 PetriNetUnfolderBase]: For 609785/609785 co-relation queries the response was YES. [2023-08-27 06:43:47,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155410 conditions, 10812 events. 6773/10812 cut-off events. For 609785/609785 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 73042 event pairs, 355 based on Foata normal form. 36/10848 useless extension candidates. Maximal degree in co-relation 155168. Up to 3657 conditions per place. [2023-08-27 06:43:47,408 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1017 selfloop transitions, 1943 changer transitions 0/2960 dead transitions. [2023-08-27 06:43:47,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 2960 transitions, 100881 flow [2023-08-27 06:43:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-27 06:43:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-27 06:43:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6984 transitions. [2023-08-27 06:43:47,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38873427585439163 [2023-08-27 06:43:47,412 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6984 transitions. [2023-08-27 06:43:47,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6984 transitions. [2023-08-27 06:43:47,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:47,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6984 transitions. [2023-08-27 06:43:47,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 268.61538461538464) internal successors, (6984), 26 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 691.0) internal successors, (18657), 27 states have internal predecessors, (18657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,423 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 691.0) internal successors, (18657), 27 states have internal predecessors, (18657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,423 INFO L175 Difference]: Start difference. First operand has 652 places, 2745 transitions, 87547 flow. Second operand 26 states and 6984 transitions. [2023-08-27 06:43:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 2960 transitions, 100881 flow [2023-08-27 06:43:56,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 2960 transitions, 99530 flow, removed 451 selfloop flow, removed 10 redundant places. [2023-08-27 06:43:56,310 INFO L231 Difference]: Finished difference. Result has 672 places, 2917 transitions, 99254 flow [2023-08-27 06:43:56,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=86100, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=99254, PETRI_PLACES=672, PETRI_TRANSITIONS=2917} [2023-08-27 06:43:56,311 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 624 predicate places. [2023-08-27 06:43:56,311 INFO L495 AbstractCegarLoop]: Abstraction has has 672 places, 2917 transitions, 99254 flow [2023-08-27 06:43:56,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 265.7647058823529) internal successors, (4518), 17 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:56,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:56,312 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:43:56,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:56,512 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:43:56,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -204946672, now seen corresponding path program 67 times [2023-08-27 06:43:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965668186] [2023-08-27 06:43:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965668186] [2023-08-27 06:43:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965668186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220632144] [2023-08-27 06:43:56,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:43:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:56,616 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:43:56,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-08-27 06:43:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:57,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:43:57,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:57,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:57,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220632144] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:57,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:57,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-27 06:43:57,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211820645] [2023-08-27 06:43:57,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:43:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:43:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:43:57,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:43:57,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 672 places, 2917 transitions, 99254 flow. Second operand has 20 states, 20 states have (on average 265.8) internal successors, (5316), 20 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:57,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:57,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:43:57,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:09,248 INFO L124 PetriNetUnfolderBase]: 7629/12310 cut-off events. [2023-08-27 06:44:09,248 INFO L125 PetriNetUnfolderBase]: For 748316/748316 co-relation queries the response was YES. [2023-08-27 06:44:09,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186033 conditions, 12310 events. 7629/12310 cut-off events. For 748316/748316 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 86322 event pairs, 399 based on Foata normal form. 42/12352 useless extension candidates. Maximal degree in co-relation 185784. Up to 5243 conditions per place. [2023-08-27 06:44:09,519 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 1924 selfloop transitions, 1406 changer transitions 0/3330 dead transitions. [2023-08-27 06:44:09,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 3330 transitions, 119859 flow [2023-08-27 06:44:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 06:44:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 06:44:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 9662 transitions. [2023-08-27 06:44:09,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38840649622125745 [2023-08-27 06:44:09,524 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 9662 transitions. [2023-08-27 06:44:09,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 9662 transitions. [2023-08-27 06:44:09,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:09,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 9662 transitions. [2023-08-27 06:44:09,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 268.3888888888889) internal successors, (9662), 36 states have internal predecessors, (9662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:09,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 691.0) internal successors, (25567), 37 states have internal predecessors, (25567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:09,539 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 691.0) internal successors, (25567), 37 states have internal predecessors, (25567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:09,539 INFO L175 Difference]: Start difference. First operand has 672 places, 2917 transitions, 99254 flow. Second operand 36 states and 9662 transitions. [2023-08-27 06:44:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 3330 transitions, 119859 flow [2023-08-27 06:44:23,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 3330 transitions, 117421 flow, removed 739 selfloop flow, removed 14 redundant places. [2023-08-27 06:44:23,301 INFO L231 Difference]: Finished difference. Result has 704 places, 3266 transitions, 114652 flow [2023-08-27 06:44:23,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=96645, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1743, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=114652, PETRI_PLACES=704, PETRI_TRANSITIONS=3266} [2023-08-27 06:44:23,303 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 656 predicate places. [2023-08-27 06:44:23,303 INFO L495 AbstractCegarLoop]: Abstraction has has 704 places, 3266 transitions, 114652 flow [2023-08-27 06:44:23,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 265.8) internal successors, (5316), 20 states have internal predecessors, (5316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:23,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:23,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:44:23,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:23,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2023-08-27 06:44:23,505 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:44:23,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:23,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1522736668, now seen corresponding path program 68 times [2023-08-27 06:44:23,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:23,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509431717] [2023-08-27 06:44:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:23,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:23,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509431717] [2023-08-27 06:44:23,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509431717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:23,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733213295] [2023-08-27 06:44:23,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:44:23,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:23,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:23,609 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:23,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-08-27 06:44:24,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:44:24,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:24,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:44:24,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:24,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:24,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733213295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:44:24,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:44:24,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-27 06:44:24,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677242421] [2023-08-27 06:44:24,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:44:24,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:44:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:44:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:44:24,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:44:24,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 704 places, 3266 transitions, 114652 flow. Second operand has 14 states, 14 states have (on average 265.92857142857144) internal successors, (3723), 14 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:24,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:24,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:44:24,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:37,731 INFO L124 PetriNetUnfolderBase]: 7646/12365 cut-off events. [2023-08-27 06:44:37,731 INFO L125 PetriNetUnfolderBase]: For 770507/770507 co-relation queries the response was YES. [2023-08-27 06:44:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188802 conditions, 12365 events. 7646/12365 cut-off events. For 770507/770507 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 86707 event pairs, 1204 based on Foata normal form. 2/12367 useless extension candidates. Maximal degree in co-relation 188542. Up to 9210 conditions per place. [2023-08-27 06:44:38,032 INFO L140 encePairwiseOnDemand]: 686/691 looper letters, 2697 selfloop transitions, 637 changer transitions 7/3341 dead transitions. [2023-08-27 06:44:38,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 3341 transitions, 123742 flow [2023-08-27 06:44:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:44:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:44:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2427 transitions. [2023-08-27 06:44:38,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39025566811384466 [2023-08-27 06:44:38,034 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2427 transitions. [2023-08-27 06:44:38,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2427 transitions. [2023-08-27 06:44:38,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:38,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2427 transitions. [2023-08-27 06:44:38,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 269.6666666666667) internal successors, (2427), 9 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:38,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:38,038 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 691.0) internal successors, (6910), 10 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:38,038 INFO L175 Difference]: Start difference. First operand has 704 places, 3266 transitions, 114652 flow. Second operand 9 states and 2427 transitions. [2023-08-27 06:44:38,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 3341 transitions, 123742 flow [2023-08-27 06:44:53,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 3341 transitions, 122794 flow, removed 388 selfloop flow, removed 13 redundant places. [2023-08-27 06:44:53,793 INFO L231 Difference]: Finished difference. Result has 703 places, 3265 transitions, 115140 flow [2023-08-27 06:44:53,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=113855, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=115140, PETRI_PLACES=703, PETRI_TRANSITIONS=3265} [2023-08-27 06:44:53,795 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 655 predicate places. [2023-08-27 06:44:53,795 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 3265 transitions, 115140 flow [2023-08-27 06:44:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 265.92857142857144) internal successors, (3723), 14 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:53,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:53,796 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:44:53,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:53,996 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:44:53,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash 716359098, now seen corresponding path program 69 times [2023-08-27 06:44:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:53,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233217066] [2023-08-27 06:44:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233217066] [2023-08-27 06:44:54,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233217066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548504985] [2023-08-27 06:44:54,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:44:54,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:54,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:54,092 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:54,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-08-27 06:44:54,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 06:44:54,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:54,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:44:54,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:54,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548504985] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:44:54,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:44:54,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:44:54,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124986021] [2023-08-27 06:44:54,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:44:54,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:44:54,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:54,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:44:54,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:44:54,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:44:54,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 3265 transitions, 115140 flow. Second operand has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:54,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:54,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:44:54,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:08,132 INFO L124 PetriNetUnfolderBase]: 7646/12365 cut-off events. [2023-08-27 06:45:08,132 INFO L125 PetriNetUnfolderBase]: For 777614/777614 co-relation queries the response was YES. [2023-08-27 06:45:08,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188863 conditions, 12365 events. 7646/12365 cut-off events. For 777614/777614 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 86713 event pairs, 1210 based on Foata normal form. 8/12373 useless extension candidates. Maximal degree in co-relation 188612. Up to 9262 conditions per place. [2023-08-27 06:45:08,414 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2606 selfloop transitions, 731 changer transitions 10/3347 dead transitions. [2023-08-27 06:45:08,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 714 places, 3347 transitions, 124704 flow [2023-08-27 06:45:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:45:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:45:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4031 transitions. [2023-08-27 06:45:08,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3889049686444766 [2023-08-27 06:45:08,417 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4031 transitions. [2023-08-27 06:45:08,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4031 transitions. [2023-08-27 06:45:08,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:08,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4031 transitions. [2023-08-27 06:45:08,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 268.73333333333335) internal successors, (4031), 15 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:08,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 691.0) internal successors, (11056), 16 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:08,423 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 691.0) internal successors, (11056), 16 states have internal predecessors, (11056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:08,423 INFO L175 Difference]: Start difference. First operand has 703 places, 3265 transitions, 115140 flow. Second operand 15 states and 4031 transitions. [2023-08-27 06:45:08,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 714 places, 3347 transitions, 124704 flow [2023-08-27 06:45:24,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 3347 transitions, 124021 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 06:45:24,151 INFO L231 Difference]: Finished difference. Result has 712 places, 3294 transitions, 118460 flow [2023-08-27 06:45:24,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=114433, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=118460, PETRI_PLACES=712, PETRI_TRANSITIONS=3294} [2023-08-27 06:45:24,153 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 664 predicate places. [2023-08-27 06:45:24,153 INFO L495 AbstractCegarLoop]: Abstraction has has 712 places, 3294 transitions, 118460 flow [2023-08-27 06:45:24,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:24,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:24,154 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:45:24,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-08-27 06:45:24,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:45:24,354 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:45:24,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 798289235, now seen corresponding path program 70 times [2023-08-27 06:45:24,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:24,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557369134] [2023-08-27 06:45:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:24,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:24,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557369134] [2023-08-27 06:45:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557369134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:45:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888665767] [2023-08-27 06:45:24,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:45:24,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:45:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:45:24,455 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:45:24,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-08-27 06:45:24,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:45:24,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:45:24,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:45:24,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:45:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:25,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:45:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:25,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888665767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:45:25,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:45:25,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-27 06:45:25,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910770675] [2023-08-27 06:45:25,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:45:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:45:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:45:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:45:25,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:45:25,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 3294 transitions, 118460 flow. Second operand has 14 states, 14 states have (on average 265.85714285714283) internal successors, (3722), 14 states have internal predecessors, (3722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:25,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:25,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:45:25,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:40,433 INFO L124 PetriNetUnfolderBase]: 7760/12547 cut-off events. [2023-08-27 06:45:40,433 INFO L125 PetriNetUnfolderBase]: For 801346/801346 co-relation queries the response was YES. [2023-08-27 06:45:40,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193108 conditions, 12547 events. 7760/12547 cut-off events. For 801346/801346 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 88237 event pairs, 79 based on Foata normal form. 14/12561 useless extension candidates. Maximal degree in co-relation 192856. Up to 7613 conditions per place. [2023-08-27 06:45:40,722 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2382 selfloop transitions, 1042 changer transitions 0/3424 dead transitions. [2023-08-27 06:45:40,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 3424 transitions, 128270 flow [2023-08-27 06:45:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 06:45:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 06:45:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3503 transitions. [2023-08-27 06:45:40,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995881108760994 [2023-08-27 06:45:40,725 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3503 transitions. [2023-08-27 06:45:40,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3503 transitions. [2023-08-27 06:45:40,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:40,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3503 transitions. [2023-08-27 06:45:40,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 269.46153846153845) internal successors, (3503), 13 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:40,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:40,730 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 691.0) internal successors, (9674), 14 states have internal predecessors, (9674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:40,730 INFO L175 Difference]: Start difference. First operand has 712 places, 3294 transitions, 118460 flow. Second operand 13 states and 3503 transitions. [2023-08-27 06:45:40,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 3424 transitions, 128270 flow [2023-08-27 06:45:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 3424 transitions, 126368 flow, removed 228 selfloop flow, removed 9 redundant places. [2023-08-27 06:45:56,635 INFO L231 Difference]: Finished difference. Result has 720 places, 3358 transitions, 120406 flow [2023-08-27 06:45:56,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=116558, PETRI_DIFFERENCE_MINUEND_PLACES=702, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=978, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=120406, PETRI_PLACES=720, PETRI_TRANSITIONS=3358} [2023-08-27 06:45:56,637 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 672 predicate places. [2023-08-27 06:45:56,637 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 3358 transitions, 120406 flow [2023-08-27 06:45:56,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 265.85714285714283) internal successors, (3722), 14 states have internal predecessors, (3722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:56,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:56,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:45:56,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2023-08-27 06:45:56,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:45:56,838 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:45:56,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash -228621947, now seen corresponding path program 71 times [2023-08-27 06:45:56,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:56,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466143136] [2023-08-27 06:45:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466143136] [2023-08-27 06:45:56,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466143136] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:45:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635780536] [2023-08-27 06:45:56,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:45:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:45:56,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:45:56,990 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:45:56,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-08-27 06:45:57,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:45:57,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:45:57,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:45:57,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:45:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:57,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:45:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:45:57,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635780536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:45:57,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:45:57,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-08-27 06:45:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141413419] [2023-08-27 06:45:57,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:45:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:45:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:57,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:45:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:45:57,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:45:57,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 3358 transitions, 120406 flow. Second operand has 18 states, 18 states have (on average 265.77777777777777) internal successors, (4784), 18 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:57,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:57,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:45:57,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:13,367 INFO L124 PetriNetUnfolderBase]: 8077/13024 cut-off events. [2023-08-27 06:46:13,368 INFO L125 PetriNetUnfolderBase]: For 912793/912793 co-relation queries the response was YES. [2023-08-27 06:46:13,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204842 conditions, 13024 events. 8077/13024 cut-off events. For 912793/912793 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 91855 event pairs, 415 based on Foata normal form. 56/13080 useless extension candidates. Maximal degree in co-relation 204584. Up to 9317 conditions per place. [2023-08-27 06:46:13,678 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2659 selfloop transitions, 901 changer transitions 13/3573 dead transitions. [2023-08-27 06:46:13,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 3573 transitions, 134727 flow [2023-08-27 06:46:13,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 06:46:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 06:46:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5917 transitions. [2023-08-27 06:46:13,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892251019602684 [2023-08-27 06:46:13,682 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5917 transitions. [2023-08-27 06:46:13,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5917 transitions. [2023-08-27 06:46:13,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:13,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5917 transitions. [2023-08-27 06:46:13,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 268.95454545454544) internal successors, (5917), 22 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:13,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 691.0) internal successors, (15893), 23 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:13,691 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 691.0) internal successors, (15893), 23 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:13,691 INFO L175 Difference]: Start difference. First operand has 720 places, 3358 transitions, 120406 flow. Second operand 22 states and 5917 transitions. [2023-08-27 06:46:13,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 3573 transitions, 134727 flow [2023-08-27 06:46:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 3573 transitions, 132873 flow, removed 216 selfloop flow, removed 5 redundant places. [2023-08-27 06:46:30,603 INFO L231 Difference]: Finished difference. Result has 742 places, 3518 transitions, 127570 flow [2023-08-27 06:46:30,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=118773, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=127570, PETRI_PLACES=742, PETRI_TRANSITIONS=3518} [2023-08-27 06:46:30,605 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 694 predicate places. [2023-08-27 06:46:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 742 places, 3518 transitions, 127570 flow [2023-08-27 06:46:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 265.77777777777777) internal successors, (4784), 18 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:30,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:46:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-08-27 06:46:30,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2023-08-27 06:46:30,806 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:46:30,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:30,807 INFO L85 PathProgramCache]: Analyzing trace with hash -830162593, now seen corresponding path program 72 times [2023-08-27 06:46:30,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:30,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696941002] [2023-08-27 06:46:30,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:30,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:30,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696941002] [2023-08-27 06:46:30,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696941002] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:46:30,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312761546] [2023-08-27 06:46:30,904 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:46:30,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:46:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:46:30,905 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:46:30,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-08-27 06:46:31,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-27 06:46:31,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:46:31,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:46:31,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:46:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:31,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:46:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:31,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312761546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:46:31,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:46:31,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:46:31,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449216693] [2023-08-27 06:46:31,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:46:31,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:46:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:46:31,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:46:31,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:46:31,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 742 places, 3518 transitions, 127570 flow. Second operand has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:31,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:31,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:46:31,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:47,498 INFO L124 PetriNetUnfolderBase]: 8276/13289 cut-off events. [2023-08-27 06:46:47,498 INFO L125 PetriNetUnfolderBase]: For 980717/980717 co-relation queries the response was YES. [2023-08-27 06:46:47,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211651 conditions, 13289 events. 8276/13289 cut-off events. For 980717/980717 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 93393 event pairs, 327 based on Foata normal form. 48/13337 useless extension candidates. Maximal degree in co-relation 211388. Up to 9486 conditions per place. [2023-08-27 06:46:47,822 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2755 selfloop transitions, 898 changer transitions 4/3657 dead transitions. [2023-08-27 06:46:47,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 3657 transitions, 139520 flow [2023-08-27 06:46:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:46:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:46:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5112 transitions. [2023-08-27 06:46:47,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389367050041892 [2023-08-27 06:46:47,825 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5112 transitions. [2023-08-27 06:46:47,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5112 transitions. [2023-08-27 06:46:47,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:47,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5112 transitions. [2023-08-27 06:46:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 269.05263157894734) internal successors, (5112), 19 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:47,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:47,833 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:47,833 INFO L175 Difference]: Start difference. First operand has 742 places, 3518 transitions, 127570 flow. Second operand 19 states and 5112 transitions. [2023-08-27 06:46:47,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 3657 transitions, 139520 flow [2023-08-27 06:47:06,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 3657 transitions, 134651 flow, removed 2278 selfloop flow, removed 17 redundant places. [2023-08-27 06:47:06,613 INFO L231 Difference]: Finished difference. Result has 748 places, 3609 transitions, 129139 flow [2023-08-27 06:47:06,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=124086, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=129139, PETRI_PLACES=748, PETRI_TRANSITIONS=3609} [2023-08-27 06:47:06,615 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 700 predicate places. [2023-08-27 06:47:06,616 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 3609 transitions, 129139 flow [2023-08-27 06:47:06,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:06,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:06,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:47:06,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2023-08-27 06:47:06,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2023-08-27 06:47:06,817 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:47:06,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash -610040079, now seen corresponding path program 73 times [2023-08-27 06:47:06,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:06,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514994200] [2023-08-27 06:47:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:06,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:06,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514994200] [2023-08-27 06:47:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514994200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:47:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674878001] [2023-08-27 06:47:06,918 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:47:06,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:47:06,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:47:06,919 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:47:06,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-08-27 06:47:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:07,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:47:07,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:47:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:07,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:47:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674878001] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:47:07,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:47:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-27 06:47:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200058217] [2023-08-27 06:47:07,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:47:07,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:47:07,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:07,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:47:07,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:47:07,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:47:07,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 3609 transitions, 129139 flow. Second operand has 18 states, 18 states have (on average 265.77777777777777) internal successors, (4784), 18 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:07,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:07,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:47:07,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:23,694 INFO L124 PetriNetUnfolderBase]: 8508/13637 cut-off events. [2023-08-27 06:47:23,694 INFO L125 PetriNetUnfolderBase]: For 846780/846780 co-relation queries the response was YES. [2023-08-27 06:47:23,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210346 conditions, 13637 events. 8508/13637 cut-off events. For 846780/846780 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 95881 event pairs, 396 based on Foata normal form. 42/13679 useless extension candidates. Maximal degree in co-relation 210086. Up to 10843 conditions per place. [2023-08-27 06:47:24,035 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 3037 selfloop transitions, 732 changer transitions 0/3769 dead transitions. [2023-08-27 06:47:24,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 3769 transitions, 140028 flow [2023-08-27 06:47:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-27 06:47:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-27 06:47:24,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 7772 transitions. [2023-08-27 06:47:24,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878437047756874 [2023-08-27 06:47:24,039 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 7772 transitions. [2023-08-27 06:47:24,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 7772 transitions. [2023-08-27 06:47:24,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:24,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 7772 transitions. [2023-08-27 06:47:24,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 268.0) internal successors, (7772), 29 states have internal predecessors, (7772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:24,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 691.0) internal successors, (20730), 30 states have internal predecessors, (20730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:24,051 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 691.0) internal successors, (20730), 30 states have internal predecessors, (20730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:24,051 INFO L175 Difference]: Start difference. First operand has 748 places, 3609 transitions, 129139 flow. Second operand 29 states and 7772 transitions. [2023-08-27 06:47:24,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 3769 transitions, 140028 flow [2023-08-27 06:47:40,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 3769 transitions, 137195 flow, removed 445 selfloop flow, removed 10 redundant places. [2023-08-27 06:47:40,317 INFO L231 Difference]: Finished difference. Result has 777 places, 3723 transitions, 131296 flow [2023-08-27 06:47:40,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=126484, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2945, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=131296, PETRI_PLACES=777, PETRI_TRANSITIONS=3723} [2023-08-27 06:47:40,319 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 729 predicate places. [2023-08-27 06:47:40,319 INFO L495 AbstractCegarLoop]: Abstraction has has 777 places, 3723 transitions, 131296 flow [2023-08-27 06:47:40,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 265.77777777777777) internal successors, (4784), 18 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:40,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:40,320 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:47:40,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2023-08-27 06:47:40,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2023-08-27 06:47:40,520 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:47:40,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:40,521 INFO L85 PathProgramCache]: Analyzing trace with hash 29901229, now seen corresponding path program 74 times [2023-08-27 06:47:40,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:40,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150872714] [2023-08-27 06:47:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:40,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150872714] [2023-08-27 06:47:40,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150872714] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:47:40,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692948515] [2023-08-27 06:47:40,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:47:40,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:47:40,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:47:40,618 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:47:40,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-08-27 06:47:41,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:47:41,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:47:41,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:47:41,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:47:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:41,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:47:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:41,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692948515] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:47:41,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:47:41,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:47:41,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001115464] [2023-08-27 06:47:41,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:47:41,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:47:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:47:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:47:41,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:47:41,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 3723 transitions, 131296 flow. Second operand has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:41,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:41,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:47:41,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:58,099 INFO L124 PetriNetUnfolderBase]: 8587/13798 cut-off events. [2023-08-27 06:47:58,099 INFO L125 PetriNetUnfolderBase]: For 822907/822907 co-relation queries the response was YES. [2023-08-27 06:47:58,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210960 conditions, 13798 events. 8587/13798 cut-off events. For 822907/822907 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 97691 event pairs, 292 based on Foata normal form. 30/13828 useless extension candidates. Maximal degree in co-relation 210690. Up to 10158 conditions per place. [2023-08-27 06:47:58,435 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2883 selfloop transitions, 929 changer transitions 0/3812 dead transitions. [2023-08-27 06:47:58,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 3812 transitions, 140391 flow [2023-08-27 06:47:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:47:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:47:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5639 transitions. [2023-08-27 06:47:58,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886017503962511 [2023-08-27 06:47:58,445 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5639 transitions. [2023-08-27 06:47:58,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5639 transitions. [2023-08-27 06:47:58,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:58,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5639 transitions. [2023-08-27 06:47:58,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.5238095238095) internal successors, (5639), 21 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:58,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:58,456 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:58,457 INFO L175 Difference]: Start difference. First operand has 777 places, 3723 transitions, 131296 flow. Second operand 21 states and 5639 transitions. [2023-08-27 06:47:58,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 3812 transitions, 140391 flow [2023-08-27 06:48:15,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 3812 transitions, 139842 flow, removed 244 selfloop flow, removed 3 redundant places. [2023-08-27 06:48:15,940 INFO L231 Difference]: Finished difference. Result has 800 places, 3771 transitions, 134150 flow [2023-08-27 06:48:15,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=130710, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=879, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=134150, PETRI_PLACES=800, PETRI_TRANSITIONS=3771} [2023-08-27 06:48:15,942 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 752 predicate places. [2023-08-27 06:48:15,942 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 3771 transitions, 134150 flow [2023-08-27 06:48:15,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.8) internal successors, (3987), 15 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:15,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:15,943 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:48:15,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-08-27 06:48:16,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2023-08-27 06:48:16,145 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:48:16,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1992517727, now seen corresponding path program 75 times [2023-08-27 06:48:16,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:16,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754690042] [2023-08-27 06:48:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:16,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:48:16,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754690042] [2023-08-27 06:48:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754690042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:48:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611759926] [2023-08-27 06:48:16,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:48:16,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:48:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:48:16,238 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:48:16,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-08-27 06:48:16,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 06:48:16,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:48:16,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:48:16,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:48:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:16,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:48:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 06:48:16,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611759926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:48:16,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:48:16,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2023-08-27 06:48:16,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190623423] [2023-08-27 06:48:16,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:48:16,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:48:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:48:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:48:16,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:48:16,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 3771 transitions, 134150 flow. Second operand has 16 states, 16 states have (on average 265.875) internal successors, (4254), 16 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:16,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:16,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:48:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:48:35,976 INFO L124 PetriNetUnfolderBase]: 8858/14201 cut-off events. [2023-08-27 06:48:35,976 INFO L125 PetriNetUnfolderBase]: For 858342/858342 co-relation queries the response was YES. [2023-08-27 06:48:36,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218073 conditions, 14201 events. 8858/14201 cut-off events. For 858342/858342 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 100588 event pairs, 398 based on Foata normal form. 56/14257 useless extension candidates. Maximal degree in co-relation 217796. Up to 10038 conditions per place. [2023-08-27 06:48:36,335 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2765 selfloop transitions, 1191 changer transitions 0/3956 dead transitions. [2023-08-27 06:48:36,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 3956 transitions, 145870 flow [2023-08-27 06:48:36,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:48:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:48:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 6178 transitions. [2023-08-27 06:48:36,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38872459573397095 [2023-08-27 06:48:36,338 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 6178 transitions. [2023-08-27 06:48:36,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 6178 transitions. [2023-08-27 06:48:36,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:48:36,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 6178 transitions. [2023-08-27 06:48:36,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 268.60869565217394) internal successors, (6178), 23 states have internal predecessors, (6178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:36,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:36,348 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 691.0) internal successors, (16584), 24 states have internal predecessors, (16584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:36,348 INFO L175 Difference]: Start difference. First operand has 800 places, 3771 transitions, 134150 flow. Second operand 23 states and 6178 transitions. [2023-08-27 06:48:36,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 3956 transitions, 145870 flow [2023-08-27 06:48:53,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 811 places, 3956 transitions, 145174 flow, removed 169 selfloop flow, removed 11 redundant places. [2023-08-27 06:48:53,533 INFO L231 Difference]: Finished difference. Result has 819 places, 3922 transitions, 140637 flow [2023-08-27 06:48:53,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=132583, PETRI_DIFFERENCE_MINUEND_PLACES=789, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1014, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=140637, PETRI_PLACES=819, PETRI_TRANSITIONS=3922} [2023-08-27 06:48:53,535 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 771 predicate places. [2023-08-27 06:48:53,535 INFO L495 AbstractCegarLoop]: Abstraction has has 819 places, 3922 transitions, 140637 flow [2023-08-27 06:48:53,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.875) internal successors, (4254), 16 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:53,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:53,536 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:48:53,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2023-08-27 06:48:53,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2023-08-27 06:48:53,736 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:48:53,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1199921825, now seen corresponding path program 76 times [2023-08-27 06:48:53,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709672445] [2023-08-27 06:48:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:53,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709672445] [2023-08-27 06:48:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709672445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:48:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039537255] [2023-08-27 06:48:53,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:48:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:48:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:48:53,836 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:48:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-08-27 06:48:54,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:48:54,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:48:54,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:48:54,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:48:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:54,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:48:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039537255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:48:54,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:48:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:48:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900157655] [2023-08-27 06:48:54,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:48:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:48:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:48:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:48:54,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:48:54,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 819 places, 3922 transitions, 140637 flow. Second operand has 16 states, 16 states have (on average 265.875) internal successors, (4254), 16 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:54,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:54,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:48:54,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:13,185 INFO L124 PetriNetUnfolderBase]: 8904/14283 cut-off events. [2023-08-27 06:49:13,185 INFO L125 PetriNetUnfolderBase]: For 866083/866083 co-relation queries the response was YES. [2023-08-27 06:49:13,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223037 conditions, 14283 events. 8904/14283 cut-off events. For 866083/866083 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 101796 event pairs, 367 based on Foata normal form. 2/14285 useless extension candidates. Maximal degree in co-relation 222752. Up to 10649 conditions per place. [2023-08-27 06:49:13,537 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 3110 selfloop transitions, 880 changer transitions 0/3990 dead transitions. [2023-08-27 06:49:13,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 3990 transitions, 149744 flow [2023-08-27 06:49:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 06:49:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 06:49:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5096 transitions. [2023-08-27 06:49:13,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3881483738289283 [2023-08-27 06:49:13,542 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5096 transitions. [2023-08-27 06:49:13,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5096 transitions. [2023-08-27 06:49:13,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:13,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5096 transitions. [2023-08-27 06:49:13,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 268.2105263157895) internal successors, (5096), 19 states have internal predecessors, (5096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:13,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:13,556 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 691.0) internal successors, (13820), 20 states have internal predecessors, (13820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:13,557 INFO L175 Difference]: Start difference. First operand has 819 places, 3922 transitions, 140637 flow. Second operand 19 states and 5096 transitions. [2023-08-27 06:49:13,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 3990 transitions, 149744 flow [2023-08-27 06:49:30,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 3990 transitions, 148653 flow, removed 189 selfloop flow, removed 9 redundant places. [2023-08-27 06:49:31,021 INFO L231 Difference]: Finished difference. Result has 832 places, 3948 transitions, 142132 flow [2023-08-27 06:49:31,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=139555, PETRI_DIFFERENCE_MINUEND_PLACES=810, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3922, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=854, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3049, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=142132, PETRI_PLACES=832, PETRI_TRANSITIONS=3948} [2023-08-27 06:49:31,023 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 784 predicate places. [2023-08-27 06:49:31,023 INFO L495 AbstractCegarLoop]: Abstraction has has 832 places, 3948 transitions, 142132 flow [2023-08-27 06:49:31,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.875) internal successors, (4254), 16 states have internal predecessors, (4254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:31,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:49:31,024 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:49:31,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-08-27 06:49:31,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:49:31,232 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:49:31,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:49:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1641088625, now seen corresponding path program 77 times [2023-08-27 06:49:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:49:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54801909] [2023-08-27 06:49:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:49:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:49:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:49:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:31,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:49:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54801909] [2023-08-27 06:49:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54801909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:49:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646258969] [2023-08-27 06:49:31,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:49:31,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:49:31,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:49:31,332 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:49:31,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2023-08-27 06:49:31,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-27 06:49:31,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:49:31,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:49:31,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:49:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:31,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:49:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646258969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:49:32,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:49:32,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-27 06:49:32,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051074860] [2023-08-27 06:49:32,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:49:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:49:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:49:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:49:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:49:32,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:49:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 832 places, 3948 transitions, 142132 flow. Second operand has 15 states, 15 states have (on average 265.93333333333334) internal successors, (3989), 15 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:32,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:49:32,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:49:32,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:50,751 INFO L124 PetriNetUnfolderBase]: 8916/14335 cut-off events. [2023-08-27 06:49:50,751 INFO L125 PetriNetUnfolderBase]: For 892844/892844 co-relation queries the response was YES. [2023-08-27 06:49:51,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223876 conditions, 14335 events. 8916/14335 cut-off events. For 892844/892844 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 102198 event pairs, 310 based on Foata normal form. 30/14365 useless extension candidates. Maximal degree in co-relation 223588. Up to 9672 conditions per place. [2023-08-27 06:49:51,125 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2769 selfloop transitions, 1245 changer transitions 0/4014 dead transitions. [2023-08-27 06:49:51,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 4014 transitions, 150830 flow [2023-08-27 06:49:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 06:49:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 06:49:51,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6447 transitions. [2023-08-27 06:49:51,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38874819102749636 [2023-08-27 06:49:51,128 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6447 transitions. [2023-08-27 06:49:51,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6447 transitions. [2023-08-27 06:49:51,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:51,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6447 transitions. [2023-08-27 06:49:51,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 268.625) internal successors, (6447), 24 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:51,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 691.0) internal successors, (17275), 25 states have internal predecessors, (17275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:51,138 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 691.0) internal successors, (17275), 25 states have internal predecessors, (17275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:51,138 INFO L175 Difference]: Start difference. First operand has 832 places, 3948 transitions, 142132 flow. Second operand 24 states and 6447 transitions. [2023-08-27 06:49:51,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 4014 transitions, 150830 flow [2023-08-27 06:50:08,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 4014 transitions, 149843 flow, removed 83 selfloop flow, removed 8 redundant places. [2023-08-27 06:50:09,073 INFO L231 Difference]: Finished difference. Result has 848 places, 3968 transitions, 144220 flow [2023-08-27 06:50:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=140657, PETRI_DIFFERENCE_MINUEND_PLACES=823, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=144220, PETRI_PLACES=848, PETRI_TRANSITIONS=3968} [2023-08-27 06:50:09,075 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 800 predicate places. [2023-08-27 06:50:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 848 places, 3968 transitions, 144220 flow [2023-08-27 06:50:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 265.93333333333334) internal successors, (3989), 15 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:09,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:50:09,076 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:50:09,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2023-08-27 06:50:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2023-08-27 06:50:09,276 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:50:09,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:50:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 227438291, now seen corresponding path program 78 times [2023-08-27 06:50:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:50:09,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442268287] [2023-08-27 06:50:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:50:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:50:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:09,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:50:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442268287] [2023-08-27 06:50:09,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442268287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:50:09,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20281260] [2023-08-27 06:50:09,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:50:09,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:50:09,416 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:50:09,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2023-08-27 06:50:10,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 06:50:10,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:50:10,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:50:10,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:50:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:10,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:50:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:10,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20281260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:50:10,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:50:10,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:50:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617007843] [2023-08-27 06:50:10,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:50:10,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:50:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:50:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:50:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:50:10,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:50:10,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 3968 transitions, 144220 flow. Second operand has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:10,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:50:10,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:50:10,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:50:29,303 INFO L124 PetriNetUnfolderBase]: 9062/14583 cut-off events. [2023-08-27 06:50:29,303 INFO L125 PetriNetUnfolderBase]: For 945116/945116 co-relation queries the response was YES. [2023-08-27 06:50:29,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229644 conditions, 14583 events. 9062/14583 cut-off events. For 945116/945116 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 104461 event pairs, 542 based on Foata normal form. 60/14643 useless extension candidates. Maximal degree in co-relation 229354. Up to 9706 conditions per place. [2023-08-27 06:50:29,687 INFO L140 encePairwiseOnDemand]: 685/691 looper letters, 2893 selfloop transitions, 1151 changer transitions 23/4067 dead transitions. [2023-08-27 06:50:29,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 866 places, 4067 transitions, 154807 flow [2023-08-27 06:50:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:50:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:50:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5647 transitions. [2023-08-27 06:50:29,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38915305630211566 [2023-08-27 06:50:29,690 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5647 transitions. [2023-08-27 06:50:29,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5647 transitions. [2023-08-27 06:50:29,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:50:29,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5647 transitions. [2023-08-27 06:50:29,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 268.9047619047619) internal successors, (5647), 21 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:29,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:29,699 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 691.0) internal successors, (15202), 22 states have internal predecessors, (15202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:29,699 INFO L175 Difference]: Start difference. First operand has 848 places, 3968 transitions, 144220 flow. Second operand 21 states and 5647 transitions. [2023-08-27 06:50:29,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 866 places, 4067 transitions, 154807 flow [2023-08-27 06:50:48,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 4067 transitions, 152862 flow, removed 140 selfloop flow, removed 19 redundant places. [2023-08-27 06:50:48,852 INFO L231 Difference]: Finished difference. Result has 853 places, 4005 transitions, 147076 flow [2023-08-27 06:50:48,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=691, PETRI_DIFFERENCE_MINUEND_FLOW=142135, PETRI_DIFFERENCE_MINUEND_PLACES=827, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2832, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=147076, PETRI_PLACES=853, PETRI_TRANSITIONS=4005} [2023-08-27 06:50:48,855 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 805 predicate places. [2023-08-27 06:50:48,855 INFO L495 AbstractCegarLoop]: Abstraction has has 853 places, 4005 transitions, 147076 flow [2023-08-27 06:50:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 265.75) internal successors, (4252), 16 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:48,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:50:48,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:50:48,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2023-08-27 06:50:49,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:49,065 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-27 06:50:49,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:50:49,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1513905070, now seen corresponding path program 79 times [2023-08-27 06:50:49,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:50:49,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979977894] [2023-08-27 06:50:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:50:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:50:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:50:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979977894] [2023-08-27 06:50:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979977894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:50:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779409709] [2023-08-27 06:50:49,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:50:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:50:49,169 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:50:49,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2023-08-27 06:50:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:49,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 06:50:49,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:50:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:50:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779409709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:50:49,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:50:49,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-27 06:50:49,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236593739] [2023-08-27 06:50:49,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:50:49,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:50:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:50:49,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:50:49,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:50:50,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 691 [2023-08-27 06:50:50,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 853 places, 4005 transitions, 147076 flow. Second operand has 16 states, 16 states have (on average 265.8125) internal successors, (4253), 16 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:50,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:50:50,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 691 [2023-08-27 06:50:50,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 06:51:04,510 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:51:04,510 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 06:51:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 06:51:04,670 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (58 of 59 remaining) [2023-08-27 06:51:04,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2023-08-27 06:51:04,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:51:04,871 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). [2023-08-27 06:51:04,872 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 59 remaining) [2023-08-27 06:51:04,873 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 59 remaining) [2023-08-27 06:51:04,874 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 59 remaining) [2023-08-27 06:51:04,875 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 59 remaining) [2023-08-27 06:51:04,876 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 59 remaining) [2023-08-27 06:51:04,876 INFO L445 BasicCegarLoop]: Path program histogram: [79, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:51:04,880 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:51:04,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:51:04,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:51:04 BasicIcfg [2023-08-27 06:51:04,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:51:04,883 INFO L158 Benchmark]: Toolchain (without parser) took 791736.04ms. Allocated memory was 360.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 337.0MB in the beginning and 4.1GB in the end (delta: -3.8GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-08-27 06:51:04,883 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 336.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:51:04,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.13ms. Allocated memory is still 360.7MB. Free memory was 336.6MB in the beginning and 325.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 06:51:04,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.13ms. Allocated memory is still 360.7MB. Free memory was 325.3MB in the beginning and 323.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:51:04,884 INFO L158 Benchmark]: Boogie Preprocessor took 47.99ms. Allocated memory is still 360.7MB. Free memory was 323.2MB in the beginning and 321.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:51:04,884 INFO L158 Benchmark]: RCFGBuilder took 678.70ms. Allocated memory is still 360.7MB. Free memory was 321.1MB in the beginning and 298.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 06:51:04,884 INFO L158 Benchmark]: TraceAbstraction took 790654.44ms. Allocated memory was 360.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 297.5MB in the beginning and 4.1GB in the end (delta: -3.8GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-08-27 06:51:04,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 336.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 287.13ms. Allocated memory is still 360.7MB. Free memory was 336.6MB in the beginning and 325.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.13ms. Allocated memory is still 360.7MB. Free memory was 325.3MB in the beginning and 323.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.99ms. Allocated memory is still 360.7MB. Free memory was 323.2MB in the beginning and 321.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 678.70ms. Allocated memory is still 360.7MB. Free memory was 321.1MB in the beginning and 298.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 790654.44ms. Allocated memory was 360.7MB in the beginning and 8.0GB in the end (delta: 7.7GB). Free memory was 297.5MB in the beginning and 4.1GB in the end (delta: -3.8GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.3s, 269 PlacesBefore, 48 PlacesAfterwards, 284 TransitionsBefore, 43 TransitionsAfterwards, 24308 CoEnabledTransitionPairs, 9 FixpointIterations, 67 TrivialSequentialCompositions, 260 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 44 ConcurrentYvCompositions, 20 ChoiceCompositions, 396 TotalNumberOfCompositions, 23537 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23537, independent: 23537, independent conditional: 0, independent unconditional: 23537, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13710, independent: 13710, independent conditional: 0, independent unconditional: 13710, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23537, independent: 9827, independent conditional: 0, independent unconditional: 9827, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 13710, unknown conditional: 0, unknown unconditional: 13710] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (16states, 264/691 universal loopers) in iteration 108,while PetriNetUnfolder was constructing finite prefix that currently has 149765 conditions, 9333 events (5857/9332 cut-off events. For 682674/682674 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 68972 event pairs, 1450 based on Foata normal form. 113/10293 useless extension candidates. Maximal degree in co-relation 149469. Up to 7661 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 464 locations, 59 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: 790.4s, OverallIterations: 108, TraceHistogramMax: 4, PathProgramHistogramMax: 79, EmptinessCheckTime: 0.0s, AutomataDifference: 654.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4298 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4298 mSDsluCounter, 746 SdHoareTripleChecker+Invalid, 13.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 484 mSDsCounter, 694 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27421 IncrementalHoareTripleChecker+Invalid, 28115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 694 mSolverCounterUnsat, 262 mSDtfsCounter, 27421 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4057 GetRequests, 2084 SyntacticMatches, 280 SemanticMatches, 1693 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10389 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147076occurred in iteration=107, InterpolantAutomatonStates: 1340, 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: 1.5s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 3029 NumberOfCodeBlocks, 3025 NumberOfCodeBlocksAsserted, 290 NumberOfCheckSat, 4152 ConstructedInterpolants, 0 QuantifiedInterpolants, 49235 SizeOfPredicates, 1568 NumberOfNonLiveVariables, 16017 ConjunctsInSsa, 1193 ConjunctsInUnsatCore, 280 InterpolantComputations, 23 PerfectInterpolantSequences, 497/1520 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown