/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:46:14,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:46:14,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:46:14,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:46:14,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:46:14,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:46:14,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:46:14,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:46:14,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:46:14,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:46:14,395 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:46:14,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:46:14,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:46:14,396 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:46:14,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:46:14,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:46:14,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:46:14,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:46:14,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:46:14,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:46:14,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:46:14,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:46:14,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:46:14,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:46:14,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:46:14,398 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:46:14,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:46:14,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:46:14,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:46:14,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:46:14,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:46:14,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:46:14,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:46:14,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:46:14,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:46:14,400 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:46:14,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:46:14,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:46:14,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:46:14,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:46:14,685 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:46:14,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-26 22:46:15,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:46:16,012 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:46:16,012 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-26 22:46:16,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5ae752d/26d1e36bac72428bbee23ddde4ec1b3b/FLAG18b0fdec5 [2023-08-26 22:46:16,033 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b5ae752d/26d1e36bac72428bbee23ddde4ec1b3b [2023-08-26 22:46:16,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:46:16,035 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:46:16,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:46:16,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:46:16,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:46:16,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3e58e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16, skipping insertion in model container [2023-08-26 22:46:16,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,097 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:46:16,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:46:16,456 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:46:16,482 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:46:16,483 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:46:16,491 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 22:46:16,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:46:16,556 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:46:16,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16 WrapperNode [2023-08-26 22:46:16,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:46:16,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:46:16,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:46:16,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:46:16,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,623 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 213 [2023-08-26 22:46:16,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:46:16,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:46:16,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:46:16,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:46:16,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:46:16,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:46:16,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:46:16,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:46:16,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (1/1) ... [2023-08-26 22:46:16,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:46:16,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:16,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:46:16,725 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:46:16,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:46:16,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:46:16,726 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:46:16,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:46:16,819 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:46:16,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:46:17,094 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:46:17,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:46:17,100 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 22:46:17,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:46:17 BoogieIcfgContainer [2023-08-26 22:46:17,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:46:17,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:46:17,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:46:17,106 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:46:17,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:46:16" (1/3) ... [2023-08-26 22:46:17,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348b7c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:46:17, skipping insertion in model container [2023-08-26 22:46:17,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:46:16" (2/3) ... [2023-08-26 22:46:17,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@348b7c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:46:17, skipping insertion in model container [2023-08-26 22:46:17,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:46:17" (3/3) ... [2023-08-26 22:46:17,107 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-08-26 22:46:17,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:46:17,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-26 22:46:17,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:46:17,190 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:46:17,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 229 transitions, 466 flow [2023-08-26 22:46:17,330 INFO L124 PetriNetUnfolderBase]: 48/313 cut-off events. [2023-08-26 22:46:17,330 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-26 22:46:17,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 313 events. 48/313 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1123 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-26 22:46:17,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 229 transitions, 466 flow [2023-08-26 22:46:17,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 226 transitions, 460 flow [2023-08-26 22:46:17,359 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:46:17,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 226 transitions, 460 flow [2023-08-26 22:46:17,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 226 transitions, 460 flow [2023-08-26 22:46:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 226 transitions, 460 flow [2023-08-26 22:46:17,416 INFO L124 PetriNetUnfolderBase]: 47/310 cut-off events. [2023-08-26 22:46:17,417 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-26 22:46:17,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 310 events. 47/310 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1122 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-26 22:46:17,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 15040 [2023-08-26 22:46:20,095 INFO L134 LiptonReduction]: Checked pairs total: 23492 [2023-08-26 22:46:20,096 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-26 22:46:20,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:46:20,108 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;@55d08439, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:46:20,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:46:20,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:46:20,109 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:46:20,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:46:20,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:20,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:46:20,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:20,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash 28997, now seen corresponding path program 1 times [2023-08-26 22:46:20,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:20,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907609966] [2023-08-26 22:46:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:20,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:20,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907609966] [2023-08-26 22:46:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907609966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:20,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:20,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:46:20,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865822410] [2023-08-26 22:46:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:20,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:20,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 436 [2023-08-26 22:46:20,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:20,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 436 [2023-08-26 22:46:20,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:20,503 INFO L124 PetriNetUnfolderBase]: 521/1093 cut-off events. [2023-08-26 22:46:20,503 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:46:20,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1093 events. 