/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:19:56,806 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:19:56,886 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 11:19:56,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:19:56,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:19:56,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:19:56,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:19:56,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:19:56,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:19:56,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:19:56,925 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:19:56,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:19:56,926 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:19:56,927 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:19:56,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:19:56,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:19:56,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:19:56,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:19:56,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:19:56,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:19:56,928 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:19:56,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:19:56,929 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:19:56,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:19:56,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:19:56,930 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:19:56,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:19:56,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:19:56,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:19:56,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:19:56,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:19:56,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:19:56,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:19:56,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:19:56,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:19:56,933 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:19:57,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:19:57,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:19:57,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:19:57,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:19:57,231 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:19:57,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-27 11:19:58,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:19:58,553 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:19:58,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-08-27 11:19:58,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37300faab/17666e5aa2a44753ae58db183db54017/FLAG31691fa6f [2023-08-27 11:19:58,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37300faab/17666e5aa2a44753ae58db183db54017 [2023-08-27 11:19:58,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:19:58,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:19:58,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:19:58,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:19:58,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:19:58,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:19:58" (1/1) ... [2023-08-27 11:19:58,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76d50c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:58, skipping insertion in model container [2023-08-27 11:19:58,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:19:58" (1/1) ... [2023-08-27 11:19:58,646 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:19:58,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:19:58,976 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:19:58,991 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 11:19:58,992 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 11:19:59,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:19:59,037 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:19:59,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59 WrapperNode [2023-08-27 11:19:59,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:19:59,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:19:59,039 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:19:59,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:19:59,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,104 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 110 [2023-08-27 11:19:59,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:19:59,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:19:59,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:19:59,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:19:59,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,114 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,114 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,121 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:19:59,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:19:59,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:19:59,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:19:59,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (1/1) ... [2023-08-27 11:19:59,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:19:59,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:19:59,164 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 11:19:59,166 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 11:19:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-27 11:19:59,189 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:19:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:19:59,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:19:59,192 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 11:19:59,297 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:19:59,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:19:59,456 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:19:59,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:19:59,464 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 11:19:59,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:19:59 BoogieIcfgContainer [2023-08-27 11:19:59,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:19:59,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:19:59,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:19:59,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:19:59,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:19:58" (1/3) ... [2023-08-27 11:19:59,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153ba2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:19:59, skipping insertion in model container [2023-08-27 11:19:59,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:19:59" (2/3) ... [2023-08-27 11:19:59,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153ba2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:19:59, skipping insertion in model container [2023-08-27 11:19:59,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:19:59" (3/3) ... [2023-08-27 11:19:59,472 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-08-27 11:19:59,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:19:59,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-27 11:19:59,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:19:59,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:19:59,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 257 flow [2023-08-27 11:19:59,712 INFO L124 PetriNetUnfolderBase]: 12/125 cut-off events. [2023-08-27 11:19:59,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:19:59,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 12/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 11:19:59,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 257 flow [2023-08-27 11:19:59,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 125 transitions, 253 flow [2023-08-27 11:19:59,729 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:19:59,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 125 transitions, 253 flow [2023-08-27 11:19:59,746 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 125 transitions, 253 flow [2023-08-27 11:19:59,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 253 flow [2023-08-27 11:19:59,788 INFO L124 PetriNetUnfolderBase]: 12/125 cut-off events. [2023-08-27 11:19:59,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:19:59,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 125 events. 12/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 278 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-08-27 11:19:59,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 4144 [2023-08-27 11:20:02,837 INFO L134 LiptonReduction]: Checked pairs total: 7623 [2023-08-27 11:20:02,837 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-27 11:20:02,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:20:02,853 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;@9a1687a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:20:02,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:20:02,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:20:02,861 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-27 11:20:02,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:20:02,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:02,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:20:02,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:02,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:02,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1888729532, now seen corresponding path program 1 times [2023-08-27 11:20:02,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:02,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188056909] [2023-08-27 11:20:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:03,196 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 11:20:03,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:03,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188056909] [2023-08-27 11:20:03,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188056909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:03,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:03,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:20:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283714803] [2023-08-27 11:20:03,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:03,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:20:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:20:03,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:20:03,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 254 [2023-08-27 11:20:03,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:03,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 254 [2023-08-27 11:20:03,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:03,339 INFO L124 PetriNetUnfolderBase]: 199/372 cut-off events. [2023-08-27 11:20:03,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:20:03,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 372 events. 199/372 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1519 event pairs, 109 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 736. Up to 308 conditions per place. [2023-08-27 11:20:03,343 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 36 selfloop transitions, 3 changer transitions 1/42 dead transitions. [2023-08-27 11:20:03,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 167 flow [2023-08-27 11:20:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:20:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:20:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-08-27 11:20:03,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645669291338583 [2023-08-27 11:20:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-08-27 11:20:03,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-08-27 11:20:03,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:03,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-08-27 11:20:03,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,370 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 71 flow. Second operand 3 states and 354 transitions. [2023-08-27 11:20:03,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 167 flow [2023-08-27 11:20:03,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:20:03,374 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 94 flow [2023-08-27 11:20:03,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-08-27 11:20:03,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2023-08-27 11:20:03,378 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 94 flow [2023-08-27 11:20:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:03,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:20:03,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:03,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 970197093, now seen corresponding path program 1 times [2023-08-27 11:20:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:03,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298037055] [2023-08-27 11:20:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:03,425 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 11:20:03,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:03,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298037055] [2023-08-27 11:20:03,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298037055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:03,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:03,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:20:03,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176046107] [2023-08-27 11:20:03,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:03,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:20:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:20:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:20:03,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-27 11:20:03,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:03,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-27 11:20:03,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:03,527 INFO L124 PetriNetUnfolderBase]: 192/373 cut-off events. [2023-08-27 11:20:03,528 INFO L125 PetriNetUnfolderBase]: For 64/78 co-relation queries the response was YES. [2023-08-27 11:20:03,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 373 events. 192/373 cut-off events. For 64/78 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1712 event pairs, 16 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 827. Up to 315 conditions per place. [2023-08-27 11:20:03,532 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 46 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2023-08-27 11:20:03,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 244 flow [2023-08-27 11:20:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:20:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:20:03,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-27 11:20:03,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4881889763779528 [2023-08-27 11:20:03,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-27 11:20:03,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-27 11:20:03,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:03,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-27 11:20:03,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,545 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 94 flow. Second operand 3 states and 372 transitions. [2023-08-27 11:20:03,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 244 flow [2023-08-27 11:20:03,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:20:03,549 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 104 flow [2023-08-27 11:20:03,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2023-08-27 11:20:03,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-27 11:20:03,550 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 104 flow [2023-08-27 11:20:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:03,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:03,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:20:03,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:03,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:03,555 INFO L85 PathProgramCache]: Analyzing trace with hash -888835783, now seen corresponding path program 1 times [2023-08-27 11:20:03,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101250415] [2023-08-27 11:20:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:03,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:03,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101250415] [2023-08-27 11:20:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101250415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:03,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:03,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:20:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536646144] [2023-08-27 11:20:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:03,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:20:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:20:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:20:03,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 254 [2023-08-27 11:20:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 254 [2023-08-27 11:20:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:03,766 INFO L124 PetriNetUnfolderBase]: 85/205 cut-off events. [2023-08-27 11:20:03,766 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-27 11:20:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 205 events. 85/205 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 771 event pairs, 5 based on Foata normal form. 28/174 useless extension candidates. Maximal degree in co-relation 500. Up to 156 conditions per place. [2023-08-27 11:20:03,767 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 31 selfloop transitions, 5 changer transitions 1/40 dead transitions. [2023-08-27 11:20:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 204 flow [2023-08-27 11:20:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:20:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:20:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-27 11:20:03,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45144356955380577 [2023-08-27 11:20:03,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-27 11:20:03,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-27 11:20:03,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:03,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-27 11:20:03,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,773 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 104 flow. Second operand 3 states and 344 transitions. [2023-08-27 11:20:03,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 204 flow [2023-08-27 11:20:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:20:03,774 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-08-27 11:20:03,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-27 11:20:03,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2023-08-27 11:20:03,775 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-08-27 11:20:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:03,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:03,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:20:03,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:03,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1992817577, now seen corresponding path program 1 times [2023-08-27 11:20:03,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867674311] [2023-08-27 11:20:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:03,824 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 11:20:03,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:03,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867674311] [2023-08-27 11:20:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867674311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:03,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:03,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:20:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540319266] [2023-08-27 11:20:03,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:03,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:20:03,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:20:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:20:03,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-27 11:20:03,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:03,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-27 11:20:03,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:03,941 INFO L124 PetriNetUnfolderBase]: 104/236 cut-off events. [2023-08-27 11:20:03,941 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-27 11:20:03,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 236 events. 104/236 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 823 event pairs, 42 based on Foata normal form. 6/187 useless extension candidates. Maximal degree in co-relation 635. Up to 112 conditions per place. [2023-08-27 11:20:03,943 INFO L140 encePairwiseOnDemand]: 242/254 looper letters, 39 selfloop transitions, 9 changer transitions 4/54 dead transitions. [2023-08-27 11:20:03,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 54 transitions, 290 flow [2023-08-27 11:20:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:20:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:20:03,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 528 transitions. [2023-08-27 11:20:03,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415748031496063 [2023-08-27 11:20:03,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 528 transitions. [2023-08-27 11:20:03,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 528 transitions. [2023-08-27 11:20:03,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:03,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 528 transitions. [2023-08-27 11:20:03,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,949 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 5 states and 528 transitions. [2023-08-27 11:20:03,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 54 transitions, 290 flow [2023-08-27 11:20:03,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 54 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:20:03,953 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 166 flow [2023-08-27 11:20:03,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2023-08-27 11:20:03,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-27 11:20:03,954 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 166 flow [2023-08-27 11:20:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:03,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:03,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:20:03,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:03,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1987677491, now seen corresponding path program 1 times [2023-08-27 11:20:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:03,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286343364] [2023-08-27 11:20:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:20:04,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286343364] [2023-08-27 11:20:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286343364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:04,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:20:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769528792] [2023-08-27 11:20:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:04,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:20:04,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:20:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:20:04,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 254 [2023-08-27 11:20:04,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:04,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 254 [2023-08-27 11:20:04,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:04,084 INFO L124 PetriNetUnfolderBase]: 102/232 cut-off events. [2023-08-27 11:20:04,086 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-27 11:20:04,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 232 events. 102/232 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 806 event pairs, 42 based on Foata normal form. 4/189 useless extension candidates. Maximal degree in co-relation 671. Up to 153 conditions per place. [2023-08-27 11:20:04,089 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 34 selfloop transitions, 6 changer transitions 1/43 dead transitions. [2023-08-27 11:20:04,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 266 flow [2023-08-27 11:20:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:20:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:20:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-27 11:20:04,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442257217847769 [2023-08-27 11:20:04,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-27 11:20:04,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-27 11:20:04,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:04,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-27 11:20:04,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,095 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 166 flow. Second operand 3 states and 337 transitions. [2023-08-27 11:20:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 266 flow [2023-08-27 11:20:04,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:20:04,100 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 180 flow [2023-08-27 11:20:04,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-27 11:20:04,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-08-27 11:20:04,102 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 180 flow [2023-08-27 11:20:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:04,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:20:04,103 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:04,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash -705810872, now seen corresponding path program 1 times [2023-08-27 11:20:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740272755] [2023-08-27 11:20:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:04,189 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 11:20:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740272755] [2023-08-27 11:20:04,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740272755] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:04,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:04,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:20:04,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372719518] [2023-08-27 11:20:04,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:04,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:20:04,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:20:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:20:04,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 254 [2023-08-27 11:20:04,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:04,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 254 [2023-08-27 11:20:04,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:04,305 INFO L124 PetriNetUnfolderBase]: 130/286 cut-off events. [2023-08-27 11:20:04,305 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2023-08-27 11:20:04,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 286 events. 130/286 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1027 event pairs, 22 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 908. Up to 98 conditions per place. [2023-08-27 11:20:04,307 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 59 selfloop transitions, 15 changer transitions 3/79 dead transitions. [2023-08-27 11:20:04,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 549 flow [2023-08-27 11:20:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:20:04,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:20:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2023-08-27 11:20:04,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41653543307086616 [2023-08-27 11:20:04,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2023-08-27 11:20:04,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2023-08-27 11:20:04,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:04,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2023-08-27 11:20:04,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 254.0) internal successors, (1524), 6 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,314 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 180 flow. Second operand 5 states and 529 transitions. [2023-08-27 11:20:04,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 549 flow [2023-08-27 11:20:04,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 536 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:20:04,316 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 299 flow [2023-08-27 11:20:04,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-27 11:20:04,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-08-27 11:20:04,317 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 299 flow [2023-08-27 11:20:04,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:04,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:04,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:20:04,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:04,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1488464216, now seen corresponding path program 1 times [2023-08-27 11:20:04,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:04,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952037103] [2023-08-27 11:20:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:04,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:04,365 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 11:20:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952037103] [2023-08-27 11:20:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952037103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058695316] [2023-08-27 11:20:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:04,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:04,373 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 11:20:04,406 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 11:20:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:04,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:20:04,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:04,576 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 11:20:04,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:04,618 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 11:20:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058695316] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:04,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 11:20:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932496211] [2023-08-27 11:20:04,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:04,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 11:20:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 11:20:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:20:04,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-27 11:20:04,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 299 flow. Second operand has 10 states, 10 states have (on average 97.8) internal successors, (978), 10 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:04,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-27 11:20:04,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:04,754 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2023-08-27 11:20:04,754 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2023-08-27 11:20:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 357 events. 162/357 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1355 event pairs, 60 based on Foata normal form. 2/300 useless extension candidates. Maximal degree in co-relation 1233. Up to 172 conditions per place. [2023-08-27 11:20:04,757 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 56 selfloop transitions, 17 changer transitions 4/79 dead transitions. [2023-08-27 11:20:04,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 589 flow [2023-08-27 11:20:04,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:20:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:20:04,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 923 transitions. [2023-08-27 11:20:04,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037620297462817 [2023-08-27 11:20:04,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 923 transitions. [2023-08-27 11:20:04,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 923 transitions. [2023-08-27 11:20:04,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:04,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 923 transitions. [2023-08-27 11:20:04,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.55555555555556) internal successors, (923), 9 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 254.0) internal successors, (2540), 10 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,767 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 299 flow. Second operand 9 states and 923 transitions. [2023-08-27 11:20:04,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 589 flow [2023-08-27 11:20:04,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:20:04,772 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 385 flow [2023-08-27 11:20:04,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-08-27 11:20:04,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2023-08-27 11:20:04,773 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 385 flow [2023-08-27 11:20:04,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.8) internal successors, (978), 10 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:04,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:04,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:20:04,785 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 11:20:04,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:04,981 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:04,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:04,981 INFO L85 PathProgramCache]: Analyzing trace with hash -187363738, now seen corresponding path program 1 times [2023-08-27 11:20:04,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:04,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612614971] [2023-08-27 11:20:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:04,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:05,037 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 11:20:05,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:05,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612614971] [2023-08-27 11:20:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612614971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:05,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639793351] [2023-08-27 11:20:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:05,039 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 11:20:05,056 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 11:20:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:05,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:20:05,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:05,149 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 11:20:05,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:05,178 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 11:20:05,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639793351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:05,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:05,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:20:05,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994778315] [2023-08-27 11:20:05,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:05,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:20:05,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:05,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:20:05,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:20:05,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-27 11:20:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-27 11:20:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:05,354 INFO L124 PetriNetUnfolderBase]: 259/557 cut-off events. [2023-08-27 11:20:05,355 INFO L125 PetriNetUnfolderBase]: For 1325/1335 co-relation queries the response was YES. [2023-08-27 11:20:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 557 events. 259/557 cut-off events. For 1325/1335 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2200 event pairs, 12 based on Foata normal form. 4/487 useless extension candidates. Maximal degree in co-relation 2030. Up to 206 conditions per place. [2023-08-27 11:20:05,359 INFO L140 encePairwiseOnDemand]: 249/254 looper letters, 130 selfloop transitions, 12 changer transitions 2/153 dead transitions. [2023-08-27 11:20:05,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 153 transitions, 1400 flow [2023-08-27 11:20:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:20:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:20:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2023-08-27 11:20:05,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48256467941507314 [2023-08-27 11:20:05,362 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2023-08-27 11:20:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2023-08-27 11:20:05,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:05,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2023-08-27 11:20:05,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,369 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 385 flow. Second operand 7 states and 858 transitions. [2023-08-27 11:20:05,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 153 transitions, 1400 flow [2023-08-27 11:20:05,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 153 transitions, 1379 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 11:20:05,376 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 455 flow [2023-08-27 11:20:05,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-27 11:20:05,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-08-27 11:20:05,378 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 455 flow [2023-08-27 11:20:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:05,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:20:05,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 11:20:05,584 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,SelfDestructingSolverStorable7 [2023-08-27 11:20:05,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:05,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -187363743, now seen corresponding path program 1 times [2023-08-27 11:20:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214797803] [2023-08-27 11:20:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:05,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:05,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214797803] [2023-08-27 11:20:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214797803] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:05,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:20:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655938490] [2023-08-27 11:20:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:20:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:20:05,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:20:05,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-27 11:20:05,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:05,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-27 11:20:05,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:05,696 INFO L124 PetriNetUnfolderBase]: 194/467 cut-off events. [2023-08-27 11:20:05,696 INFO L125 PetriNetUnfolderBase]: For 1740/1745 co-relation queries the response was YES. [2023-08-27 11:20:05,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 467 events. 194/467 cut-off events. For 1740/1745 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1887 event pairs, 58 based on Foata normal form. 31/490 useless extension candidates. Maximal degree in co-relation 1971. Up to 320 conditions per place. [2023-08-27 11:20:05,700 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 52 selfloop transitions, 5 changer transitions 3/69 dead transitions. [2023-08-27 11:20:05,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 69 transitions, 651 flow [2023-08-27 11:20:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:20:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:20:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-27 11:20:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658792650918635 [2023-08-27 11:20:05,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-27 11:20:05,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-27 11:20:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:05,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-27 11:20:05,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 254.0) internal successors, (1016), 4 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,705 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 455 flow. Second operand 3 states and 355 transitions. [2023-08-27 11:20:05,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 69 transitions, 651 flow [2023-08-27 11:20:05,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 637 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:20:05,712 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 424 flow [2023-08-27 11:20:05,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=424, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-08-27 11:20:05,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2023-08-27 11:20:05,713 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 424 flow [2023-08-27 11:20:05,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:05,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:20:05,714 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:05,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash 865768909, now seen corresponding path program 1 times [2023-08-27 11:20:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420526401] [2023-08-27 11:20:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:05,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:05,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420526401] [2023-08-27 11:20:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420526401] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225380876] [2023-08-27 11:20:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:05,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:05,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:05,816 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 11:20:05,819 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 11:20:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:05,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:20:05,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:05,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:20:05,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225380876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:05,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:20:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-08-27 11:20:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854555026] [2023-08-27 11:20:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:05,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:20:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:20:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:20:05,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-27 11:20:05,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 424 flow. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:05,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:05,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-27 11:20:05,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:06,088 INFO L124 PetriNetUnfolderBase]: 279/621 cut-off events. [2023-08-27 11:20:06,088 INFO L125 PetriNetUnfolderBase]: For 2012/2012 co-relation queries the response was YES. [2023-08-27 11:20:06,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 621 events. 279/621 cut-off events. For 2012/2012 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2470 event pairs, 80 based on Foata normal form. 22/643 useless extension candidates. Maximal degree in co-relation 2605. Up to 273 conditions per place. [2023-08-27 11:20:06,094 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 69 selfloop transitions, 17 changer transitions 10/98 dead transitions. [2023-08-27 11:20:06,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 98 transitions, 877 flow [2023-08-27 11:20:06,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:20:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:20:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 819 transitions. [2023-08-27 11:20:06,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4030511811023622 [2023-08-27 11:20:06,097 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 819 transitions. [2023-08-27 11:20:06,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 819 transitions. [2023-08-27 11:20:06,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:06,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 819 transitions. [2023-08-27 11:20:06,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.375) internal successors, (819), 8 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,102 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 254.0) internal successors, (2286), 9 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,102 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 424 flow. Second operand 8 states and 819 transitions. [2023-08-27 11:20:06,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 98 transitions, 877 flow [2023-08-27 11:20:06,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 841 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 11:20:06,110 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 499 flow [2023-08-27 11:20:06,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=499, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-27 11:20:06,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2023-08-27 11:20:06,111 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 499 flow [2023-08-27 11:20:06,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:06,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:06,120 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 11:20:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:06,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:06,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1359737571, now seen corresponding path program 1 times [2023-08-27 11:20:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:06,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407927986] [2023-08-27 11:20:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407927986] [2023-08-27 11:20:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407927986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:20:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545424605] [2023-08-27 11:20:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:20:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:20:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:20:06,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-27 11:20:06,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:06,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-27 11:20:06,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:06,557 INFO L124 PetriNetUnfolderBase]: 316/691 cut-off events. [2023-08-27 11:20:06,557 INFO L125 PetriNetUnfolderBase]: For 2880/2880 co-relation queries the response was YES. [2023-08-27 11:20:06,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3122 conditions, 691 events. 316/691 cut-off events. For 2880/2880 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2829 event pairs, 58 based on Foata normal form. 15/705 useless extension candidates. Maximal degree in co-relation 3087. Up to 250 conditions per place. [2023-08-27 11:20:06,563 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 76 selfloop transitions, 23 changer transitions 10/111 dead transitions. [2023-08-27 11:20:06,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 1074 flow [2023-08-27 11:20:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:20:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:20:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 629 transitions. [2023-08-27 11:20:06,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41272965879265094 [2023-08-27 11:20:06,565 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 629 transitions. [2023-08-27 11:20:06,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 629 transitions. [2023-08-27 11:20:06,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:06,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 629 transitions. [2023-08-27 11:20:06,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,570 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 254.0) internal successors, (1778), 7 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,570 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 499 flow. Second operand 6 states and 629 transitions. [2023-08-27 11:20:06,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 1074 flow [2023-08-27 11:20:06,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 1054 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-27 11:20:06,578 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 627 flow [2023-08-27 11:20:06,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=627, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-08-27 11:20:06,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-08-27 11:20:06,579 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 627 flow [2023-08-27 11:20:06,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:06,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:06,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:20:06,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:06,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash 338911444, now seen corresponding path program 1 times [2023-08-27 11:20:06,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:06,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979917398] [2023-08-27 11:20:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:06,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979917398] [2023-08-27 11:20:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979917398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:20:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035961208] [2023-08-27 11:20:06,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:06,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:20:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:20:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:20:06,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 254 [2023-08-27 11:20:06,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:06,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 254 [2023-08-27 11:20:06,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:06,836 INFO L124 PetriNetUnfolderBase]: 281/625 cut-off events. [2023-08-27 11:20:06,836 INFO L125 PetriNetUnfolderBase]: For 3526/3526 co-relation queries the response was YES. [2023-08-27 11:20:06,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 625 events. 281/625 cut-off events. For 3526/3526 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2457 event pairs, 99 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 2990. Up to 427 conditions per place. [2023-08-27 11:20:06,842 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 69 selfloop transitions, 12 changer transitions 15/98 dead transitions. [2023-08-27 11:20:06,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 1037 flow [2023-08-27 11:20:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:20:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:20:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 682 transitions. [2023-08-27 11:20:06,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357705286839144 [2023-08-27 11:20:06,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 682 transitions. [2023-08-27 11:20:06,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 682 transitions. [2023-08-27 11:20:06,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:06,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 682 transitions. [2023-08-27 11:20:06,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.42857142857143) internal successors, (682), 7 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,850 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,850 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 627 flow. Second operand 7 states and 682 transitions. [2023-08-27 11:20:06,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 1037 flow [2023-08-27 11:20:06,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 988 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-27 11:20:06,861 INFO L231 Difference]: Finished difference. Result has 81 places, 62 transitions, 640 flow [2023-08-27 11:20:06,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=640, PETRI_PLACES=81, PETRI_TRANSITIONS=62} [2023-08-27 11:20:06,862 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2023-08-27 11:20:06,862 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 62 transitions, 640 flow [2023-08-27 11:20:06,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:06,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:06,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:20:06,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:06,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash -47330081, now seen corresponding path program 1 times [2023-08-27 11:20:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146213146] [2023-08-27 11:20:06,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:06,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:06,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146213146] [2023-08-27 11:20:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146213146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:20:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:20:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:20:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133407274] [2023-08-27 11:20:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:20:06,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:20:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:20:06,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:20:06,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 254 [2023-08-27 11:20:06,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 62 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:06,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:06,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 254 [2023-08-27 11:20:06,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:07,112 INFO L124 PetriNetUnfolderBase]: 239/547 cut-off events. [2023-08-27 11:20:07,112 INFO L125 PetriNetUnfolderBase]: For 3029/3029 co-relation queries the response was YES. [2023-08-27 11:20:07,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2548 conditions, 547 events. 239/547 cut-off events. For 3029/3029 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2156 event pairs, 64 based on Foata normal form. 12/558 useless extension candidates. Maximal degree in co-relation 2506. Up to 303 conditions per place. [2023-08-27 11:20:07,118 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 54 selfloop transitions, 24 changer transitions 0/80 dead transitions. [2023-08-27 11:20:07,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 868 flow [2023-08-27 11:20:07,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:20:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:20:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 659 transitions. [2023-08-27 11:20:07,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37064116985376827 [2023-08-27 11:20:07,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 659 transitions. [2023-08-27 11:20:07,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 659 transitions. [2023-08-27 11:20:07,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:07,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 659 transitions. [2023-08-27 11:20:07,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.14285714285714) internal successors, (659), 7 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 254.0) internal successors, (2032), 8 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,126 INFO L175 Difference]: Start difference. First operand has 81 places, 62 transitions, 640 flow. Second operand 7 states and 659 transitions. [2023-08-27 11:20:07,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 868 flow [2023-08-27 11:20:07,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 845 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 11:20:07,135 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 613 flow [2023-08-27 11:20:07,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2023-08-27 11:20:07,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2023-08-27 11:20:07,136 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 613 flow [2023-08-27 11:20:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:07,137 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:07,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:20:07,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:07,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:07,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1688241050, now seen corresponding path program 1 times [2023-08-27 11:20:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:07,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145309301] [2023-08-27 11:20:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:07,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145309301] [2023-08-27 11:20:07,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145309301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629291136] [2023-08-27 11:20:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:07,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:07,291 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 11:20:07,293 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 11:20:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:07,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:20:07,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:07,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:07,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629291136] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:07,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:07,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-27 11:20:07,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552912678] [2023-08-27 11:20:07,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:07,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:20:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:20:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-27 11:20:07,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 254 [2023-08-27 11:20:07,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 613 flow. Second operand has 18 states, 18 states have (on average 97.83333333333333) internal successors, (1761), 18 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:07,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 254 [2023-08-27 11:20:07,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:07,760 INFO L124 PetriNetUnfolderBase]: 299/690 cut-off events. [2023-08-27 11:20:07,760 INFO L125 PetriNetUnfolderBase]: For 3753/3753 co-relation queries the response was YES. [2023-08-27 11:20:07,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 690 events. 299/690 cut-off events. For 3753/3753 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2925 event pairs, 104 based on Foata normal form. 36/725 useless extension candidates. Maximal degree in co-relation 3161. Up to 252 conditions per place. [2023-08-27 11:20:07,766 INFO L140 encePairwiseOnDemand]: 245/254 looper letters, 69 selfloop transitions, 27 changer transitions 23/121 dead transitions. [2023-08-27 11:20:07,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 121 transitions, 1249 flow [2023-08-27 11:20:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:20:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:20:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1509 transitions. [2023-08-27 11:20:07,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960629921259842 [2023-08-27 11:20:07,771 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1509 transitions. [2023-08-27 11:20:07,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1509 transitions. [2023-08-27 11:20:07,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:07,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1509 transitions. [2023-08-27 11:20:07,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,780 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,780 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 613 flow. Second operand 15 states and 1509 transitions. [2023-08-27 11:20:07,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 121 transitions, 1249 flow [2023-08-27 11:20:07,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 1186 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-27 11:20:07,792 INFO L231 Difference]: Finished difference. Result has 90 places, 63 transitions, 709 flow [2023-08-27 11:20:07,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=709, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2023-08-27 11:20:07,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2023-08-27 11:20:07,793 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 709 flow [2023-08-27 11:20:07,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.83333333333333) internal successors, (1761), 18 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:07,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:07,794 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 11:20:07,803 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 11:20:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:08,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:08,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1443481500, now seen corresponding path program 2 times [2023-08-27 11:20:08,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626464957] [2023-08-27 11:20:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626464957] [2023-08-27 11:20:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626464957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:08,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319374742] [2023-08-27 11:20:08,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:20:08,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:08,122 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 11:20:08,125 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 11:20:08,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:20:08,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:08,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:20:08,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:08,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:08,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319374742] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:08,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:08,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 25 [2023-08-27 11:20:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758744194] [2023-08-27 11:20:08,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 11:20:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 11:20:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-08-27 11:20:08,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 254 [2023-08-27 11:20:08,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 709 flow. Second operand has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:08,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:08,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 254 [2023-08-27 11:20:08,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:09,090 INFO L124 PetriNetUnfolderBase]: 299/812 cut-off events. [2023-08-27 11:20:09,090 INFO L125 PetriNetUnfolderBase]: For 4907/4907 co-relation queries the response was YES. [2023-08-27 11:20:09,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 812 events. 299/812 cut-off events. For 4907/4907 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3570 event pairs, 59 based on Foata normal form. 41/853 useless extension candidates. Maximal degree in co-relation 3848. Up to 218 conditions per place. [2023-08-27 11:20:09,098 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 190 selfloop transitions, 66 changer transitions 25/283 dead transitions. [2023-08-27 11:20:09,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 283 transitions, 3247 flow [2023-08-27 11:20:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-27 11:20:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-27 11:20:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3570 transitions. [2023-08-27 11:20:09,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36987152921674266 [2023-08-27 11:20:09,107 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3570 transitions. [2023-08-27 11:20:09,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3570 transitions. [2023-08-27 11:20:09,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:09,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3570 transitions. [2023-08-27 11:20:09,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 93.94736842105263) internal successors, (3570), 38 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:09,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 254.0) internal successors, (9906), 39 states have internal predecessors, (9906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:09,128 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 254.0) internal successors, (9906), 39 states have internal predecessors, (9906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:09,128 INFO L175 Difference]: Start difference. First operand has 90 places, 63 transitions, 709 flow. Second operand 38 states and 3570 transitions. [2023-08-27 11:20:09,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 283 transitions, 3247 flow [2023-08-27 11:20:09,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 283 transitions, 3059 flow, removed 56 selfloop flow, removed 9 redundant places. [2023-08-27 11:20:09,145 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 1491 flow [2023-08-27 11:20:09,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1491, PETRI_PLACES=128, PETRI_TRANSITIONS=109} [2023-08-27 11:20:09,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2023-08-27 11:20:09,146 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 1491 flow [2023-08-27 11:20:09,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 91.08) internal successors, (2277), 25 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:09,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:09,147 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:09,159 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 11:20:09,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 11:20:09,353 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:09,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:09,354 INFO L85 PathProgramCache]: Analyzing trace with hash 124225520, now seen corresponding path program 1 times [2023-08-27 11:20:09,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:09,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227796456] [2023-08-27 11:20:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:09,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227796456] [2023-08-27 11:20:09,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227796456] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:09,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491693442] [2023-08-27 11:20:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:09,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:09,518 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 11:20:09,532 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 11:20:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:09,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-27 11:20:09,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-27 11:20:09,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-08-27 11:20:09,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491693442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:09,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:09,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-27 11:20:09,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311726856] [2023-08-27 11:20:09,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 11:20:09,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:09,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 11:20:09,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:20:09,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:20:09,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 109 transitions, 1491 flow. Second operand has 16 states, 16 states have (on average 86.5) internal successors, (1384), 16 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:09,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:09,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:20:09,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:10,873 INFO L124 PetriNetUnfolderBase]: 428/1204 cut-off events. [2023-08-27 11:20:10,874 INFO L125 PetriNetUnfolderBase]: For 12863/12863 co-relation queries the response was YES. [2023-08-27 11:20:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 1204 events. 428/1204 cut-off events. For 12863/12863 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5303 event pairs, 59 based on Foata normal form. 89/1293 useless extension candidates. Maximal degree in co-relation 6534. Up to 298 conditions per place. [2023-08-27 11:20:10,887 INFO L140 encePairwiseOnDemand]: 242/254 looper letters, 272 selfloop transitions, 157 changer transitions 13/444 dead transitions. [2023-08-27 11:20:10,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 444 transitions, 5252 flow [2023-08-27 11:20:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-27 11:20:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-27 11:20:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 6034 transitions. [2023-08-27 11:20:10,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34428848567842063 [2023-08-27 11:20:10,899 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 6034 transitions. [2023-08-27 11:20:10,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 6034 transitions. [2023-08-27 11:20:10,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:10,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 6034 transitions. [2023-08-27 11:20:10,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 87.44927536231884) internal successors, (6034), 69 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:10,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 254.0) internal successors, (17780), 70 states have internal predecessors, (17780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:10,934 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 254.0) internal successors, (17780), 70 states have internal predecessors, (17780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:10,935 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 1491 flow. Second operand 69 states and 6034 transitions. [2023-08-27 11:20:10,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 444 transitions, 5252 flow [2023-08-27 11:20:10,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 444 transitions, 5022 flow, removed 67 selfloop flow, removed 15 redundant places. [2023-08-27 11:20:10,969 INFO L231 Difference]: Finished difference. Result has 204 places, 236 transitions, 3352 flow [2023-08-27 11:20:10,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=3352, PETRI_PLACES=204, PETRI_TRANSITIONS=236} [2023-08-27 11:20:10,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2023-08-27 11:20:10,970 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 236 transitions, 3352 flow [2023-08-27 11:20:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 86.5) internal successors, (1384), 16 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:10,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:10,971 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:10,983 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 11:20:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 11:20:11,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:11,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1082849684, now seen corresponding path program 2 times [2023-08-27 11:20:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699234775] [2023-08-27 11:20:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:11,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:11,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699234775] [2023-08-27 11:20:11,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699234775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:11,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675206670] [2023-08-27 11:20:11,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:20:11,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:11,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:11,309 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 11:20:11,312 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 11:20:11,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:20:11,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:11,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:20:11,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-27 11:20:11,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 43 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-27 11:20:11,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675206670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:11,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:11,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-27 11:20:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759662096] [2023-08-27 11:20:11,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:11,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 11:20:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 11:20:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-27 11:20:11,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:20:11,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 236 transitions, 3352 flow. Second operand has 25 states, 25 states have (on average 85.68) internal successors, (2142), 25 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:11,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:11,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:20:11,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:13,763 INFO L124 PetriNetUnfolderBase]: 727/2065 cut-off events. [2023-08-27 11:20:13,763 INFO L125 PetriNetUnfolderBase]: For 56413/56413 co-relation queries the response was YES. [2023-08-27 11:20:13,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14526 conditions, 2065 events. 727/2065 cut-off events. For 56413/56413 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10319 event pairs, 51 based on Foata normal form. 117/2182 useless extension candidates. Maximal degree in co-relation 14450. Up to 534 conditions per place. [2023-08-27 11:20:13,791 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 289 selfloop transitions, 390 changer transitions 14/695 dead transitions. [2023-08-27 11:20:13,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 695 transitions, 9982 flow [2023-08-27 11:20:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-27 11:20:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-27 11:20:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 8398 transitions. [2023-08-27 11:20:13,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408555889276727 [2023-08-27 11:20:13,804 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 8398 transitions. [2023-08-27 11:20:13,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 8398 transitions. [2023-08-27 11:20:13,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:13,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 8398 transitions. [2023-08-27 11:20:13,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 86.57731958762886) internal successors, (8398), 97 states have internal predecessors, (8398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:13,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 254.0) internal successors, (24892), 98 states have internal predecessors, (24892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:13,848 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 254.0) internal successors, (24892), 98 states have internal predecessors, (24892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:13,848 INFO L175 Difference]: Start difference. First operand has 204 places, 236 transitions, 3352 flow. Second operand 97 states and 8398 transitions. [2023-08-27 11:20:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 695 transitions, 9982 flow [2023-08-27 11:20:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 695 transitions, 9325 flow, removed 250 selfloop flow, removed 13 redundant places. [2023-08-27 11:20:14,008 INFO L231 Difference]: Finished difference. Result has 310 places, 435 transitions, 6623 flow [2023-08-27 11:20:14,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=6623, PETRI_PLACES=310, PETRI_TRANSITIONS=435} [2023-08-27 11:20:14,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2023-08-27 11:20:14,010 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 435 transitions, 6623 flow [2023-08-27 11:20:14,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 85.68) internal successors, (2142), 25 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:14,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:14,011 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-08-27 11:20:14,023 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 11:20:14,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:14,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:14,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:14,218 INFO L85 PathProgramCache]: Analyzing trace with hash 655524174, now seen corresponding path program 2 times [2023-08-27 11:20:14,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:14,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027617099] [2023-08-27 11:20:14,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:14,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:14,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027617099] [2023-08-27 11:20:14,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027617099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:14,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79773192] [2023-08-27 11:20:14,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:20:14,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:14,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:14,405 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 11:20:14,415 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 11:20:14,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:20:14,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:14,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 11:20:14,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:14,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79773192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:14,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-27 11:20:14,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041195597] [2023-08-27 11:20:14,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 11:20:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 11:20:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2023-08-27 11:20:14,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 254 [2023-08-27 11:20:14,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 435 transitions, 6623 flow. Second operand has 19 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:14,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:14,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 254 [2023-08-27 11:20:14,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:16,615 INFO L124 PetriNetUnfolderBase]: 1574/4903 cut-off events. [2023-08-27 11:20:16,615 INFO L125 PetriNetUnfolderBase]: For 552057/552066 co-relation queries the response was YES. [2023-08-27 11:20:16,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46813 conditions, 4903 events. 1574/4903 cut-off events. For 552057/552066 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 27581 event pairs, 107 based on Foata normal form. 755/5658 useless extension candidates. Maximal degree in co-relation 46718. Up to 1198 conditions per place. [2023-08-27 11:20:16,711 INFO L140 encePairwiseOnDemand]: 251/254 looper letters, 920 selfloop transitions, 116 changer transitions 18/1068 dead transitions. [2023-08-27 11:20:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1068 transitions, 18740 flow [2023-08-27 11:20:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-27 11:20:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-27 11:20:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2166 transitions. [2023-08-27 11:20:16,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473753280839895 [2023-08-27 11:20:16,714 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2166 transitions. [2023-08-27 11:20:16,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2166 transitions. [2023-08-27 11:20:16,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:16,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2166 transitions. [2023-08-27 11:20:16,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 120.33333333333333) internal successors, (2166), 18 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:16,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 254.0) internal successors, (4826), 19 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:16,721 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 254.0) internal successors, (4826), 19 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:16,721 INFO L175 Difference]: Start difference. First operand has 310 places, 435 transitions, 6623 flow. Second operand 18 states and 2166 transitions. [2023-08-27 11:20:16,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1068 transitions, 18740 flow [2023-08-27 11:20:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1068 transitions, 17774 flow, removed 257 selfloop flow, removed 22 redundant places. [2023-08-27 11:20:17,177 INFO L231 Difference]: Finished difference. Result has 313 places, 444 transitions, 6769 flow [2023-08-27 11:20:17,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=6076, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6769, PETRI_PLACES=313, PETRI_TRANSITIONS=444} [2023-08-27 11:20:17,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2023-08-27 11:20:17,178 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 444 transitions, 6769 flow [2023-08-27 11:20:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 112.73684210526316) internal successors, (2142), 19 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:17,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:17,178 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 16, 12, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:17,185 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 11:20:17,384 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,SelfDestructingSolverStorable17 [2023-08-27 11:20:17,385 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:17,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -310687950, now seen corresponding path program 3 times [2023-08-27 11:20:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977050586] [2023-08-27 11:20:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 564 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977050586] [2023-08-27 11:20:17,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977050586] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762584270] [2023-08-27 11:20:17,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 11:20:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:17,838 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 11:20:17,841 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 11:20:18,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-27 11:20:18,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:18,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 11:20:18,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-27 11:20:18,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 32 proven. 262 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-08-27 11:20:18,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762584270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:18,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:18,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 11] total 39 [2023-08-27 11:20:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258608775] [2023-08-27 11:20:18,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:18,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-27 11:20:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:18,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-27 11:20:18,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1197, Unknown=0, NotChecked=0, Total=1482 [2023-08-27 11:20:18,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:20:18,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 444 transitions, 6769 flow. Second operand has 39 states, 39 states have (on average 85.53846153846153) internal successors, (3336), 39 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:18,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:18,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:20:18,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:30,426 INFO L124 PetriNetUnfolderBase]: 2694/7989 cut-off events. [2023-08-27 11:20:30,426 INFO L125 PetriNetUnfolderBase]: For 694318/694318 co-relation queries the response was YES. [2023-08-27 11:20:30,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81217 conditions, 7989 events. 2694/7989 cut-off events. For 694318/694318 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 48754 event pairs, 80 based on Foata normal form. 201/8190 useless extension candidates. Maximal degree in co-relation 81117. Up to 2071 conditions per place. [2023-08-27 11:20:30,528 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 1420 selfloop transitions, 1312 changer transitions 108/2842 dead transitions. [2023-08-27 11:20:30,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 2842 transitions, 48651 flow [2023-08-27 11:20:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2023-08-27 11:20:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2023-08-27 11:20:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 35933 transitions. [2023-08-27 11:20:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425387504528036 [2023-08-27 11:20:30,713 INFO L72 ComplementDD]: Start complementDD. Operand 413 states and 35933 transitions. [2023-08-27 11:20:30,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 413 states and 35933 transitions. [2023-08-27 11:20:30,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:30,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 413 states and 35933 transitions. [2023-08-27 11:20:30,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 414 states, 413 states have (on average 87.00484261501211) internal successors, (35933), 413 states have internal predecessors, (35933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:30,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 414 states, 414 states have (on average 254.0) internal successors, (105156), 414 states have internal predecessors, (105156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:30,923 INFO L81 ComplementDD]: Finished complementDD. Result has 414 states, 414 states have (on average 254.0) internal successors, (105156), 414 states have internal predecessors, (105156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:30,923 INFO L175 Difference]: Start difference. First operand has 313 places, 444 transitions, 6769 flow. Second operand 413 states and 35933 transitions. [2023-08-27 11:20:30,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 2842 transitions, 48651 flow [2023-08-27 11:20:31,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 2842 transitions, 43453 flow, removed 2142 selfloop flow, removed 9 redundant places. [2023-08-27 11:20:31,622 INFO L231 Difference]: Finished difference. Result has 845 places, 1424 transitions, 27731 flow [2023-08-27 11:20:31,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=413, PETRI_FLOW=27731, PETRI_PLACES=845, PETRI_TRANSITIONS=1424} [2023-08-27 11:20:31,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 814 predicate places. [2023-08-27 11:20:31,623 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1424 transitions, 27731 flow [2023-08-27 11:20:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 85.53846153846153) internal successors, (3336), 39 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:31,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:31,624 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 17, 9, 9, 9, 9, 1, 1, 1, 1] [2023-08-27 11:20:31,629 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 11:20:31,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:31,825 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:31,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1235419256, now seen corresponding path program 3 times [2023-08-27 11:20:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:31,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662545014] [2023-08-27 11:20:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:31,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:32,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662545014] [2023-08-27 11:20:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662545014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581961138] [2023-08-27 11:20:32,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 11:20:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:32,400 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 11:20:32,403 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 11:20:32,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-08-27 11:20:32,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:32,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 11:20:32,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-27 11:20:33,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 34 proven. 506 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-08-27 11:20:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581961138] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:33,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:33,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 20] total 58 [2023-08-27 11:20:33,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849790158] [2023-08-27 11:20:33,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:33,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-27 11:20:33,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-27 11:20:33,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=2697, Unknown=0, NotChecked=0, Total=3306 [2023-08-27 11:20:33,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 254 [2023-08-27 11:20:33,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1424 transitions, 27731 flow. Second operand has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:33,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:33,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 254 [2023-08-27 11:20:33,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:20:40,987 INFO L124 PetriNetUnfolderBase]: 2759/8409 cut-off events. [2023-08-27 11:20:40,988 INFO L125 PetriNetUnfolderBase]: For 918030/918030 co-relation queries the response was YES. [2023-08-27 11:20:41,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87625 conditions, 8409 events. 2759/8409 cut-off events. For 918030/918030 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 51747 event pairs, 120 based on Foata normal form. 149/8558 useless extension candidates. Maximal degree in co-relation 87396. Up to 2221 conditions per place. [2023-08-27 11:20:41,167 INFO L140 encePairwiseOnDemand]: 244/254 looper letters, 1245 selfloop transitions, 822 changer transitions 65/2134 dead transitions. [2023-08-27 11:20:41,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 947 places, 2134 transitions, 45744 flow [2023-08-27 11:20:41,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-08-27 11:20:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-08-27 11:20:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 9674 transitions. [2023-08-27 11:20:41,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697729531381393 [2023-08-27 11:20:41,180 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 9674 transitions. [2023-08-27 11:20:41,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 9674 transitions. [2023-08-27 11:20:41,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:20:41,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 9674 transitions. [2023-08-27 11:20:41,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 93.92233009708738) internal successors, (9674), 103 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 11:20:41,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 254.0) internal successors, (26416), 104 states have internal predecessors, (26416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:41,224 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 254.0) internal successors, (26416), 104 states have internal predecessors, (26416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:41,224 INFO L175 Difference]: Start difference. First operand has 845 places, 1424 transitions, 27731 flow. Second operand 103 states and 9674 transitions. [2023-08-27 11:20:41,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 947 places, 2134 transitions, 45744 flow [2023-08-27 11:20:45,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 2134 transitions, 40761 flow, removed 1868 selfloop flow, removed 62 redundant places. [2023-08-27 11:20:45,766 INFO L231 Difference]: Finished difference. Result has 908 places, 1585 transitions, 29401 flow [2023-08-27 11:20:45,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=22900, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=103, PETRI_FLOW=29401, PETRI_PLACES=908, PETRI_TRANSITIONS=1585} [2023-08-27 11:20:45,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 877 predicate places. [2023-08-27 11:20:45,768 INFO L495 AbstractCegarLoop]: Abstraction has has 908 places, 1585 transitions, 29401 flow [2023-08-27 11:20:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 91.06896551724138) internal successors, (5282), 58 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:45,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:20:45,769 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 12, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:20:45,776 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 11:20:45,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:45,975 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:20:45,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:20:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1039744554, now seen corresponding path program 4 times [2023-08-27 11:20:45,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:20:45,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005544700] [2023-08-27 11:20:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:20:45,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:20:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:20:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:20:46,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:20:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005544700] [2023-08-27 11:20:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005544700] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:20:46,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551302477] [2023-08-27 11:20:46,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 11:20:46,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:20:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:20:46,504 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 11:20:46,525 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 11:20:46,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 11:20:46,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:20:46,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:20:46,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:20:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-27 11:20:46,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:20:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 344 proven. 134 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-08-27 11:20:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551302477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:20:47,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:20:47,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 49 [2023-08-27 11:20:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715726818] [2023-08-27 11:20:47,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:20:47,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 11:20:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:20:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 11:20:47,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1928, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 11:20:47,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:20:47,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 908 places, 1585 transitions, 29401 flow. Second operand has 49 states, 49 states have (on average 85.44897959183673) internal successors, (4187), 49 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:20:47,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:20:47,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:20:47,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:21:11,495 INFO L124 PetriNetUnfolderBase]: 4427/13686 cut-off events. [2023-08-27 11:21:11,495 INFO L125 PetriNetUnfolderBase]: For 2050858/2050858 co-relation queries the response was YES. [2023-08-27 11:21:11,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144687 conditions, 13686 events. 4427/13686 cut-off events. For 2050858/2050858 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 96319 event pairs, 145 based on Foata normal form. 318/14004 useless extension candidates. Maximal degree in co-relation 144433. Up to 3598 conditions per place. [2023-08-27 11:21:11,848 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 1942 selfloop transitions, 2549 changer transitions 13/4506 dead transitions. [2023-08-27 11:21:11,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1431 places, 4506 transitions, 95204 flow [2023-08-27 11:21:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 535 states. [2023-08-27 11:21:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2023-08-27 11:21:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 46511 transitions. [2023-08-27 11:21:11,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34226948266980645 [2023-08-27 11:21:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 535 states and 46511 transitions. [2023-08-27 11:21:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 46511 transitions. [2023-08-27 11:21:11,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:21:11,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 535 states and 46511 transitions. [2023-08-27 11:21:11,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 536 states, 535 states have (on average 86.93644859813084) internal successors, (46511), 535 states have internal predecessors, (46511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:21:12,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 536 states, 536 states have (on average 254.0) internal successors, (136144), 536 states have internal predecessors, (136144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:21:12,134 INFO L81 ComplementDD]: Finished complementDD. Result has 536 states, 536 states have (on average 254.0) internal successors, (136144), 536 states have internal predecessors, (136144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:21:12,134 INFO L175 Difference]: Start difference. First operand has 908 places, 1585 transitions, 29401 flow. Second operand 535 states and 46511 transitions. [2023-08-27 11:21:12,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1431 places, 4506 transitions, 95204 flow [2023-08-27 11:21:21,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1398 places, 4506 transitions, 90436 flow, removed 2210 selfloop flow, removed 33 redundant places. [2023-08-27 11:21:21,910 INFO L231 Difference]: Finished difference. Result has 1583 places, 2789 transitions, 63687 flow [2023-08-27 11:21:21,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=27786, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=535, PETRI_FLOW=63687, PETRI_PLACES=1583, PETRI_TRANSITIONS=2789} [2023-08-27 11:21:21,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1552 predicate places. [2023-08-27 11:21:21,914 INFO L495 AbstractCegarLoop]: Abstraction has has 1583 places, 2789 transitions, 63687 flow [2023-08-27 11:21:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 85.44897959183673) internal successors, (4187), 49 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:21:21,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:21:21,915 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 19, 11, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:21:21,923 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 11:21:22,120 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,SelfDestructingSolverStorable20 [2023-08-27 11:21:22,121 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:21:22,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:21:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash 57868260, now seen corresponding path program 5 times [2023-08-27 11:21:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:21:22,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269036669] [2023-08-27 11:21:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:21:22,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:21:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:21:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:21:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:21:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269036669] [2023-08-27 11:21:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269036669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:21:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789433359] [2023-08-27 11:21:22,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 11:21:22,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:21:22,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:21:22,629 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 11:21:22,659 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 11:21:22,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-08-27 11:21:22,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:21:22,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:21:22,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:21:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-27 11:21:23,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:21:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 390 proven. 296 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-08-27 11:21:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789433359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:21:23,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:21:23,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 58 [2023-08-27 11:21:23,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735021026] [2023-08-27 11:21:23,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:21:23,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-08-27 11:21:23,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:21:23,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-08-27 11:21:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=2729, Unknown=0, NotChecked=0, Total=3306 [2023-08-27 11:21:23,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:21:23,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1583 places, 2789 transitions, 63687 flow. Second operand has 58 states, 58 states have (on average 85.41379310344827) internal successors, (4954), 58 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:21:23,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:21:23,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:21:23,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:22:12,782 INFO L124 PetriNetUnfolderBase]: 6362/19735 cut-off events. [2023-08-27 11:22:12,783 INFO L125 PetriNetUnfolderBase]: For 8050270/8050270 co-relation queries the response was YES. [2023-08-27 11:22:14,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289641 conditions, 19735 events. 6362/19735 cut-off events. For 8050270/8050270 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 152576 event pairs, 217 based on Foata normal form. 442/20177 useless extension candidates. Maximal degree in co-relation 289203. Up to 5179 conditions per place. [2023-08-27 11:22:14,421 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 2418 selfloop transitions, 3899 changer transitions 15/6334 dead transitions. [2023-08-27 11:22:14,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2264 places, 6334 transitions, 178296 flow [2023-08-27 11:22:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2023-08-27 11:22:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2023-08-27 11:22:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 59322 transitions. [2023-08-27 11:22:14,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34194902064767524 [2023-08-27 11:22:14,476 INFO L72 ComplementDD]: Start complementDD. Operand 683 states and 59322 transitions. [2023-08-27 11:22:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 683 states and 59322 transitions. [2023-08-27 11:22:14,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:22:14,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 683 states and 59322 transitions. [2023-08-27 11:22:14,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 684 states, 683 states have (on average 86.85505124450951) internal successors, (59322), 683 states have internal predecessors, (59322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:14,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 684 states, 684 states have (on average 254.0) internal successors, (173736), 684 states have internal predecessors, (173736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:14,711 INFO L81 ComplementDD]: Finished complementDD. Result has 684 states, 684 states have (on average 254.0) internal successors, (173736), 684 states have internal predecessors, (173736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:22:14,711 INFO L175 Difference]: Start difference. First operand has 1583 places, 2789 transitions, 63687 flow. Second operand 683 states and 59322 transitions. [2023-08-27 11:22:14,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2264 places, 6334 transitions, 178296 flow [2023-08-27 11:23:15,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2236 places, 6334 transitions, 164707 flow, removed 6677 selfloop flow, removed 28 redundant places. [2023-08-27 11:23:15,925 INFO L231 Difference]: Finished difference. Result has 2434 places, 4170 transitions, 116563 flow [2023-08-27 11:23:15,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=55709, PETRI_DIFFERENCE_MINUEND_PLACES=1554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2562, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=683, PETRI_FLOW=116563, PETRI_PLACES=2434, PETRI_TRANSITIONS=4170} [2023-08-27 11:23:15,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2403 predicate places. [2023-08-27 11:23:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 2434 places, 4170 transitions, 116563 flow [2023-08-27 11:23:15,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 85.41379310344827) internal successors, (4954), 58 states have internal predecessors, (4954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:23:15,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:23:15,930 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 14, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:23:15,936 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 11:23:16,136 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,SelfDestructingSolverStorable21 [2023-08-27 11:23:16,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:23:16,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:23:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 973242582, now seen corresponding path program 6 times [2023-08-27 11:23:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:23:16,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059546791] [2023-08-27 11:23:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:23:16,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:23:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:23:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 0 proven. 889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:23:16,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:23:16,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059546791] [2023-08-27 11:23:16,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059546791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:23:16,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962562972] [2023-08-27 11:23:16,650 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 11:23:16,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:23:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:23:16,651 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 11:23:16,653 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 11:23:16,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-08-27 11:23:16,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:23:16,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-27 11:23:16,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:23:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-27 11:23:17,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:23:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 40 proven. 447 refuted. 0 times theorem prover too weak. 402 trivial. 0 not checked. [2023-08-27 11:23:17,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962562972] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:23:17,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:23:17,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 49 [2023-08-27 11:23:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958348791] [2023-08-27 11:23:17,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:23:17,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 11:23:17,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:23:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 11:23:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1930, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 11:23:17,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 254 [2023-08-27 11:23:17,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2434 places, 4170 transitions, 116563 flow. Second operand has 49 states, 49 states have (on average 85.77551020408163) internal successors, (4203), 49 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:23:17,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:23:17,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 254 [2023-08-27 11:23:17,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:25:26,633 INFO L124 PetriNetUnfolderBase]: 13605/41919 cut-off events. [2023-08-27 11:25:26,633 INFO L125 PetriNetUnfolderBase]: For 39085890/39085890 co-relation queries the response was YES. [2023-08-27 11:25:33,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846504 conditions, 41919 events. 13605/41919 cut-off events. For 39085890/39085890 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 379092 event pairs, 396 based on Foata normal form. 793/42712 useless extension candidates. Maximal degree in co-relation 845869. Up to 11108 conditions per place. [2023-08-27 11:25:33,864 INFO L140 encePairwiseOnDemand]: 243/254 looper letters, 2738 selfloop transitions, 7787 changer transitions 29/10556 dead transitions. [2023-08-27 11:25:33,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2900 places, 10556 transitions, 371914 flow [2023-08-27 11:25:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 468 states. [2023-08-27 11:25:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2023-08-27 11:25:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 40637 transitions. [2023-08-27 11:25:33,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418551046503802 [2023-08-27 11:25:33,894 INFO L72 ComplementDD]: Start complementDD. Operand 468 states and 40637 transitions. [2023-08-27 11:25:33,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 468 states and 40637 transitions. [2023-08-27 11:25:33,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:25:33,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 468 states and 40637 transitions. [2023-08-27 11:25:33,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 469 states, 468 states have (on average 86.83119658119658) internal successors, (40637), 468 states have internal predecessors, (40637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:34,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 469 states, 469 states have (on average 254.0) internal successors, (119126), 469 states have internal predecessors, (119126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:34,049 INFO L81 ComplementDD]: Finished complementDD. Result has 469 states, 469 states have (on average 254.0) internal successors, (119126), 469 states have internal predecessors, (119126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:25:34,049 INFO L175 Difference]: Start difference. First operand has 2434 places, 4170 transitions, 116563 flow. Second operand 468 states and 40637 transitions. [2023-08-27 11:25:34,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2900 places, 10556 transitions, 371914 flow Received shutdown request... [2023-08-27 11:33:42,515 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-27 11:33:42,521 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 11:33:42,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:33:42,563 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 11:33:42,716 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,SelfDestructingSolverStorable22 [2023-08-27 11:33:42,716 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (7 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-27 11:33:42,718 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:33:42,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:33:42,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-27 11:33:42,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONASSERT (2 of 13 remaining) [2023-08-27 11:33:42,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:33:42,719 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:33:42,719 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:42,723 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:33:42,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:33:42,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:33:42 BasicIcfg [2023-08-27 11:33:42,726 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:33:42,726 INFO L158 Benchmark]: Toolchain (without parser) took 824143.52ms. Allocated memory was 339.7MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 314.8MB in the beginning and 1.2GB in the end (delta: -925.7MB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:33:42,726 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 339.7MB. Free memory is still 315.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:33:42,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.66ms. Allocated memory is still 339.7MB. Free memory was 314.8MB in the beginning and 295.1MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:33:42,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.23ms. Allocated memory is still 339.7MB. Free memory was 295.1MB in the beginning and 293.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:33:42,727 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 339.7MB. Free memory was 293.0MB in the beginning and 291.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:33:42,727 INFO L158 Benchmark]: RCFGBuilder took 335.44ms. Allocated memory is still 339.7MB. Free memory was 291.3MB in the beginning and 276.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 11:33:42,728 INFO L158 Benchmark]: TraceAbstraction took 823258.21ms. Allocated memory was 339.7MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 275.9MB in the beginning and 1.2GB in the end (delta: -964.6MB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:33:42,729 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 339.7MB. Free memory is still 315.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 454.66ms. Allocated memory is still 339.7MB. Free memory was 314.8MB in the beginning and 295.1MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 65.23ms. Allocated memory is still 339.7MB. Free memory was 295.1MB in the beginning and 293.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 339.7MB. Free memory was 293.0MB in the beginning and 291.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 335.44ms. Allocated memory is still 339.7MB. Free memory was 291.3MB in the beginning and 276.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 823258.21ms. Allocated memory was 339.7MB in the beginning and 9.9GB in the end (delta: 9.6GB). Free memory was 275.9MB in the beginning and 1.2GB in the end (delta: -964.6MB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 117 PlacesBefore, 31 PlacesAfterwards, 125 TransitionsBefore, 34 TransitionsAfterwards, 4144 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 7623 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5230, independent: 5017, independent conditional: 0, independent unconditional: 5017, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2379, independent: 2330, independent conditional: 0, independent unconditional: 2330, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5230, independent: 2687, independent conditional: 0, independent unconditional: 2687, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 2379, unknown conditional: 0, unknown unconditional: 2379] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 744]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 744]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 743]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 724]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 724]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 164 locations, 13 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: 823.1s, OverallIterations: 23, TraceHistogramMax: 21, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 806.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10724 SdHoareTripleChecker+Valid, 10.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10724 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 97 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13120 IncrementalHoareTripleChecker+Invalid, 13377 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 7 mSDtfsCounter, 13120 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3894 GetRequests, 1258 SyntacticMatches, 0 SemanticMatches, 2636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630730 ImplicationChecksByTransitivity, 51.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116563occurred in iteration=22, InterpolantAutomatonStates: 2040, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1635 NumberOfCodeBlocks, 1611 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 2315 ConstructedInterpolants, 0 QuantifiedInterpolants, 6363 SizeOfPredicates, 59 NumberOfNonLiveVariables, 4287 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 48 InterpolantComputations, 11 PerfectInterpolantSequences, 4359/12312 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