521/1093 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5985 event pairs, 475 based on Foata normal form. 118/858 useless extension candidates. Maximal degree in co-relation 2053. Up to 1025 conditions per place. [2023-08-26 22:46:20,508 INFO L140 encePairwiseOnDemand]: 408/436 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-26 22:46:20,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 232 flow [2023-08-26 22:46:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-26 22:46:20,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923547400611621 [2023-08-26 22:46:20,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-26 22:46:20,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-26 22:46:20,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:20,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-26 22:46:20,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,536 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 172 flow. Second operand 3 states and 644 transitions. [2023-08-26 22:46:20,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 232 flow [2023-08-26 22:46:20,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 232 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:46:20,540 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 138 flow [2023-08-26 22:46:20,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-26 22:46:20,544 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2023-08-26 22:46:20,544 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 138 flow [2023-08-26 22:46:20,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:20,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:46:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:46:20,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:20,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 900686, now seen corresponding path program 1 times [2023-08-26 22:46:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438358988] [2023-08-26 22:46:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438358988] [2023-08-26 22:46:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438358988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:20,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644075594] [2023-08-26 22:46:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:20,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:20,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 436 [2023-08-26 22:46:20,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:20,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 436 [2023-08-26 22:46:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:20,728 INFO L124 PetriNetUnfolderBase]: 521/1092 cut-off events. [2023-08-26 22:46:20,728 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:46:20,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 1092 events. 521/1092 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5996 event pairs, 475 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 2118. Up to 1022 conditions per place. [2023-08-26 22:46:20,732 INFO L140 encePairwiseOnDemand]: 433/436 looper letters, 50 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-26 22:46:20,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 238 flow [2023-08-26 22:46:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:20,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 616 transitions. [2023-08-26 22:46:20,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709480122324159 [2023-08-26 22:46:20,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 616 transitions. [2023-08-26 22:46:20,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 616 transitions. [2023-08-26 22:46:20,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:20,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 616 transitions. [2023-08-26 22:46:20,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,738 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 138 flow. Second operand 3 states and 616 transitions. [2023-08-26 22:46:20,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 238 flow [2023-08-26 22:46:20,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 234 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:46:20,740 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 134 flow [2023-08-26 22:46:20,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-08-26 22:46:20,741 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2023-08-26 22:46:20,741 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 134 flow [2023-08-26 22:46:20,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:20,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:20,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:46:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:46:20,742 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:20,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1065048238, now seen corresponding path program 1 times [2023-08-26 22:46:20,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:20,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438256088] [2023-08-26 22:46:20,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:20,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438256088] [2023-08-26 22:46:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438256088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414241061] [2023-08-26 22:46:20,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:20,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:20,854 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) [2023-08-26 22:46:20,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:46:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:20,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:46:20,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:21,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:46:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:21,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414241061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:46:21,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:46:21,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:46:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674865523] [2023-08-26 22:46:21,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:46:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:46:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:21,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:46:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:46:21,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 436 [2023-08-26 22:46:21,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 189.57142857142858) internal successors, (1327), 7 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:21,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 436 [2023-08-26 22:46:21,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:21,172 INFO L124 PetriNetUnfolderBase]: 521/1095 cut-off events. [2023-08-26 22:46:21,172 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:46:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2139 conditions, 1095 events. 521/1095 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5995 event pairs, 475 based on Foata normal form. 3/747 useless extension candidates. Maximal degree in co-relation 2112. Up to 1024 conditions per place. [2023-08-26 22:46:21,177 INFO L140 encePairwiseOnDemand]: 433/436 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-26 22:46:21,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 256 flow [2023-08-26 22:46:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:46:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:46:21,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1186 transitions. [2023-08-26 22:46:21,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533639143730887 [2023-08-26 22:46:21,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1186 transitions. [2023-08-26 22:46:21,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1186 transitions. [2023-08-26 22:46:21,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:21,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1186 transitions. [2023-08-26 22:46:21,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.66666666666666) internal successors, (1186), 6 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 436.0) internal successors, (3052), 7 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,186 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 436.0) internal successors, (3052), 7 states have internal predecessors, (3052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,186 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 6 states and 1186 transitions. [2023-08-26 22:46:21,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 256 flow [2023-08-26 22:46:21,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:46:21,188 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 166 flow [2023-08-26 22:46:21,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-26 22:46:21,189 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-26 22:46:21,189 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 166 flow [2023-08-26 22:46:21,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 189.57142857142858) internal successors, (1327), 7 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:21,190 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-26 22:46:21,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:46:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:21,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:21,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1097272343, now seen corresponding path program 2 times [2023-08-26 22:46:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:21,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857746234] [2023-08-26 22:46:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:21,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:46:21,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:21,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857746234] [2023-08-26 22:46:21,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857746234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:21,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:21,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:21,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378626864] [2023-08-26 22:46:21,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:21,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:21,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 436 [2023-08-26 22:46:21,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:21,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 436 [2023-08-26 22:46:21,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:21,575 INFO L124 PetriNetUnfolderBase]: 459/991 cut-off events. [2023-08-26 22:46:21,575 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 22:46:21,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 991 events. 459/991 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6137 event pairs, 0 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 1934. Up to 907 conditions per place. [2023-08-26 22:46:21,579 INFO L140 encePairwiseOnDemand]: 431/436 looper letters, 71 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-26 22:46:21,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 348 flow [2023-08-26 22:46:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:21,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-26 22:46:21,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48623853211009177 [2023-08-26 22:46:21,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-26 22:46:21,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-26 22:46:21,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:21,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-26 22:46:21,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 436.0) internal successors, (1744), 4 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,586 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 166 flow. Second operand 3 states and 636 transitions. [2023-08-26 22:46:21,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 348 flow [2023-08-26 22:46:21,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 334 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:46:21,588 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 156 flow [2023-08-26 22:46:21,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-08-26 22:46:21,589 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2023-08-26 22:46:21,589 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 156 flow [2023-08-26 22:46:21,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:21,590 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 22:46:21,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:46:21,590 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:21,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2083165533, now seen corresponding path program 1 times [2023-08-26 22:46:21,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:21,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409962091] [2023-08-26 22:46:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:46:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409962091] [2023-08-26 22:46:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409962091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585103231] [2023-08-26 22:46:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:21,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:21,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:21,657 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) [2023-08-26 22:46:21,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:46:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:21,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:46:21,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:46:21,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:46:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 22:46:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585103231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:46:21,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:46:21,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:46:21,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299891269] [2023-08-26 22:46:21,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:46:21,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:46:21,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:21,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:46:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:46:21,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 436 [2023-08-26 22:46:21,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 156 flow. Second operand has 13 states, 13 states have (on average 189.30769230769232) internal successors, (2461), 13 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:21,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 436 [2023-08-26 22:46:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:21,963 INFO L124 PetriNetUnfolderBase]: 480/992 cut-off events. [2023-08-26 22:46:21,963 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-26 22:46:21,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 992 events. 480/992 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5317 event pairs, 437 based on Foata normal form. 6/728 useless extension candidates. Maximal degree in co-relation 1972. Up to 925 conditions per place. [2023-08-26 22:46:21,967 INFO L140 encePairwiseOnDemand]: 433/436 looper letters, 48 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2023-08-26 22:46:21,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 310 flow [2023-08-26 22:46:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:46:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:46:21,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2321 transitions. [2023-08-26 22:46:21,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436162079510703 [2023-08-26 22:46:21,971 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2321 transitions. [2023-08-26 22:46:21,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2321 transitions. [2023-08-26 22:46:21,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:21,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2321 transitions. [2023-08-26 22:46:21,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.41666666666666) internal successors, (2321), 12 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 436.0) internal successors, (5668), 13 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,983 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 436.0) internal successors, (5668), 13 states have internal predecessors, (5668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,983 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 156 flow. Second operand 12 states and 2321 transitions. [2023-08-26 22:46:21,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 310 flow [2023-08-26 22:46:21,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:46:21,987 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 236 flow [2023-08-26 22:46:21,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=436, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=236, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2023-08-26 22:46:21,989 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2023-08-26 22:46:21,989 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 236 flow [2023-08-26 22:46:21,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.30769230769232) internal successors, (2461), 13 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:21,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:21,990 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 22:46:21,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 22:46:22,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:22,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:46:22,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1274500285, now seen corresponding path program 2 times [2023-08-26 22:46:22,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:22,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350204018] [2023-08-26 22:46:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:22,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:46:22,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:46:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:46:22,254 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:46:22,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:46:22,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:46:22,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:46:22,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:46:22,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:46:22,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:46:22,257 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (10 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (5 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:46:22,259 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:46:22,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:46:22,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:46:22,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 22 remaining) [2023-08-26 22:46:22,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:46:22,262 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-26 22:46:22,263 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:46:22,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:46:22,292 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:46:22,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,331 INFO L124 PetriNetUnfolderBase]: 80/516 cut-off events. [2023-08-26 22:46:22,331 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-26 22:46:22,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 516 events. 80/516 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2249 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2023-08-26 22:46:22,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,337 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:46:22,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 311 transitions, 640 flow [2023-08-26 22:46:22,372 INFO L124 PetriNetUnfolderBase]: 80/516 cut-off events. [2023-08-26 22:46:22,372 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-26 22:46:22,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 516 events. 80/516 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2249 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2023-08-26 22:46:22,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 45920 [2023-08-26 22:46:25,847 INFO L134 LiptonReduction]: Checked pairs total: 81229 [2023-08-26 22:46:25,847 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-08-26 22:46:25,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:46:25,853 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;@55d08439, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:46:25,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-26 22:46:25,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:46:25,854 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:46:25,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:46:25,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:25,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:46:25,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:25,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 50710, now seen corresponding path program 1 times [2023-08-26 22:46:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434347920] [2023-08-26 22:46:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:25,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:25,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434347920] [2023-08-26 22:46:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434347920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:46:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287433099] [2023-08-26 22:46:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:25,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:25,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:25,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 119 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:25,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:25,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:25,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:27,879 INFO L124 PetriNetUnfolderBase]: 20981/33073 cut-off events. [2023-08-26 22:46:27,879 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-26 22:46:27,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63989 conditions, 33073 events. 20981/33073 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 250164 event pairs, 19766 based on Foata normal form. 4534/26813 useless extension candidates. Maximal degree in co-relation 26990. Up to 30793 conditions per place. [2023-08-26 22:46:28,188 INFO L140 encePairwiseOnDemand]: 561/598 looper letters, 73 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-26 22:46:28,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 87 transitions, 342 flow [2023-08-26 22:46:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-26 22:46:28,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866220735785953 [2023-08-26 22:46:28,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-26 22:46:28,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-26 22:46:28,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:28,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-26 22:46:28,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:28,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:28,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:28,195 INFO L175 Difference]: Start difference. First operand has 86 places, 119 transitions, 256 flow. Second operand 3 states and 873 transitions. [2023-08-26 22:46:28,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 87 transitions, 342 flow [2023-08-26 22:46:28,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:46:28,197 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 204 flow [2023-08-26 22:46:28,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-08-26 22:46:28,198 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-26 22:46:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 204 flow [2023-08-26 22:46:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:28,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:28,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:46:28,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:46:28,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:28,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1575073, now seen corresponding path program 1 times [2023-08-26 22:46:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947164522] [2023-08-26 22:46:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:28,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947164522] [2023-08-26 22:46:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947164522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126657081] [2023-08-26 22:46:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:28,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:28,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:28,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:28,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:28,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:28,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:30,020 INFO L124 PetriNetUnfolderBase]: 20981/33072 cut-off events. [2023-08-26 22:46:30,021 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-26 22:46:30,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63994 conditions, 33072 events. 20981/33072 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 250101 event pairs, 19766 based on Foata normal form. 0/22279 useless extension candidates. Maximal degree in co-relation 63981. Up to 30790 conditions per place. [2023-08-26 22:46:30,158 INFO L140 encePairwiseOnDemand]: 595/598 looper letters, 72 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-26 22:46:30,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 348 flow [2023-08-26 22:46:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-08-26 22:46:30,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659977703455964 [2023-08-26 22:46:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-08-26 22:46:30,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-08-26 22:46:30,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:30,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-08-26 22:46:30,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:30,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:30,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:30,165 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 204 flow. Second operand 3 states and 836 transitions. [2023-08-26 22:46:30,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 348 flow [2023-08-26 22:46:30,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 86 transitions, 344 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 22:46:30,169 INFO L231 Difference]: Finished difference. Result has 88 places, 86 transitions, 200 flow [2023-08-26 22:46:30,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=86} [2023-08-26 22:46:30,170 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2023-08-26 22:46:30,170 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 86 transitions, 200 flow [2023-08-26 22:46:30,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:30,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:30,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:30,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:46:30,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:30,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1271499369, now seen corresponding path program 1 times [2023-08-26 22:46:30,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:30,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628334484] [2023-08-26 22:46:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:30,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628334484] [2023-08-26 22:46:30,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628334484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868912797] [2023-08-26 22:46:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:30,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:30,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:30,233 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) [2023-08-26 22:46:30,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 22:46:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:30,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 22:46:30,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:46:30,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:46:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868912797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:30,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:46:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 22:46:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906507818] [2023-08-26 22:46:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:30,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:46:30,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:30,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 86 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:30,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:30,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:30,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:32,153 INFO L124 PetriNetUnfolderBase]: 21118/32909 cut-off events. [2023-08-26 22:46:32,153 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-26 22:46:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63780 conditions, 32909 events. 21118/32909 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1367. Compared 246267 event pairs, 14999 based on Foata normal form. 0/22172 useless extension candidates. Maximal degree in co-relation 63761. Up to 29572 conditions per place. [2023-08-26 22:46:32,288 INFO L140 encePairwiseOnDemand]: 593/598 looper letters, 111 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-08-26 22:46:32,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 508 flow [2023-08-26 22:46:32,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:32,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 877 transitions. [2023-08-26 22:46:32,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48885172798216275 [2023-08-26 22:46:32,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 877 transitions. [2023-08-26 22:46:32,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 877 transitions. [2023-08-26 22:46:32,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:32,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 877 transitions. [2023-08-26 22:46:32,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:32,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:32,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:32,296 INFO L175 Difference]: Start difference. First operand has 88 places, 86 transitions, 200 flow. Second operand 3 states and 877 transitions. [2023-08-26 22:46:32,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 508 flow [2023-08-26 22:46:32,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:46:32,298 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 220 flow [2023-08-26 22:46:32,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2023-08-26 22:46:32,299 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2023-08-26 22:46:32,299 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 220 flow [2023-08-26 22:46:32,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:32,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:32,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:32,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 22:46:32,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:32,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:32,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1272751460, now seen corresponding path program 1 times [2023-08-26 22:46:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758590322] [2023-08-26 22:46:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758590322] [2023-08-26 22:46:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758590322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447982443] [2023-08-26 22:46:32,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:32,550 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) [2023-08-26 22:46:32,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 22:46:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:32,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:46:32,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:32,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:46:32,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447982443] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:46:32,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:46:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:46:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024084094] [2023-08-26 22:46:32,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:46:32,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:46:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:46:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:46:32,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:32,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 255.57142857142858) internal successors, (1789), 7 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:32,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:32,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:32,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:34,621 INFO L124 PetriNetUnfolderBase]: 21118/32804 cut-off events. [2023-08-26 22:46:34,621 INFO L125 PetriNetUnfolderBase]: For 2124/2124 co-relation queries the response was YES. [2023-08-26 22:46:34,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65654 conditions, 32804 events. 21118/32804 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 245045 event pairs, 19747 based on Foata normal form. 3/22798 useless extension candidates. Maximal degree in co-relation 65625. Up to 30733 conditions per place. [2023-08-26 22:46:34,753 INFO L140 encePairwiseOnDemand]: 595/598 looper letters, 74 selfloop transitions, 5 changer transitions 0/91 dead transitions. [2023-08-26 22:46:34,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 390 flow [2023-08-26 22:46:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:46:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:46:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1604 transitions. [2023-08-26 22:46:34,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44704570791527315 [2023-08-26 22:46:34,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1604 transitions. [2023-08-26 22:46:34,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1604 transitions. [2023-08-26 22:46:34,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:34,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1604 transitions. [2023-08-26 22:46:34,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:34,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:34,764 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 598.0) internal successors, (4186), 7 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:34,764 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 220 flow. Second operand 6 states and 1604 transitions. [2023-08-26 22:46:34,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 390 flow [2023-08-26 22:46:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:46:34,771 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 250 flow [2023-08-26 22:46:34,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2023-08-26 22:46:34,772 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-26 22:46:34,772 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 250 flow [2023-08-26 22:46:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 255.57142857142858) internal successors, (1789), 7 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:34,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:34,773 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:34,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 22:46:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:34,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:34,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1686847407, now seen corresponding path program 2 times [2023-08-26 22:46:34,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:34,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222943122] [2023-08-26 22:46:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:34,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 22:46:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:35,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222943122] [2023-08-26 22:46:35,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222943122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473965472] [2023-08-26 22:46:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:35,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:35,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:35,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:35,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:35,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:35,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:36,828 INFO L124 PetriNetUnfolderBase]: 21116/32790 cut-off events. [2023-08-26 22:46:36,828 INFO L125 PetriNetUnfolderBase]: For 898/898 co-relation queries the response was YES. [2023-08-26 22:46:36,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65203 conditions, 32790 events. 21116/32790 cut-off events. For 898/898 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 245372 event pairs, 15397 based on Foata normal form. 0/22436 useless extension candidates. Maximal degree in co-relation 65167. Up to 30676 conditions per place. [2023-08-26 22:46:36,968 INFO L140 encePairwiseOnDemand]: 595/598 looper letters, 96 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2023-08-26 22:46:36,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 482 flow [2023-08-26 22:46:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-26 22:46:36,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777034559643255 [2023-08-26 22:46:36,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-26 22:46:36,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-26 22:46:36,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:36,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-26 22:46:36,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:36,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:36,974 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:36,974 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 250 flow. Second operand 3 states and 857 transitions. [2023-08-26 22:46:36,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 482 flow [2023-08-26 22:46:36,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 468 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 22:46:36,977 INFO L231 Difference]: Finished difference. Result has 97 places, 90 transitions, 236 flow [2023-08-26 22:46:36,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2023-08-26 22:46:36,977 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 11 predicate places. [2023-08-26 22:46:36,977 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 236 flow [2023-08-26 22:46:36,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:36,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:36,978 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:46:36,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:36,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1840363106, now seen corresponding path program 1 times [2023-08-26 22:46:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755602264] [2023-08-26 22:46:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755602264] [2023-08-26 22:46:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755602264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:37,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137936904] [2023-08-26 22:46:37,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:37,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:37,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:37,033 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) [2023-08-26 22:46:37,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 22:46:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:37,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 22:46:37,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:37,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:46:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:46:37,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137936904] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:46:37,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:46:37,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 22:46:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390761342] [2023-08-26 22:46:37,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:46:37,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:46:37,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:46:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 22:46:37,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:37,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 236 flow. Second operand has 13 states, 13 states have (on average 255.53846153846155) internal successors, (3322), 13 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:37,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:37,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:37,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:39,421 INFO L124 PetriNetUnfolderBase]: 21098/32768 cut-off events. [2023-08-26 22:46:39,421 INFO L125 PetriNetUnfolderBase]: For 1034/1034 co-relation queries the response was YES. [2023-08-26 22:46:39,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65206 conditions, 32768 events. 21098/32768 cut-off events. For 1034/1034 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 244694 event pairs, 19728 based on Foata normal form. 6/22391 useless extension candidates. Maximal degree in co-relation 65152. Up to 30694 conditions per place. [2023-08-26 22:46:39,529 INFO L140 encePairwiseOnDemand]: 595/598 looper letters, 73 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2023-08-26 22:46:39,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 96 transitions, 440 flow [2023-08-26 22:46:39,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 22:46:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 22:46:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3137 transitions. [2023-08-26 22:46:39,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43715161649944256 [2023-08-26 22:46:39,549 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3137 transitions. [2023-08-26 22:46:39,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3137 transitions. [2023-08-26 22:46:39,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:39,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3137 transitions. [2023-08-26 22:46:39,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 261.4166666666667) internal successors, (3137), 12 states have internal predecessors, (3137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:39,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:39,575 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 598.0) internal successors, (7774), 13 states have internal predecessors, (7774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:39,575 INFO L175 Difference]: Start difference. First operand has 97 places, 90 transitions, 236 flow. Second operand 12 states and 3137 transitions. [2023-08-26 22:46:39,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 96 transitions, 440 flow [2023-08-26 22:46:39,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 96 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:46:39,579 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 315 flow [2023-08-26 22:46:39,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=315, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2023-08-26 22:46:39,581 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2023-08-26 22:46:39,581 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 315 flow [2023-08-26 22:46:39,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 255.53846153846155) internal successors, (3322), 13 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:39,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:39,582 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:39,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 22:46:39,786 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,SelfDestructingSolverStorable11 [2023-08-26 22:46:39,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:39,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash -26210882, now seen corresponding path program 2 times [2023-08-26 22:46:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322288740] [2023-08-26 22:46:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:46:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322288740] [2023-08-26 22:46:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322288740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:39,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:46:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30958993] [2023-08-26 22:46:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 22:46:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 22:46:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-26 22:46:39,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 598 [2023-08-26 22:46:39,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:39,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:39,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 598 [2023-08-26 22:46:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:42,643 INFO L124 PetriNetUnfolderBase]: 26298/42137 cut-off events. [2023-08-26 22:46:42,643 INFO L125 PetriNetUnfolderBase]: For 1385/1385 co-relation queries the response was YES. [2023-08-26 22:46:42,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84056 conditions, 42137 events. 26298/42137 cut-off events. For 1385/1385 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 345854 event pairs, 7963 based on Foata normal form. 0/29993 useless extension candidates. Maximal degree in co-relation 83978. Up to 25656 conditions per place. [2023-08-26 22:46:42,887 INFO L140 encePairwiseOnDemand]: 581/598 looper letters, 244 selfloop transitions, 25 changer transitions 0/281 dead transitions. [2023-08-26 22:46:42,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 281 transitions, 1276 flow [2023-08-26 22:46:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:46:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:46:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1808 transitions. [2023-08-26 22:46:42,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319159101767797 [2023-08-26 22:46:42,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1808 transitions. [2023-08-26 22:46:42,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1808 transitions. [2023-08-26 22:46:42,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:42,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1808 transitions. [2023-08-26 22:46:42,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 258.2857142857143) internal successors, (1808), 7 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:42,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 598.0) internal successors, (4784), 8 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:42,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 598.0) internal successors, (4784), 8 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:42,906 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 315 flow. Second operand 7 states and 1808 transitions. [2023-08-26 22:46:42,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 281 transitions, 1276 flow [2023-08-26 22:46:42,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 281 transitions, 1228 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 22:46:42,913 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 439 flow [2023-08-26 22:46:42,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2023-08-26 22:46:42,913 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 31 predicate places. [2023-08-26 22:46:42,914 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 439 flow [2023-08-26 22:46:42,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 221.5) internal successors, (1329), 6 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:42,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:42,914 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:42,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:46:42,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:42,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1263815448, now seen corresponding path program 1 times [2023-08-26 22:46:42,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:42,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721114337] [2023-08-26 22:46:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 22:46:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721114337] [2023-08-26 22:46:42,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721114337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:42,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:42,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:42,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183209374] [2023-08-26 22:46:42,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:42,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:42,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:42,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:42,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:42,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:42,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:42,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:42,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:45,661 INFO L124 PetriNetUnfolderBase]: 25386/40557 cut-off events. [2023-08-26 22:46:45,661 INFO L125 PetriNetUnfolderBase]: For 11028/11029 co-relation queries the response was YES. [2023-08-26 22:46:45,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93907 conditions, 40557 events. 25386/40557 cut-off events. For 11028/11029 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 329598 event pairs, 8461 based on Foata normal form. 0/31683 useless extension candidates. Maximal degree in co-relation 93848. Up to 34455 conditions per place. [2023-08-26 22:46:45,939 INFO L140 encePairwiseOnDemand]: 594/598 looper letters, 147 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2023-08-26 22:46:45,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 885 flow [2023-08-26 22:46:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-08-26 22:46:45,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866220735785953 [2023-08-26 22:46:45,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-08-26 22:46:45,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-08-26 22:46:45,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:45,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-08-26 22:46:45,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:45,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:45,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:45,945 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 439 flow. Second operand 3 states and 873 transitions. [2023-08-26 22:46:45,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 165 transitions, 885 flow [2023-08-26 22:46:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 165 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:46:45,972 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 461 flow [2023-08-26 22:46:45,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=461, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2023-08-26 22:46:45,973 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 33 predicate places. [2023-08-26 22:46:45,974 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 461 flow [2023-08-26 22:46:45,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:45,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:45,974 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:45,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 22:46:45,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:45,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:45,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1263815388, now seen corresponding path program 1 times [2023-08-26 22:46:45,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:45,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74572730] [2023-08-26 22:46:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:45,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:46:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:46,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74572730] [2023-08-26 22:46:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74572730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:46:46,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:46:46,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:46:46,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139915925] [2023-08-26 22:46:46,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:46:46,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:46:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:46,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:46:46,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:46:46,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 598 [2023-08-26 22:46:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:46,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:46,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 598 [2023-08-26 22:46:46,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:48,625 INFO L124 PetriNetUnfolderBase]: 24267/38684 cut-off events. [2023-08-26 22:46:48,625 INFO L125 PetriNetUnfolderBase]: For 15741/15745 co-relation queries the response was YES. [2023-08-26 22:46:48,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91859 conditions, 38684 events. 24267/38684 cut-off events. For 15741/15745 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 321085 event pairs, 3858 based on Foata normal form. 523/31064 useless extension candidates. Maximal degree in co-relation 91799. Up to 32956 conditions per place. [2023-08-26 22:46:48,840 INFO L140 encePairwiseOnDemand]: 595/598 looper letters, 150 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2023-08-26 22:46:48,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 164 transitions, 900 flow [2023-08-26 22:46:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-08-26 22:46:48,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-08-26 22:46:48,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-08-26 22:46:48,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-08-26 22:46:48,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:48,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-08-26 22:46:48,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:48,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:48,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 598.0) internal successors, (2392), 4 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:48,846 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 461 flow. Second operand 3 states and 871 transitions. [2023-08-26 22:46:48,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 164 transitions, 900 flow [2023-08-26 22:46:48,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 164 transitions, 894 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:46:48,861 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 456 flow [2023-08-26 22:46:48,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=456, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2023-08-26 22:46:48,861 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 33 predicate places. [2023-08-26 22:46:48,861 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 456 flow [2023-08-26 22:46:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:48,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:46:48,862 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:46:48,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:46:48,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:46:48,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:46:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash 618300344, now seen corresponding path program 1 times [2023-08-26 22:46:48,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:46:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474237449] [2023-08-26 22:46:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:46:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:46:48,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:46:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474237449] [2023-08-26 22:46:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474237449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:46:48,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339495414] [2023-08-26 22:46:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:46:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:46:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:46:48,992 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) [2023-08-26 22:46:48,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 22:46:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:46:49,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 22:46:49,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:46:49,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 22:46:49,134 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 22:46:49,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 22:46:49,147 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 22:46:49,409 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 22:46:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 22:46:49,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:46:55,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_327) |c_t_funThread1of2ForFork0_~p~0#1.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2023-08-26 22:46:55,483 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array Int Int)) (|t_funThread1of2ForFork0_~p~0#1.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_327) |c_~#a~0.base|) |t_funThread1of2ForFork0_~p~0#1.offset|) 0)) is different from false [2023-08-26 22:46:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-26 22:46:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339495414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:46:55,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:46:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-26 22:46:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187666215] [2023-08-26 22:46:55,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:46:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 22:46:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:46:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 22:46:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=81, Unknown=4, NotChecked=38, Total=156 [2023-08-26 22:46:55,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 598 [2023-08-26 22:46:55,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 456 flow. Second operand has 13 states, 13 states have (on average 222.3846153846154) internal successors, (2891), 13 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:55,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:46:55,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 598 [2023-08-26 22:46:55,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:47:11,595 WARN L234 SmtUtils]: Spent 16.02s on a formula simplification. DAG size of input: 23 DAG size of output: 18 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 22:47:13,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:15,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:17,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:19,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:21,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:23,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:25,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:27,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 22:47:30,444 INFO L124 PetriNetUnfolderBase]: 23245/37196 cut-off events. [2023-08-26 22:47:30,444 INFO L125 PetriNetUnfolderBase]: For 15723/15725 co-relation queries the response was YES. [2023-08-26 22:47:30,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86991 conditions, 37196 events. 23245/37196 cut-off events. For 15723/15725 co-relation queries the response was YES. Maximal size of possible extension queue 1525. Compared 294348 event pairs, 9173 based on Foata normal form. 350/29756 useless extension candidates. Maximal degree in co-relation 86930. Up to 24014 conditions per place. [2023-08-26 22:47:30,630 INFO L140 encePairwiseOnDemand]: 582/598 looper letters, 222 selfloop transitions, 29 changer transitions 0/263 dead transitions. [2023-08-26 22:47:30,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 263 transitions, 1356 flow [2023-08-26 22:47:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 22:47:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 22:47:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1995 transitions. [2023-08-26 22:47:30,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41701505016722407 [2023-08-26 22:47:30,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1995 transitions. [2023-08-26 22:47:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1995 transitions. [2023-08-26 22:47:30,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:47:30,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1995 transitions. [2023-08-26 22:47:30,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 249.375) internal successors, (1995), 8 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:30,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 598.0) internal successors, (5382), 9 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:30,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 598.0) internal successors, (5382), 9 states have internal predecessors, (5382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:30,640 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 456 flow. Second operand 8 states and 1995 transitions. [2023-08-26 22:47:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 263 transitions, 1356 flow [2023-08-26 22:47:30,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 263 transitions, 1344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:47:30,681 INFO L231 Difference]: Finished difference. Result has 127 places, 126 transitions, 583 flow [2023-08-26 22:47:30,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=598, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=583, PETRI_PLACES=127, PETRI_TRANSITIONS=126} [2023-08-26 22:47:30,681 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 41 predicate places. [2023-08-26 22:47:30,681 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 126 transitions, 583 flow [2023-08-26 22:47:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 222.3846153846154) internal successors, (2891), 13 states have internal predecessors, (2891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:30,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:47:30,682 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:47:30,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 22:47:30,887 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 [2023-08-26 22:47:30,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-26 22:47:30,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:47:30,888 INFO L85 PathProgramCache]: Analyzing trace with hash -948999207, now seen corresponding path program 1 times [2023-08-26 22:47:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:47:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830751001] [2023-08-26 22:47:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:47:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:47:30,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:47:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:47:30,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:47:30,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (15 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 27 remaining) [2023-08-26 22:47:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (10 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (5 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 27 remaining) [2023-08-26 22:47:30,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 27 remaining) [2023-08-26 22:47:30,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 22:47:30,939 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:47:30,940 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:47:30,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:47:30,970 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:47:30,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,222 INFO L124 PetriNetUnfolderBase]: 117/760 cut-off events. [2023-08-26 22:47:31,222 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-08-26 22:47:31,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 760 events. 117/760 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3593 event pairs, 1 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 524. Up to 16 conditions per place. [2023-08-26 22:47:31,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:47:31,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,232 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 337 places, 393 transitions, 816 flow [2023-08-26 22:47:31,293 INFO L124 PetriNetUnfolderBase]: 117/760 cut-off events. [2023-08-26 22:47:31,293 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-08-26 22:47:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 788 conditions, 760 events. 117/760 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3593 event pairs, 1 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 524. Up to 16 conditions per place. [2023-08-26 22:47:31,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 88800 [2023-08-26 22:47:34,713 INFO L134 LiptonReduction]: Checked pairs total: 144569 [2023-08-26 22:47:34,713 INFO L136 LiptonReduction]: Total number of compositions: 357 [2023-08-26 22:47:34,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:47:34,715 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;@55d08439, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:47:34,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-26 22:47:34,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:47:34,715 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 22:47:34,715 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:47:34,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:47:34,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 22:47:34,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-26 22:47:34,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:47:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 77225, now seen corresponding path program 1 times [2023-08-26 22:47:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:47:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358574422] [2023-08-26 22:47:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:34,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:47:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:47:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:34,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:47:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358574422] [2023-08-26 22:47:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358574422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:47:34,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:47:34,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:47:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275963528] [2023-08-26 22:47:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:47:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:47:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:47:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:47:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:47:34,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 750 [2023-08-26 22:47:34,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 151 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:34,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:47:34,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 750 [2023-08-26 22:47:34,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:48:26,885 INFO L124 PetriNetUnfolderBase]: 693058/944352 cut-off events. [2023-08-26 22:48:26,885 INFO L125 PetriNetUnfolderBase]: For 5640/5640 co-relation queries the response was YES. [2023-08-26 22:48:28,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862164 conditions, 944352 events. 693058/944352 cut-off events. For 5640/5640 co-relation queries the response was YES. Maximal size of possible extension queue 24546. Compared 7681709 event pairs, 669997 based on Foata normal form. 113354/753753 useless extension candidates. Maximal degree in co-relation 359805. Up to 914554 conditions per place. [2023-08-26 22:48:31,834 INFO L140 encePairwiseOnDemand]: 705/750 looper letters, 96 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-26 22:48:31,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 448 flow [2023-08-26 22:48:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:48:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:48:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1102 transitions. [2023-08-26 22:48:31,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48977777777777776 [2023-08-26 22:48:31,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1102 transitions. [2023-08-26 22:48:31,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1102 transitions. [2023-08-26 22:48:31,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:48:31,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1102 transitions. [2023-08-26 22:48:31,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.3333333333333) internal successors, (1102), 3 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:31,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:31,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:31,856 INFO L175 Difference]: Start difference. First operand has 110 places, 151 transitions, 332 flow. Second operand 3 states and 1102 transitions. [2023-08-26 22:48:31,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 448 flow [2023-08-26 22:48:31,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:48:31,862 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 264 flow [2023-08-26 22:48:31,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=750, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2023-08-26 22:48:31,862 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2023-08-26 22:48:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 264 flow [2023-08-26 22:48:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:31,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:48:31,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 22:48:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-26 22:48:31,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 29 more)] === [2023-08-26 22:48:31,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:48:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2398102, now seen corresponding path program 1 times [2023-08-26 22:48:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:48:31,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690036309] [2023-08-26 22:48:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:48:31,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:48:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:48:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:48:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:48:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690036309] [2023-08-26 22:48:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690036309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:48:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:48:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:48:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673493642] [2023-08-26 22:48:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:48:31,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:48:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:48:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:48:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:48:31,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 750 [2023-08-26 22:48:31,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:31,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:48:31,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 750 [2023-08-26 22:48:31,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand