/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:43:10,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:43:10,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 11:43:10,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:43:10,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:43:10,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:43:10,505 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:43:10,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:43:10,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:43:10,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:43:10,508 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:43:10,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:43:10,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:43:10,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:43:10,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:43:10,511 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:43:10,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:43:10,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:43:10,511 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:43:10,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:43:10,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:43:10,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:43:10,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:43:10,513 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:43:10,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:43:10,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:43:10,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:43:10,780 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:43:10,781 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:43:10,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-27 11:43:11,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:43:11,892 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:43:11,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-27 11:43:11,904 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0424882b7/2df8af3e50274312a376f5a96c6009e7/FLAG81f342811 [2023-08-27 11:43:11,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0424882b7/2df8af3e50274312a376f5a96c6009e7 [2023-08-27 11:43:11,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:43:11,914 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:43:11,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:43:11,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:43:11,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:43:11,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:43:11" (1/1) ... [2023-08-27 11:43:11,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105689b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:11, skipping insertion in model container [2023-08-27 11:43:11,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:43:11" (1/1) ... [2023-08-27 11:43:11,947 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:43:12,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:43:12,316 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:43:12,339 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:43:12,340 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:43:12,344 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-27 11:43:12,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:43:12,416 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:43:12,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12 WrapperNode [2023-08-27 11:43:12,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:43:12,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:43:12,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:43:12,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:43:12,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,474 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 222 [2023-08-27 11:43:12,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:43:12,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:43:12,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:43:12,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:43:12,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,495 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,500 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:43:12,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:43:12,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:43:12,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:43:12,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (1/1) ... [2023-08-27 11:43:12,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:43:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:12,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 11:43:12,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 11:43:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:43:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:43:12,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:43:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:43:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:43:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:43:12,577 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 11:43:12,664 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:43:12,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:43:12,942 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:43:12,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:43:12,948 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-27 11:43:12,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:43:12 BoogieIcfgContainer [2023-08-27 11:43:12,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:43:12,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:43:12,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:43:12,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:43:12,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:43:11" (1/3) ... [2023-08-27 11:43:12,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74702c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:43:12, skipping insertion in model container [2023-08-27 11:43:12,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:43:12" (2/3) ... [2023-08-27 11:43:12,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74702c1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:43:12, skipping insertion in model container [2023-08-27 11:43:12,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:43:12" (3/3) ... [2023-08-27 11:43:12,954 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-08-27 11:43:12,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:43:12,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-27 11:43:12,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:43:13,035 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:43:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 486 flow [2023-08-27 11:43:13,166 INFO L124 PetriNetUnfolderBase]: 52/338 cut-off events. [2023-08-27 11:43:13,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:43:13,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 338 events. 52/338 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1347 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-08-27 11:43:13,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 239 transitions, 486 flow [2023-08-27 11:43:13,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 236 transitions, 480 flow [2023-08-27 11:43:13,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:43:13,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 236 transitions, 480 flow [2023-08-27 11:43:13,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 236 transitions, 480 flow [2023-08-27 11:43:13,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 236 transitions, 480 flow [2023-08-27 11:43:13,228 INFO L124 PetriNetUnfolderBase]: 51/335 cut-off events. [2023-08-27 11:43:13,228 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:43:13,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 335 events. 51/335 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1334 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-08-27 11:43:13,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 18530 [2023-08-27 11:43:16,061 INFO L134 LiptonReduction]: Checked pairs total: 30048 [2023-08-27 11:43:16,061 INFO L136 LiptonReduction]: Total number of compositions: 223 [2023-08-27 11:43:16,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:43:16,073 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;@178399e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:43:16,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-27 11:43:16,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:43:16,075 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 11:43:16,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:43:16,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:16,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:43:16,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:16,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 30653, now seen corresponding path program 1 times [2023-08-27 11:43:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64426128] [2023-08-27 11:43:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:16,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:16,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64426128] [2023-08-27 11:43:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64426128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:16,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:43:16,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114459707] [2023-08-27 11:43:16,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:16,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:16,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:16,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 90 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:16,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:16,470 INFO L124 PetriNetUnfolderBase]: 650/1364 cut-off events. [2023-08-27 11:43:16,470 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:43:16,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 1364 events. 650/1364 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8149 event pairs, 550 based on Foata normal form. 170/1050 useless extension candidates. Maximal degree in co-relation 2521. Up to 1228 conditions per place. [2023-08-27 11:43:16,476 INFO L140 encePairwiseOnDemand]: 435/462 looper letters, 56 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-27 11:43:16,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 68 transitions, 260 flow [2023-08-27 11:43:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 678 transitions. [2023-08-27 11:43:16,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48917748917748916 [2023-08-27 11:43:16,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 678 transitions. [2023-08-27 11:43:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 678 transitions. [2023-08-27 11:43:16,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:16,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 678 transitions. [2023-08-27 11:43:16,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,506 INFO L175 Difference]: Start difference. First operand has 67 places, 90 transitions, 188 flow. Second operand 3 states and 678 transitions. [2023-08-27 11:43:16,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 68 transitions, 260 flow [2023-08-27 11:43:16,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:43:16,510 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 156 flow [2023-08-27 11:43:16,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-27 11:43:16,515 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2023-08-27 11:43:16,515 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 156 flow [2023-08-27 11:43:16,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:16,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 11:43:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:43:16,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:16,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash 952779, now seen corresponding path program 1 times [2023-08-27 11:43:16,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220398863] [2023-08-27 11:43:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:16,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:16,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220398863] [2023-08-27 11:43:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220398863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:16,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:16,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563981012] [2023-08-27 11:43:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:16,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:16,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:16,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:16,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:16,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:16,729 INFO L124 PetriNetUnfolderBase]: 650/1363 cut-off events. [2023-08-27 11:43:16,730 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:43:16,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1363 events. 650/1363 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8156 event pairs, 550 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 2593. Up to 1225 conditions per place. [2023-08-27 11:43:16,734 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 55 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-27 11:43:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 266 flow [2023-08-27 11:43:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-27 11:43:16,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2023-08-27 11:43:16,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-27 11:43:16,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-27 11:43:16,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:16,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-27 11:43:16,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,741 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 156 flow. Second operand 3 states and 651 transitions. [2023-08-27 11:43:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 266 flow [2023-08-27 11:43:16,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 262 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:43:16,743 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 152 flow [2023-08-27 11:43:16,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2023-08-27 11:43:16,744 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2023-08-27 11:43:16,744 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 152 flow [2023-08-27 11:43:16,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:16,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:43:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:43:16,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:16,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1678336275, now seen corresponding path program 1 times [2023-08-27 11:43:16,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622368316] [2023-08-27 11:43:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622368316] [2023-08-27 11:43:16,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622368316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:16,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213455033] [2023-08-27 11:43:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:16,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:16,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:16,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 11:43:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:16,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:43:16,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:16,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213455033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:16,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:16,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:43:16,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521651491] [2023-08-27 11:43:16,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:16,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:43:16,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:16,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:43:16,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:43:16,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:16,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:16,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:16,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:16,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:17,080 INFO L124 PetriNetUnfolderBase]: 650/1366 cut-off events. [2023-08-27 11:43:17,080 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:43:17,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 1366 events. 650/1366 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8144 event pairs, 550 based on Foata normal form. 3/887 useless extension candidates. Maximal degree in co-relation 2587. Up to 1227 conditions per place. [2023-08-27 11:43:17,084 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 55 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-08-27 11:43:17,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 284 flow [2023-08-27 11:43:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:43:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:43:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1251 transitions. [2023-08-27 11:43:17,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2023-08-27 11:43:17,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1251 transitions. [2023-08-27 11:43:17,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1251 transitions. [2023-08-27 11:43:17,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:17,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1251 transitions. [2023-08-27 11:43:17,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.5) internal successors, (1251), 6 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 462.0) internal successors, (3234), 7 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,094 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 462.0) internal successors, (3234), 7 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,094 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 152 flow. Second operand 6 states and 1251 transitions. [2023-08-27 11:43:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 284 flow [2023-08-27 11:43:17,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:17,095 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 184 flow [2023-08-27 11:43:17,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2023-08-27 11:43:17,096 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-27 11:43:17,096 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 184 flow [2023-08-27 11:43:17,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:17,097 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 11:43:17,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:17,297 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 [2023-08-27 11:43:17,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:17,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash -577646533, now seen corresponding path program 2 times [2023-08-27 11:43:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:17,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383424902] [2023-08-27 11:43:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:17,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 11:43:17,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:17,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383424902] [2023-08-27 11:43:17,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383424902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:17,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:17,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:17,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810695158] [2023-08-27 11:43:17,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:17,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:17,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:17,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:17,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:17,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:17,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:17,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:17,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:17,472 INFO L124 PetriNetUnfolderBase]: 600/1269 cut-off events. [2023-08-27 11:43:17,473 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:43:17,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2430 conditions, 1269 events. 600/1269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7659 event pairs, 220 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 2396. Up to 1091 conditions per place. [2023-08-27 11:43:17,477 INFO L140 encePairwiseOnDemand]: 457/462 looper letters, 80 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2023-08-27 11:43:17,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 92 transitions, 392 flow [2023-08-27 11:43:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-27 11:43:17,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2023-08-27 11:43:17,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-27 11:43:17,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-27 11:43:17,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:17,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-27 11:43:17,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,483 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 184 flow. Second operand 3 states and 675 transitions. [2023-08-27 11:43:17,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 92 transitions, 392 flow [2023-08-27 11:43:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 378 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:43:17,485 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 174 flow [2023-08-27 11:43:17,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-27 11:43:17,486 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-27 11:43:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 174 flow [2023-08-27 11:43:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:17,486 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:43:17,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:17,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash 615186087, now seen corresponding path program 1 times [2023-08-27 11:43:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542613332] [2023-08-27 11:43:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:17,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:17,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542613332] [2023-08-27 11:43:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542613332] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894403054] [2023-08-27 11:43:17,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:17,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:17,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:17,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 11:43:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:17,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:43:17,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:17,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:43:17,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894403054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:17,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:17,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 11:43:17,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096921769] [2023-08-27 11:43:17,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:17,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:43:17,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:43:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:43:17,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:17,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 174 flow. Second operand has 13 states, 13 states have (on average 199.6153846153846) internal successors, (2595), 13 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:17,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:17,862 INFO L124 PetriNetUnfolderBase]: 599/1252 cut-off events. [2023-08-27 11:43:17,862 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-27 11:43:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 1252 events. 599/1252 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7255 event pairs, 506 based on Foata normal form. 6/869 useless extension candidates. Maximal degree in co-relation 2429. Up to 1113 conditions per place. [2023-08-27 11:43:17,867 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 53 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2023-08-27 11:43:17,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 338 flow [2023-08-27 11:43:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:43:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:43:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2446 transitions. [2023-08-27 11:43:17,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411976911976912 [2023-08-27 11:43:17,872 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2446 transitions. [2023-08-27 11:43:17,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2446 transitions. [2023-08-27 11:43:17,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:17,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2446 transitions. [2023-08-27 11:43:17,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 203.83333333333334) internal successors, (2446), 12 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 462.0) internal successors, (6006), 13 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,882 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 462.0) internal successors, (6006), 13 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,882 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 174 flow. Second operand 12 states and 2446 transitions. [2023-08-27 11:43:17,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 338 flow [2023-08-27 11:43:17,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:17,885 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 254 flow [2023-08-27 11:43:17,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=254, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2023-08-27 11:43:17,885 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2023-08-27 11:43:17,885 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 254 flow [2023-08-27 11:43:17,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 199.6153846153846) internal successors, (2595), 13 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:17,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:17,886 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:17,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:18,090 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 [2023-08-27 11:43:18,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:18,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 245547367, now seen corresponding path program 2 times [2023-08-27 11:43:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937541800] [2023-08-27 11:43:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:18,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937541800] [2023-08-27 11:43:18,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937541800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:18,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:18,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:43:18,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373982778] [2023-08-27 11:43:18,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:43:18,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:18,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:43:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:43:18,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 462 [2023-08-27 11:43:18,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:18,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 462 [2023-08-27 11:43:18,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:18,665 INFO L124 PetriNetUnfolderBase]: 1051/2214 cut-off events. [2023-08-27 11:43:18,665 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-27 11:43:18,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4424 conditions, 2214 events. 1051/2214 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 14098 event pairs, 126 based on Foata normal form. 0/1503 useless extension candidates. Maximal degree in co-relation 4347. Up to 1175 conditions per place. [2023-08-27 11:43:18,674 INFO L140 encePairwiseOnDemand]: 451/462 looper letters, 157 selfloop transitions, 14 changer transitions 0/180 dead transitions. [2023-08-27 11:43:18,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 180 transitions, 826 flow [2023-08-27 11:43:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:43:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:43:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1178 transitions. [2023-08-27 11:43:18,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424963924963925 [2023-08-27 11:43:18,679 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1178 transitions. [2023-08-27 11:43:18,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1178 transitions. [2023-08-27 11:43:18,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:18,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1178 transitions. [2023-08-27 11:43:18,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.33333333333334) internal successors, (1178), 6 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 462.0) internal successors, (3234), 7 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,685 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 462.0) internal successors, (3234), 7 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,685 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 254 flow. Second operand 6 states and 1178 transitions. [2023-08-27 11:43:18,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 180 transitions, 826 flow [2023-08-27 11:43:18,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 180 transitions, 778 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-27 11:43:18,688 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 296 flow [2023-08-27 11:43:18,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-27 11:43:18,689 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 25 predicate places. [2023-08-27 11:43:18,689 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 296 flow [2023-08-27 11:43:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:18,689 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:43:18,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:18,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash 551208106, now seen corresponding path program 1 times [2023-08-27 11:43:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180814473] [2023-08-27 11:43:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180814473] [2023-08-27 11:43:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180814473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417601080] [2023-08-27 11:43:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:18,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:18,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:18,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 11:43:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:18,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:43:18,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417601080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:18,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:18,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-27 11:43:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009360123] [2023-08-27 11:43:18,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:43:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:43:18,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:43:18,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 462 [2023-08-27 11:43:18,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 296 flow. Second operand has 7 states, 7 states have (on average 200.85714285714286) internal successors, (1406), 7 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:18,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 462 [2023-08-27 11:43:18,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:18,890 INFO L124 PetriNetUnfolderBase]: 93/289 cut-off events. [2023-08-27 11:43:18,891 INFO L125 PetriNetUnfolderBase]: For 148/153 co-relation queries the response was YES. [2023-08-27 11:43:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 289 events. 93/289 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1191 event pairs, 3 based on Foata normal form. 43/295 useless extension candidates. Maximal degree in co-relation 742. Up to 188 conditions per place. [2023-08-27 11:43:18,892 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 71 selfloop transitions, 2 changer transitions 2/80 dead transitions. [2023-08-27 11:43:18,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 444 flow [2023-08-27 11:43:18,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:43:18,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:43:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 846 transitions. [2023-08-27 11:43:18,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2023-08-27 11:43:18,894 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 846 transitions. [2023-08-27 11:43:18,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 846 transitions. [2023-08-27 11:43:18,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:18,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 846 transitions. [2023-08-27 11:43:18,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.5) internal successors, (846), 4 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,899 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,899 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 296 flow. Second operand 4 states and 846 transitions. [2023-08-27 11:43:18,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 444 flow [2023-08-27 11:43:18,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:18,902 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 205 flow [2023-08-27 11:43:18,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2023-08-27 11:43:18,902 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -2 predicate places. [2023-08-27 11:43:18,902 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 205 flow [2023-08-27 11:43:18,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.85714285714286) internal successors, (1406), 7 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:18,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:18,903 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:18,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 11:43:19,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:19,109 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:19,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash -252155750, now seen corresponding path program 1 times [2023-08-27 11:43:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785824545] [2023-08-27 11:43:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:19,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785824545] [2023-08-27 11:43:19,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785824545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558229941] [2023-08-27 11:43:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:19,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:19,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 11:43:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:19,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:43:19,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:19,349 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 [2023-08-27 11:43:19,422 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:43:19,422 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 [2023-08-27 11:43:19,438 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 [2023-08-27 11:43:19,483 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 [2023-08-27 11:43:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:19,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:27,530 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_221 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_221) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2023-08-27 11:43:29,559 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_221 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_221) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2023-08-27 11:43:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-27 11:43:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558229941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:29,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 11:43:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861529607] [2023-08-27 11:43:29,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:29,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:43:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:43:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=80, Unknown=5, NotChecked=38, Total=156 [2023-08-27 11:43:29,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 462 [2023-08-27 11:43:29,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 205 flow. Second operand has 13 states, 13 states have (on average 171.6153846153846) internal successors, (2231), 13 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:29,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:29,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 462 [2023-08-27 11:43:29,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:43,740 WARN L234 SmtUtils]: Spent 12.03s on a formula simplification. DAG size of input: 25 DAG size of output: 20 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 11:43:45,743 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] [2023-08-27 11:43:47,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:43:49,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:43:51,764 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] [2023-08-27 11:43:51,918 INFO L124 PetriNetUnfolderBase]: 96/271 cut-off events. [2023-08-27 11:43:51,918 INFO L125 PetriNetUnfolderBase]: For 220/221 co-relation queries the response was YES. [2023-08-27 11:43:51,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 271 events. 96/271 cut-off events. For 220/221 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 865 event pairs, 8 based on Foata normal form. 2/233 useless extension candidates. Maximal degree in co-relation 702. Up to 115 conditions per place. [2023-08-27 11:43:51,919 INFO L140 encePairwiseOnDemand]: 452/462 looper letters, 62 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2023-08-27 11:43:51,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 429 flow [2023-08-27 11:43:51,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:43:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:43:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1246 transitions. [2023-08-27 11:43:51,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2023-08-27 11:43:51,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1246 transitions. [2023-08-27 11:43:51,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1246 transitions. [2023-08-27 11:43:51,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:51,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1246 transitions. [2023-08-27 11:43:51,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:51,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 462.0) internal successors, (3696), 8 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:51,929 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 462.0) internal successors, (3696), 8 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:51,929 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 205 flow. Second operand 7 states and 1246 transitions. [2023-08-27 11:43:51,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 429 flow [2023-08-27 11:43:51,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:51,931 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 267 flow [2023-08-27 11:43:51,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-27 11:43:51,933 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-08-27 11:43:51,933 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 267 flow [2023-08-27 11:43:51,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 171.6153846153846) internal successors, (2231), 13 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:51,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:51,934 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:51,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 11:43:52,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:52,138 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:52,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:52,139 INFO L85 PathProgramCache]: Analyzing trace with hash 773336586, now seen corresponding path program 1 times [2023-08-27 11:43:52,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:52,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345311216] [2023-08-27 11:43:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:52,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345311216] [2023-08-27 11:43:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345311216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:52,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054431209] [2023-08-27 11:43:52,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:52,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 462 [2023-08-27 11:43:52,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:52,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 462 [2023-08-27 11:43:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:52,244 INFO L124 PetriNetUnfolderBase]: 121/359 cut-off events. [2023-08-27 11:43:52,244 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2023-08-27 11:43:52,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 359 events. 121/359 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1413 event pairs, 68 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 996. Up to 224 conditions per place. [2023-08-27 11:43:52,246 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 67 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 11:43:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 472 flow [2023-08-27 11:43:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 645 transitions. [2023-08-27 11:43:52,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2023-08-27 11:43:52,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 645 transitions. [2023-08-27 11:43:52,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 645 transitions. [2023-08-27 11:43:52,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:52,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 645 transitions. [2023-08-27 11:43:52,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,251 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 267 flow. Second operand 3 states and 645 transitions. [2023-08-27 11:43:52,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 472 flow [2023-08-27 11:43:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 457 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:43:52,253 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 268 flow [2023-08-27 11:43:52,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2023-08-27 11:43:52,254 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-08-27 11:43:52,254 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 268 flow [2023-08-27 11:43:52,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:52,255 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:52,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:43:52,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:52,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:52,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1785630833, now seen corresponding path program 1 times [2023-08-27 11:43:52,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:52,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253317242] [2023-08-27 11:43:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:52,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253317242] [2023-08-27 11:43:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253317242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:43:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770725126] [2023-08-27 11:43:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:43:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:43:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:43:52,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 462 [2023-08-27 11:43:52,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 164.625) internal successors, (1317), 8 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:52,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 462 [2023-08-27 11:43:52,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:52,689 INFO L124 PetriNetUnfolderBase]: 132/406 cut-off events. [2023-08-27 11:43:52,689 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2023-08-27 11:43:52,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 406 events. 132/406 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1714 event pairs, 2 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 1141. Up to 140 conditions per place. [2023-08-27 11:43:52,691 INFO L140 encePairwiseOnDemand]: 450/462 looper letters, 73 selfloop transitions, 22 changer transitions 0/99 dead transitions. [2023-08-27 11:43:52,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 99 transitions, 605 flow [2023-08-27 11:43:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:43:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:43:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1872 transitions. [2023-08-27 11:43:52,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36835891381345925 [2023-08-27 11:43:52,696 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1872 transitions. [2023-08-27 11:43:52,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1872 transitions. [2023-08-27 11:43:52,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:52,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1872 transitions. [2023-08-27 11:43:52,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 170.1818181818182) internal successors, (1872), 11 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 462.0) internal successors, (5544), 12 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,704 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 462.0) internal successors, (5544), 12 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,704 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 268 flow. Second operand 11 states and 1872 transitions. [2023-08-27 11:43:52,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 99 transitions, 605 flow [2023-08-27 11:43:52,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:43:52,708 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 386 flow [2023-08-27 11:43:52,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2023-08-27 11:43:52,708 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-08-27 11:43:52,709 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 386 flow [2023-08-27 11:43:52,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 164.625) internal successors, (1317), 8 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:52,709 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:52,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:43:52,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:52,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1785630791, now seen corresponding path program 1 times [2023-08-27 11:43:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:52,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633423555] [2023-08-27 11:43:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:52,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:52,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633423555] [2023-08-27 11:43:52,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633423555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:52,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:52,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:43:52,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198218951] [2023-08-27 11:43:52,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:52,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:43:52,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:52,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:43:52,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:43:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 462 [2023-08-27 11:43:52,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 462 [2023-08-27 11:43:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:52,896 INFO L124 PetriNetUnfolderBase]: 126/431 cut-off events. [2023-08-27 11:43:52,896 INFO L125 PetriNetUnfolderBase]: For 726/728 co-relation queries the response was YES. [2023-08-27 11:43:52,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 431 events. 126/431 cut-off events. For 726/728 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1967 event pairs, 26 based on Foata normal form. 10/419 useless extension candidates. Maximal degree in co-relation 1389. Up to 165 conditions per place. [2023-08-27 11:43:52,898 INFO L140 encePairwiseOnDemand]: 452/462 looper letters, 56 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2023-08-27 11:43:52,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 637 flow [2023-08-27 11:43:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:43:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:43:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2023-08-27 11:43:52,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012987012987013 [2023-08-27 11:43:52,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2023-08-27 11:43:52,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2023-08-27 11:43:52,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:52,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2023-08-27 11:43:52,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 462.0) internal successors, (2772), 6 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,905 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 462.0) internal successors, (2772), 6 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,905 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 386 flow. Second operand 5 states and 927 transitions. [2023-08-27 11:43:52,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 637 flow [2023-08-27 11:43:52,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 597 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-27 11:43:52,909 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 507 flow [2023-08-27 11:43:52,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2023-08-27 11:43:52,909 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 20 predicate places. [2023-08-27 11:43:52,909 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 507 flow [2023-08-27 11:43:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:52,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:52,910 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:52,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:43:52,910 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:52,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:52,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1892774060, now seen corresponding path program 1 times [2023-08-27 11:43:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:52,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756257134] [2023-08-27 11:43:52,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:53,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:53,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756257134] [2023-08-27 11:43:53,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756257134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:53,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030164041] [2023-08-27 11:43:53,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:53,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:53,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:53,213 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:53,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 11:43:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:53,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:43:53,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:53,309 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 [2023-08-27 11:43:53,360 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:43:53,360 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 [2023-08-27 11:43:53,375 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 [2023-08-27 11:43:53,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-27 11:43:53,478 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 16 treesize of output 18 [2023-08-27 11:43:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:53,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:53,548 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (v_ArrVal_402 Int)) (or (< v_ArrVal_402 (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-27 11:43:53,559 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-27 11:43:53,584 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_402 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_402 (+ (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-27 11:43:53,613 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_403 (Array Int Int)) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_400 (Array Int Int)) (v_ArrVal_402 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_400))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) |c_~#cache~0.base|) |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_402 (+ (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-27 11:43:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-27 11:43:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030164041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:53,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-08-27 11:43:53,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106333586] [2023-08-27 11:43:53,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:53,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:43:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:43:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=246, Unknown=7, NotChecked=140, Total=462 [2023-08-27 11:43:53,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 462 [2023-08-27 11:43:53,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 507 flow. Second operand has 22 states, 22 states have (on average 152.1818181818182) internal successors, (3348), 22 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:53,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:53,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 462 [2023-08-27 11:43:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:54,197 INFO L124 PetriNetUnfolderBase]: 131/438 cut-off events. [2023-08-27 11:43:54,197 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2023-08-27 11:43:54,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 438 events. 131/438 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1964 event pairs, 25 based on Foata normal form. 4/418 useless extension candidates. Maximal degree in co-relation 1585. Up to 148 conditions per place. [2023-08-27 11:43:54,200 INFO L140 encePairwiseOnDemand]: 451/462 looper letters, 83 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2023-08-27 11:43:54,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 105 transitions, 840 flow [2023-08-27 11:43:54,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:43:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:43:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1573 transitions. [2023-08-27 11:43:54,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3404761904761905 [2023-08-27 11:43:54,204 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1573 transitions. [2023-08-27 11:43:54,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1573 transitions. [2023-08-27 11:43:54,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:54,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1573 transitions. [2023-08-27 11:43:54,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 157.3) internal successors, (1573), 10 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:54,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 462.0) internal successors, (5082), 11 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:54,211 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 462.0) internal successors, (5082), 11 states have internal predecessors, (5082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:54,211 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 507 flow. Second operand 10 states and 1573 transitions. [2023-08-27 11:43:54,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 105 transitions, 840 flow [2023-08-27 11:43:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 824 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-27 11:43:54,216 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 596 flow [2023-08-27 11:43:54,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=596, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2023-08-27 11:43:54,216 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 33 predicate places. [2023-08-27 11:43:54,216 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 596 flow [2023-08-27 11:43:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.1818181818182) internal successors, (3348), 22 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:54,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:54,217 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:54,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:54,421 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 [2023-08-27 11:43:54,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:54,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1892774102, now seen corresponding path program 1 times [2023-08-27 11:43:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:54,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194256178] [2023-08-27 11:43:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:54,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194256178] [2023-08-27 11:43:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194256178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959179850] [2023-08-27 11:43:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:54,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:54,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 11:43:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:54,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:43:54,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:54,722 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:43:54,722 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 [2023-08-27 11:43:54,773 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 11 treesize of output 7 [2023-08-27 11:43:54,797 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 14 treesize of output 16 [2023-08-27 11:43:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:54,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:43:54,847 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:43:54,847 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-27 11:43:54,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-08-27 11:43:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959179850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:43:54,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:43:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 11:43:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348884451] [2023-08-27 11:43:54,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:43:54,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:43:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:43:54,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=306, Unknown=3, NotChecked=0, Total=380 [2023-08-27 11:43:54,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 462 [2023-08-27 11:43:54,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 596 flow. Second operand has 20 states, 20 states have (on average 165.25) internal successors, (3305), 20 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:54,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:54,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 462 [2023-08-27 11:43:54,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:55,211 INFO L124 PetriNetUnfolderBase]: 125/429 cut-off events. [2023-08-27 11:43:55,211 INFO L125 PetriNetUnfolderBase]: For 1247/1249 co-relation queries the response was YES. [2023-08-27 11:43:55,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 429 events. 125/429 cut-off events. For 1247/1249 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1939 event pairs, 32 based on Foata normal form. 3/406 useless extension candidates. Maximal degree in co-relation 1596. Up to 105 conditions per place. [2023-08-27 11:43:55,213 INFO L140 encePairwiseOnDemand]: 451/462 looper letters, 75 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2023-08-27 11:43:55,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 901 flow [2023-08-27 11:43:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:43:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:43:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2024 transitions. [2023-08-27 11:43:55,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-08-27 11:43:55,217 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2024 transitions. [2023-08-27 11:43:55,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2024 transitions. [2023-08-27 11:43:55,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:55,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2024 transitions. [2023-08-27 11:43:55,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 168.66666666666666) internal successors, (2024), 12 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 462.0) internal successors, (6006), 13 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,225 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 462.0) internal successors, (6006), 13 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,225 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 596 flow. Second operand 12 states and 2024 transitions. [2023-08-27 11:43:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 901 flow [2023-08-27 11:43:55,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 871 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 11:43:55,230 INFO L231 Difference]: Finished difference. Result has 106 places, 78 transitions, 631 flow [2023-08-27 11:43:55,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=631, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2023-08-27 11:43:55,230 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2023-08-27 11:43:55,230 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 631 flow [2023-08-27 11:43:55,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 165.25) internal successors, (3305), 20 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:55,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:55,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 11:43:55,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:55,435 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:55,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:55,436 INFO L85 PathProgramCache]: Analyzing trace with hash -675226188, now seen corresponding path program 1 times [2023-08-27 11:43:55,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:55,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413857429] [2023-08-27 11:43:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413857429] [2023-08-27 11:43:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413857429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772650890] [2023-08-27 11:43:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:55,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:55,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:55,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:55,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 11:43:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:55,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 11:43:55,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:55,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:43:55,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772650890] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:55,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:43:55,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 11:43:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88181169] [2023-08-27 11:43:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:43:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:43:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:43:55,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 462 [2023-08-27 11:43:55,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 631 flow. Second operand has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:55,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 462 [2023-08-27 11:43:55,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:55,657 INFO L124 PetriNetUnfolderBase]: 113/401 cut-off events. [2023-08-27 11:43:55,657 INFO L125 PetriNetUnfolderBase]: For 1274/1286 co-relation queries the response was YES. [2023-08-27 11:43:55,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 401 events. 113/401 cut-off events. For 1274/1286 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1776 event pairs, 22 based on Foata normal form. 3/391 useless extension candidates. Maximal degree in co-relation 1530. Up to 222 conditions per place. [2023-08-27 11:43:55,659 INFO L140 encePairwiseOnDemand]: 459/462 looper letters, 99 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-27 11:43:55,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 1084 flow [2023-08-27 11:43:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:43:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:43:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 841 transitions. [2023-08-27 11:43:55,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550865800865801 [2023-08-27 11:43:55,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 841 transitions. [2023-08-27 11:43:55,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 841 transitions. [2023-08-27 11:43:55,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:55,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 841 transitions. [2023-08-27 11:43:55,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.25) internal successors, (841), 4 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,664 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,664 INFO L175 Difference]: Start difference. First operand has 106 places, 78 transitions, 631 flow. Second operand 4 states and 841 transitions. [2023-08-27 11:43:55,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 1084 flow [2023-08-27 11:43:55,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 1033 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-27 11:43:55,669 INFO L231 Difference]: Finished difference. Result has 101 places, 77 transitions, 595 flow [2023-08-27 11:43:55,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2023-08-27 11:43:55,669 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2023-08-27 11:43:55,669 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 595 flow [2023-08-27 11:43:55,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:55,670 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:55,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 11:43:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:55,881 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:55,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -675226114, now seen corresponding path program 1 times [2023-08-27 11:43:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445257583] [2023-08-27 11:43:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:55,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:43:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445257583] [2023-08-27 11:43:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445257583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:43:55,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:43:55,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:43:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808951334] [2023-08-27 11:43:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:43:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:43:55,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:43:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:43:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:43:55,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 462 [2023-08-27 11:43:55,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 595 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:43:55,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 462 [2023-08-27 11:43:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:43:55,962 INFO L124 PetriNetUnfolderBase]: 107/385 cut-off events. [2023-08-27 11:43:55,963 INFO L125 PetriNetUnfolderBase]: For 1064/1082 co-relation queries the response was YES. [2023-08-27 11:43:55,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1508 conditions, 385 events. 107/385 cut-off events. For 1064/1082 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1675 event pairs, 21 based on Foata normal form. 6/389 useless extension candidates. Maximal degree in co-relation 1438. Up to 270 conditions per place. [2023-08-27 11:43:55,965 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 67 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2023-08-27 11:43:55,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 81 transitions, 790 flow [2023-08-27 11:43:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:43:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:43:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-27 11:43:55,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45165945165945165 [2023-08-27 11:43:55,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-27 11:43:55,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-27 11:43:55,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:43:55,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-27 11:43:55,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,969 INFO L175 Difference]: Start difference. First operand has 101 places, 77 transitions, 595 flow. Second operand 3 states and 626 transitions. [2023-08-27 11:43:55,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 81 transitions, 790 flow [2023-08-27 11:43:55,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 81 transitions, 787 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:43:55,973 INFO L231 Difference]: Finished difference. Result has 100 places, 76 transitions, 606 flow [2023-08-27 11:43:55,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2023-08-27 11:43:55,973 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 33 predicate places. [2023-08-27 11:43:55,973 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 606 flow [2023-08-27 11:43:55,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:43:55,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:43:55,974 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:43:55,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:43:55,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:43:55,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:43:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1005929732, now seen corresponding path program 1 times [2023-08-27 11:43:55,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:43:55,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120950352] [2023-08-27 11:43:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:55,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:43:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:43:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:43:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120950352] [2023-08-27 11:43:56,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120950352] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:43:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113750421] [2023-08-27 11:43:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:43:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:43:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:43:56,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:43:56,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 11:43:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:43:56,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-27 11:43:56,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:43:56,381 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 [2023-08-27 11:43:56,417 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:43:56,418 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 [2023-08-27 11:43:56,429 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 [2023-08-27 11:43:56,485 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-27 11:43:56,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-27 11:43:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:43:56,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:44:02,652 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_695 (Array Int Int))) (= ((as const (Array Int Int)) 0) (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_695) |c_~#cache~0.base|))) is different from false [2023-08-27 11:44:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:44:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113750421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:44:02,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:44:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-08-27 11:44:02,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399505679] [2023-08-27 11:44:02,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:44:02,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-27 11:44:02,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:44:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-27 11:44:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=373, Unknown=1, NotChecked=40, Total=506 [2023-08-27 11:44:02,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 462 [2023-08-27 11:44:02,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 606 flow. Second operand has 23 states, 23 states have (on average 157.56521739130434) internal successors, (3624), 23 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:02,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:44:02,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 462 [2023-08-27 11:44:02,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:44:03,258 INFO L124 PetriNetUnfolderBase]: 109/403 cut-off events. [2023-08-27 11:44:03,258 INFO L125 PetriNetUnfolderBase]: For 1125/1127 co-relation queries the response was YES. [2023-08-27 11:44:03,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 403 events. 109/403 cut-off events. For 1125/1127 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1816 event pairs, 12 based on Foata normal form. 12/415 useless extension candidates. Maximal degree in co-relation 1518. Up to 93 conditions per place. [2023-08-27 11:44:03,260 INFO L140 encePairwiseOnDemand]: 447/462 looper letters, 75 selfloop transitions, 26 changer transitions 11/116 dead transitions. [2023-08-27 11:44:03,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 116 transitions, 1051 flow [2023-08-27 11:44:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:44:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:44:03,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2091 transitions. [2023-08-27 11:44:03,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34815184815184813 [2023-08-27 11:44:03,269 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2091 transitions. [2023-08-27 11:44:03,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2091 transitions. [2023-08-27 11:44:03,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:44:03,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2091 transitions. [2023-08-27 11:44:03,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.84615384615384) internal successors, (2091), 13 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:03,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 462.0) internal successors, (6468), 14 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:03,279 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 462.0) internal successors, (6468), 14 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:03,279 INFO L175 Difference]: Start difference. First operand has 100 places, 76 transitions, 606 flow. Second operand 13 states and 2091 transitions. [2023-08-27 11:44:03,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 116 transitions, 1051 flow [2023-08-27 11:44:03,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 116 transitions, 1035 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:44:03,285 INFO L231 Difference]: Finished difference. Result has 119 places, 78 transitions, 726 flow [2023-08-27 11:44:03,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=726, PETRI_PLACES=119, PETRI_TRANSITIONS=78} [2023-08-27 11:44:03,285 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 52 predicate places. [2023-08-27 11:44:03,285 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 78 transitions, 726 flow [2023-08-27 11:44:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 157.56521739130434) internal successors, (3624), 23 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:03,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:44:03,286 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:44:03,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 11:44:03,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 11:44:03,493 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2023-08-27 11:44:03,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:44:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1387150251, now seen corresponding path program 1 times [2023-08-27 11:44:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:44:03,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003645190] [2023-08-27 11:44:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:44:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:44:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:44:04,519 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:44:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:44:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003645190] [2023-08-27 11:44:04,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003645190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:44:04,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088055748] [2023-08-27 11:44:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:44:04,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:44:04,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:44:04,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:44:04,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 11:44:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:44:04,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-27 11:44:04,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:44:04,632 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 [2023-08-27 11:44:04,688 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:44:04,688 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 [2023-08-27 11:44:04,710 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 [2023-08-27 11:44:04,801 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-08-27 11:44:04,839 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 21 treesize of output 23 [2023-08-27 11:44:04,892 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-27 11:44:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:44:04,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:44:19,014 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int)) (= (select (select (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~mem37#1| (- 1)))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|) 0)) is different from false [2023-08-27 11:44:21,018 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int)) (= (select (select (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|) 0)) is different from false [2023-08-27 11:44:21,459 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_798 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_798))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|) 0)) is different from false [2023-08-27 11:44:21,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_798 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int)) (= (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ |c_t_funThread1of1ForFork0_cache_entry_addref_#t~post35#1| 1))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_798))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|) 0)) is different from false [2023-08-27 11:44:21,479 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_798 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int)) (= 0 (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse2 (select |c_#memory_int| |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (select .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1)))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_798))) (store .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base| (let ((.cse1 (select .cse0 |c_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.base|))) (store .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse1 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))))) |c_~#cache~0.base|) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|))) is different from false [2023-08-27 11:44:29,620 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_798 (Array Int Int)) (|v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83| Int) (|t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_795 (Array Int Int))) (= (select (let ((.cse0 (select (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_795))) (store .cse1 |c_~#cache~0.base| (let ((.cse2 (select .cse1 |c_~#cache~0.base|))) (store .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (select .cse2 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|) 1))))) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_798) |c_~#cache~0.base|))) (store .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset| (+ (- 1) (select .cse0 |t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset|)))) |v_t_funThread1of1ForFork0_cache_entry_addref_~entry#1.offset_83|) 0)) is different from false [2023-08-27 11:44:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 2 not checked. [2023-08-27 11:44:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088055748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:44:29,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:44:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 30 [2023-08-27 11:44:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407709611] [2023-08-27 11:44:29,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:44:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-27 11:44:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:44:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-27 11:44:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=552, Unknown=15, NotChecked=318, Total=992 [2023-08-27 11:44:29,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 462 [2023-08-27 11:44:29,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 78 transitions, 726 flow. Second operand has 32 states, 32 states have (on average 151.15625) internal successors, (4837), 32 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:29,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:44:29,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 462 [2023-08-27 11:44:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:45:22,479 WARN L234 SmtUtils]: Spent 52.09s on a formula simplification. DAG size of input: 60 DAG size of output: 33 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 11:45:24,537 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] [2023-08-27 11:45:26,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:45:28,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:30,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:32,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:34,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:36,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:38,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:40,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:42,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:45:44,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:46,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:48,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:50,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:52,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:54,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:45:56,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:45:58,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:00,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:02,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:04,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:06,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:08,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:10,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:46:12,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:14,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:16,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:18,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:20,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:22,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:23,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:46:25,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:28,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:30,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:31,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:33,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:46:35,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:36,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:37,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:46:38,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:47:47,633 WARN L234 SmtUtils]: Spent 1.13m on a formula simplification. DAG size of input: 57 DAG size of output: 33 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 11:47:49,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:47:51,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:47:53,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:47:55,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:47:57,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:47:59,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:01,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:03,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:05,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:48:07,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:09,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:11,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:13,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:15,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:17,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:19,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:48:21,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:23,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:25,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:27,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:29,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:31,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:33,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:48:35,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:37,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:39,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:41,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:43,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:45,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:48:47,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:49,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:51,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:53,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:55,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:57,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:48:59,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:01,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:49:04,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:06,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:08,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:10,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:12,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:14,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:16,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:49:18,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:20,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:22,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:24,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:26,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:28,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:30,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:49:32,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:34,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:36,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:38,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:40,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:42,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:49:44,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:46,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:48,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:50,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:52,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:54,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:49:56,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-27 11:49:58,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:50:00,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:50:02,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:50:04,330 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] [2023-08-27 11:50:09,238 INFO L124 PetriNetUnfolderBase]: 132/495 cut-off events. [2023-08-27 11:50:09,239 INFO L125 PetriNetUnfolderBase]: For 2270/2270 co-relation queries the response was YES. [2023-08-27 11:50:09,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 495 events. 132/495 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2372 event pairs, 14 based on Foata normal form. 11/506 useless extension candidates. Maximal degree in co-relation 2124. Up to 89 conditions per place. [2023-08-27 11:50:09,241 INFO L140 encePairwiseOnDemand]: 445/462 looper letters, 0 selfloop transitions, 0 changer transitions 201/201 dead transitions. [2023-08-27 11:50:09,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 201 transitions, 2090 flow [2023-08-27 11:50:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-27 11:50:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-27 11:50:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4761 transitions. [2023-08-27 11:50:09,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3324256388772518 [2023-08-27 11:50:09,247 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4761 transitions. [2023-08-27 11:50:09,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4761 transitions. [2023-08-27 11:50:09,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:09,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4761 transitions. [2023-08-27 11:50:09,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 153.58064516129033) internal successors, (4761), 31 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:09,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 462.0) internal successors, (14784), 32 states have internal predecessors, (14784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:09,262 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 462.0) internal successors, (14784), 32 states have internal predecessors, (14784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:09,262 INFO L175 Difference]: Start difference. First operand has 119 places, 78 transitions, 726 flow. Second operand 31 states and 4761 transitions. [2023-08-27 11:50:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 201 transitions, 2090 flow [2023-08-27 11:50:09,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1861 flow, removed 50 selfloop flow, removed 14 redundant places. [2023-08-27 11:50:09,270 INFO L231 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2023-08-27 11:50:09,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2023-08-27 11:50:09,270 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 62 predicate places. [2023-08-27 11:50:09,270 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2023-08-27 11:50:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 151.15625) internal successors, (4837), 32 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:09,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 27 remaining) [2023-08-27 11:50:09,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 27 remaining) [2023-08-27 11:50:09,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 27 remaining) [2023-08-27 11:50:09,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 27 remaining) [2023-08-27 11:50:09,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONASSERT (19 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (14 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 27 remaining) [2023-08-27 11:50:09,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (1 of 27 remaining) [2023-08-27 11:50:09,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 27 remaining) [2023-08-27 11:50:09,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 11:50:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 11:50:09,479 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:09,481 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:50:09,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 486 flow [2023-08-27 11:50:09,506 INFO L124 PetriNetUnfolderBase]: 52/338 cut-off events. [2023-08-27 11:50:09,506 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:50:09,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 338 events. 52/338 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1347 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-08-27 11:50:09,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 239 transitions, 486 flow [2023-08-27 11:50:09,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 228 transitions, 461 flow [2023-08-27 11:50:09,509 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:50:09,509 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 228 transitions, 461 flow [2023-08-27 11:50:09,509 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 228 transitions, 461 flow [2023-08-27 11:50:09,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 228 transitions, 461 flow [2023-08-27 11:50:09,524 INFO L124 PetriNetUnfolderBase]: 51/327 cut-off events. [2023-08-27 11:50:09,524 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:50:09,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 327 events. 51/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1252 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 193. Up to 8 conditions per place. [2023-08-27 11:50:09,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 18530 [2023-08-27 11:50:12,577 INFO L134 LiptonReduction]: Checked pairs total: 29631 [2023-08-27 11:50:12,577 INFO L136 LiptonReduction]: Total number of compositions: 213 [2023-08-27 11:50:12,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:50:12,578 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;@178399e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:50:12,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:50:12,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:50:12,580 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-08-27 11:50:12,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:50:12,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:12,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-27 11:50:12,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:50:12,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1244025087, now seen corresponding path program 1 times [2023-08-27 11:50:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055655909] [2023-08-27 11:50:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:12,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055655909] [2023-08-27 11:50:12,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055655909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:12,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:12,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:50:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550321323] [2023-08-27 11:50:12,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:12,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:12,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:12,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 452 [2023-08-27 11:50:12,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 85 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:12,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 452 [2023-08-27 11:50:12,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:12,742 INFO L124 PetriNetUnfolderBase]: 650/1360 cut-off events. [2023-08-27 11:50:12,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:50:12,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1360 events. 650/1360 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8112 event pairs, 550 based on Foata normal form. 170/1048 useless extension candidates. Maximal degree in co-relation 2521. Up to 1224 conditions per place. [2023-08-27 11:50:12,748 INFO L140 encePairwiseOnDemand]: 427/452 looper letters, 31 selfloop transitions, 2 changer transitions 26/64 dead transitions. [2023-08-27 11:50:12,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 241 flow [2023-08-27 11:50:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2023-08-27 11:50:12,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4948377581120944 [2023-08-27 11:50:12,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2023-08-27 11:50:12,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2023-08-27 11:50:12,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:12,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2023-08-27 11:50:12,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 452.0) internal successors, (1808), 4 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,752 INFO L175 Difference]: Start difference. First operand has 62 places, 85 transitions, 175 flow. Second operand 3 states and 671 transitions. [2023-08-27 11:50:12,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 241 flow [2023-08-27 11:50:12,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 241 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:50:12,753 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 91 flow [2023-08-27 11:50:12,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2023-08-27 11:50:12,753 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2023-08-27 11:50:12,753 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 91 flow [2023-08-27 11:50:12,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:12,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:12,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:50:12,754 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:50:12,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1791498115, now seen corresponding path program 1 times [2023-08-27 11:50:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586196421] [2023-08-27 11:50:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:12,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586196421] [2023-08-27 11:50:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586196421] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398681866] [2023-08-27 11:50:12,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:12,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:12,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:12,777 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:12,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 11:50:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:12,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:50:12,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:12,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:50:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:12,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398681866] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:50:12,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:50:12,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:50:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807011972] [2023-08-27 11:50:12,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:50:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:50:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:50:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:50:12,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 452 [2023-08-27 11:50:12,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 91 flow. Second operand has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:12,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 452 [2023-08-27 11:50:12,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:12,945 INFO L124 PetriNetUnfolderBase]: 123/289 cut-off events. [2023-08-27 11:50:12,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:50:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 289 events. 123/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1132 event pairs, 110 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 557. Up to 260 conditions per place. [2023-08-27 11:50:12,947 INFO L140 encePairwiseOnDemand]: 449/452 looper letters, 31 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-08-27 11:50:12,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 175 flow [2023-08-27 11:50:12,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:50:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:50:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2023-08-27 11:50:12,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524336283185841 [2023-08-27 11:50:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2023-08-27 11:50:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2023-08-27 11:50:12,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:12,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2023-08-27 11:50:12,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 452.0) internal successors, (3164), 7 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,981 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 91 flow. Second operand 6 states and 1227 transitions. [2023-08-27 11:50:12,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 175 flow [2023-08-27 11:50:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 171 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:50:12,982 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 123 flow [2023-08-27 11:50:12,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-27 11:50:12,983 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-08-27 11:50:12,983 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 123 flow [2023-08-27 11:50:12,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 199.57142857142858) internal successors, (1397), 7 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:12,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:12,983 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-27 11:50:13,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 11:50:13,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:13,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:50:13,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1301233791, now seen corresponding path program 2 times [2023-08-27 11:50:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:13,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733474529] [2023-08-27 11:50:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733474529] [2023-08-27 11:50:13,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733474529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231168480] [2023-08-27 11:50:13,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:50:13,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:13,240 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:13,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 11:50:13,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:50:13,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:50:13,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:50:13,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:13,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:50:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 11:50:13,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231168480] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:50:13,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:50:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 11:50:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638680024] [2023-08-27 11:50:13,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:50:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:50:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:50:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:50:13,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 452 [2023-08-27 11:50:13,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 123 flow. Second operand has 13 states, 13 states have (on average 199.30769230769232) internal successors, (2591), 13 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:13,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 452 [2023-08-27 11:50:13,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:13,465 INFO L124 PetriNetUnfolderBase]: 123/295 cut-off events. [2023-08-27 11:50:13,465 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 11:50:13,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 295 events. 123/295 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1132 event pairs, 110 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 548. Up to 260 conditions per place. [2023-08-27 11:50:13,466 INFO L140 encePairwiseOnDemand]: 449/452 looper letters, 31 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-08-27 11:50:13,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 243 flow [2023-08-27 11:50:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:50:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:50:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2424 transitions. [2023-08-27 11:50:13,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469026548672566 [2023-08-27 11:50:13,468 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2424 transitions. [2023-08-27 11:50:13,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2424 transitions. [2023-08-27 11:50:13,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:13,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2424 transitions. [2023-08-27 11:50:13,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 202.0) internal successors, (2424), 12 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:13,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 452.0) internal successors, (5876), 13 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:13,474 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 452.0) internal successors, (5876), 13 states have internal predecessors, (5876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:13,474 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 123 flow. Second operand 12 states and 2424 transitions. [2023-08-27 11:50:13,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 243 flow [2023-08-27 11:50:13,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 229 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:50:13,475 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 193 flow [2023-08-27 11:50:13,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=452, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=193, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-08-27 11:50:13,475 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-08-27 11:50:13,475 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 193 flow [2023-08-27 11:50:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 199.30769230769232) internal successors, (2591), 13 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:13,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:13,476 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-27 11:50:13,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 11:50:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:13,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:50:13,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1290035265, now seen corresponding path program 3 times [2023-08-27 11:50:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834664533] [2023-08-27 11:50:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:50:13,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:50:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:50:13,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:50:13,721 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:50:13,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:50:13,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 11:50:13,721 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-27 11:50:13,722 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:50:13,722 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:50:13,722 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:50:13,750 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:50:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,786 INFO L124 PetriNetUnfolderBase]: 87/561 cut-off events. [2023-08-27 11:50:13,786 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:50:13,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 561 events. 87/561 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2688 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 340. Up to 12 conditions per place. [2023-08-27 11:50:13,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:50:13,794 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 326 transitions, 670 flow [2023-08-27 11:50:13,828 INFO L124 PetriNetUnfolderBase]: 87/561 cut-off events. [2023-08-27 11:50:13,828 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:50:13,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 561 events. 87/561 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2688 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 340. Up to 12 conditions per place. [2023-08-27 11:50:13,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 54740 [2023-08-27 11:50:17,665 INFO L134 LiptonReduction]: Checked pairs total: 92254 [2023-08-27 11:50:17,666 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-27 11:50:17,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:50:17,667 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;@178399e6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:50:17,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2023-08-27 11:50:17,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:50:17,667 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 11:50:17,668 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:50:17,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:17,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 11:50:17,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:17,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:17,668 INFO L85 PathProgramCache]: Analyzing trace with hash 59777, now seen corresponding path program 1 times [2023-08-27 11:50:17,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783371097] [2023-08-27 11:50:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783371097] [2023-08-27 11:50:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783371097] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:50:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710972772] [2023-08-27 11:50:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:17,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:17,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:17,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 133 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:17,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:17,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:17,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:20,150 INFO L124 PetriNetUnfolderBase]: 36138/54801 cut-off events. [2023-08-27 11:50:20,150 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-27 11:50:20,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107269 conditions, 54801 events. 36138/54801 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1893. Compared 410856 event pairs, 32511 based on Foata normal form. 6026/40350 useless extension candidates. Maximal degree in co-relation 48427. Up to 52321 conditions per place. [2023-08-27 11:50:20,368 INFO L140 encePairwiseOnDemand]: 574/609 looper letters, 85 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2023-08-27 11:50:20,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 392 flow [2023-08-27 11:50:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 927 transitions. [2023-08-27 11:50:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073891625615764 [2023-08-27 11:50:20,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 927 transitions. [2023-08-27 11:50:20,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 927 transitions. [2023-08-27 11:50:20,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:20,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 927 transitions. [2023-08-27 11:50:20,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:20,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:20,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:20,373 INFO L175 Difference]: Start difference. First operand has 98 places, 133 transitions, 284 flow. Second operand 3 states and 927 transitions. [2023-08-27 11:50:20,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 392 flow [2023-08-27 11:50:20,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:50:20,375 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 222 flow [2023-08-27 11:50:20,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-08-27 11:50:20,375 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2023-08-27 11:50:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 222 flow [2023-08-27 11:50:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.6666666666667) internal successors, (809), 3 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:20,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:20,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 11:50:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:50:20,376 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:20,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash -552117378, now seen corresponding path program 1 times [2023-08-27 11:50:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:20,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077261128] [2023-08-27 11:50:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077261128] [2023-08-27 11:50:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077261128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:50:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708884371] [2023-08-27 11:50:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:20,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:20,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:20,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:20,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:20,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:23,169 INFO L124 PetriNetUnfolderBase]: 36138/54802 cut-off events. [2023-08-27 11:50:23,170 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-27 11:50:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107274 conditions, 54802 events. 36138/54802 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1899. Compared 411083 event pairs, 32511 based on Foata normal form. 1/34327 useless extension candidates. Maximal degree in co-relation 107259. Up to 52323 conditions per place. [2023-08-27 11:50:23,383 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 86 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-27 11:50:23,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 400 flow [2023-08-27 11:50:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:23,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-08-27 11:50:23,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904214559386973 [2023-08-27 11:50:23,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-08-27 11:50:23,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-08-27 11:50:23,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:23,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-08-27 11:50:23,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:23,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:23,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:23,387 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 222 flow. Second operand 3 states and 896 transitions. [2023-08-27 11:50:23,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 400 flow [2023-08-27 11:50:23,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 101 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:50:23,389 INFO L231 Difference]: Finished difference. Result has 99 places, 101 transitions, 230 flow [2023-08-27 11:50:23,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=99, PETRI_TRANSITIONS=101} [2023-08-27 11:50:23,390 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 1 predicate places. [2023-08-27 11:50:23,390 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 230 flow [2023-08-27 11:50:23,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:23,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:23,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:50:23,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:23,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash 878840024, now seen corresponding path program 1 times [2023-08-27 11:50:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:23,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003534878] [2023-08-27 11:50:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003534878] [2023-08-27 11:50:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003534878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831396389] [2023-08-27 11:50:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:23,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:23,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:23,410 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:23,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 11:50:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:23,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:50:23,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:23,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:50:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831396389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:50:23,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:50:23,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 11:50:23,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110569352] [2023-08-27 11:50:23,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:50:23,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:50:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:23,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:50:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:50:23,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:23,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:26,026 INFO L124 PetriNetUnfolderBase]: 36138/54805 cut-off events. [2023-08-27 11:50:26,026 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-27 11:50:26,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107287 conditions, 54805 events. 36138/54805 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 1893. Compared 410808 event pairs, 32511 based on Foata normal form. 0/34328 useless extension candidates. Maximal degree in co-relation 107274. Up to 52323 conditions per place. [2023-08-27 11:50:26,258 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 86 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-08-27 11:50:26,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 424 flow [2023-08-27 11:50:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:50:26,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:50:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1708 transitions. [2023-08-27 11:50:26,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674329501915709 [2023-08-27 11:50:26,260 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1708 transitions. [2023-08-27 11:50:26,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1708 transitions. [2023-08-27 11:50:26,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:26,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1708 transitions. [2023-08-27 11:50:26,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.6666666666667) internal successors, (1708), 6 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:26,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:26,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:26,265 INFO L175 Difference]: Start difference. First operand has 99 places, 101 transitions, 230 flow. Second operand 6 states and 1708 transitions. [2023-08-27 11:50:26,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 104 transitions, 424 flow [2023-08-27 11:50:26,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 420 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:50:26,267 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 262 flow [2023-08-27 11:50:26,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2023-08-27 11:50:26,267 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 8 predicate places. [2023-08-27 11:50:26,267 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 262 flow [2023-08-27 11:50:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:26,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:26,267 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:26,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-27 11:50:26,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-27 11:50:26,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:26,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:26,472 INFO L85 PathProgramCache]: Analyzing trace with hash 855958014, now seen corresponding path program 2 times [2023-08-27 11:50:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:26,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853597528] [2023-08-27 11:50:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 11:50:26,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:26,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853597528] [2023-08-27 11:50:26,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853597528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:26,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:26,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:50:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996758243] [2023-08-27 11:50:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:26,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:26,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:26,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:26,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:26,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:26,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:26,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:29,171 INFO L124 PetriNetUnfolderBase]: 35804/55123 cut-off events. [2023-08-27 11:50:29,171 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-08-27 11:50:29,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107532 conditions, 55123 events. 35804/55123 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 422123 event pairs, 15663 based on Foata normal form. 0/34632 useless extension candidates. Maximal degree in co-relation 107497. Up to 52177 conditions per place. [2023-08-27 11:50:29,405 INFO L140 encePairwiseOnDemand]: 604/609 looper letters, 116 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-27 11:50:29,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 131 transitions, 552 flow [2023-08-27 11:50:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 924 transitions. [2023-08-27 11:50:29,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2023-08-27 11:50:29,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 924 transitions. [2023-08-27 11:50:29,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 924 transitions. [2023-08-27 11:50:29,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:29,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 924 transitions. [2023-08-27 11:50:29,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:29,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:29,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:29,409 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 262 flow. Second operand 3 states and 924 transitions. [2023-08-27 11:50:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 131 transitions, 552 flow [2023-08-27 11:50:29,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 538 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 11:50:29,411 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 264 flow [2023-08-27 11:50:29,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-08-27 11:50:29,412 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 10 predicate places. [2023-08-27 11:50:29,412 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 264 flow [2023-08-27 11:50:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:29,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:29,412 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:29,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 11:50:29,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:29,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1105034710, now seen corresponding path program 1 times [2023-08-27 11:50:29,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:29,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674942538] [2023-08-27 11:50:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:29,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674942538] [2023-08-27 11:50:29,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674942538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:29,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978518175] [2023-08-27 11:50:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:29,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:29,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:29,463 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:29,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 11:50:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:29,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 11:50:29,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:29,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:50:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:50:29,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978518175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:50:29,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:50:29,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-27 11:50:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379232620] [2023-08-27 11:50:29,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:50:29,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:50:29,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:50:29,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:50:29,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:29,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 264 flow. Second operand has 12 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:29,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:29,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:32,760 INFO L124 PetriNetUnfolderBase]: 36298/55068 cut-off events. [2023-08-27 11:50:32,760 INFO L125 PetriNetUnfolderBase]: For 1523/1523 co-relation queries the response was YES. [2023-08-27 11:50:32,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109930 conditions, 55068 events. 36298/55068 cut-off events. For 1523/1523 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 410939 event pairs, 32463 based on Foata normal form. 6/35212 useless extension candidates. Maximal degree in co-relation 109876. Up to 52201 conditions per place. [2023-08-27 11:50:33,013 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 87 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2023-08-27 11:50:33,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 111 transitions, 496 flow [2023-08-27 11:50:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:50:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:50:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3331 transitions. [2023-08-27 11:50:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558018609742748 [2023-08-27 11:50:33,017 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3331 transitions. [2023-08-27 11:50:33,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3331 transitions. [2023-08-27 11:50:33,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:33,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3331 transitions. [2023-08-27 11:50:33,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 277.5833333333333) internal successors, (3331), 12 states have internal predecessors, (3331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:33,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 609.0) internal successors, (7917), 13 states have internal predecessors, (7917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:33,023 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 609.0) internal successors, (7917), 13 states have internal predecessors, (7917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:33,023 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 264 flow. Second operand 12 states and 3331 transitions. [2023-08-27 11:50:33,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 111 transitions, 496 flow [2023-08-27 11:50:33,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:50:33,027 INFO L231 Difference]: Finished difference. Result has 124 places, 111 transitions, 346 flow [2023-08-27 11:50:33,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=346, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2023-08-27 11:50:33,027 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 26 predicate places. [2023-08-27 11:50:33,027 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 346 flow [2023-08-27 11:50:33,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 270.5833333333333) internal successors, (3247), 12 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:33,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:33,028 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:33,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 11:50:33,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 11:50:33,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:33,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash 483292182, now seen corresponding path program 2 times [2023-08-27 11:50:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617271635] [2023-08-27 11:50:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:33,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:33,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:33,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617271635] [2023-08-27 11:50:33,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617271635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:33,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:50:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390708058] [2023-08-27 11:50:33,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:33,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:50:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:50:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:50:33,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 609 [2023-08-27 11:50:33,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 235.66666666666666) internal successors, (1414), 6 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:33,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:33,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 609 [2023-08-27 11:50:33,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:39,479 INFO L124 PetriNetUnfolderBase]: 67533/102975 cut-off events. [2023-08-27 11:50:39,480 INFO L125 PetriNetUnfolderBase]: For 3006/3006 co-relation queries the response was YES. [2023-08-27 11:50:39,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207909 conditions, 102975 events. 67533/102975 cut-off events. For 3006/3006 co-relation queries the response was YES. Maximal size of possible extension queue 3025. Compared 852433 event pairs, 11815 based on Foata normal form. 0/64979 useless extension candidates. Maximal degree in co-relation 207831. Up to 53799 conditions per place. [2023-08-27 11:50:40,165 INFO L140 encePairwiseOnDemand]: 595/609 looper letters, 328 selfloop transitions, 26 changer transitions 0/367 dead transitions. [2023-08-27 11:50:40,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 367 transitions, 1629 flow [2023-08-27 11:50:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:50:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:50:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1984 transitions. [2023-08-27 11:50:40,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653999530846821 [2023-08-27 11:50:40,168 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1984 transitions. [2023-08-27 11:50:40,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1984 transitions. [2023-08-27 11:50:40,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:40,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1984 transitions. [2023-08-27 11:50:40,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 283.42857142857144) internal successors, (1984), 7 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:40,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:40,173 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:40,173 INFO L175 Difference]: Start difference. First operand has 124 places, 111 transitions, 346 flow. Second operand 7 states and 1984 transitions. [2023-08-27 11:50:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 367 transitions, 1629 flow [2023-08-27 11:50:40,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 367 transitions, 1581 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-27 11:50:40,178 INFO L231 Difference]: Finished difference. Result has 130 places, 136 transitions, 474 flow [2023-08-27 11:50:40,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=130, PETRI_TRANSITIONS=136} [2023-08-27 11:50:40,179 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 32 predicate places. [2023-08-27 11:50:40,179 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 136 transitions, 474 flow [2023-08-27 11:50:40,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 235.66666666666666) internal successors, (1414), 6 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:40,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:40,179 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:50:40,179 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:40,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash 179486611, now seen corresponding path program 1 times [2023-08-27 11:50:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24261843] [2023-08-27 11:50:40,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:40,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:40,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24261843] [2023-08-27 11:50:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24261843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:40,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:50:40,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696346355] [2023-08-27 11:50:40,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:40,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:40,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:40,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:40,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:40,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:40,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 136 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:40,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:40,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:40,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:46,231 INFO L124 PetriNetUnfolderBase]: 65553/102441 cut-off events. [2023-08-27 11:50:46,231 INFO L125 PetriNetUnfolderBase]: For 26409/26409 co-relation queries the response was YES. [2023-08-27 11:50:46,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229513 conditions, 102441 events. 65553/102441 cut-off events. For 26409/26409 co-relation queries the response was YES. Maximal size of possible extension queue 2677. Compared 878417 event pairs, 10770 based on Foata normal form. 0/71790 useless extension candidates. Maximal degree in co-relation 229453. Up to 82711 conditions per place. [2023-08-27 11:50:47,139 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 179 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2023-08-27 11:50:47,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 1008 flow [2023-08-27 11:50:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 943 transitions. [2023-08-27 11:50:47,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161466885604816 [2023-08-27 11:50:47,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 943 transitions. [2023-08-27 11:50:47,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 943 transitions. [2023-08-27 11:50:47,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:47,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 943 transitions. [2023-08-27 11:50:47,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:47,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:47,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:47,143 INFO L175 Difference]: Start difference. First operand has 130 places, 136 transitions, 474 flow. Second operand 3 states and 943 transitions. [2023-08-27 11:50:47,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 194 transitions, 1008 flow [2023-08-27 11:50:47,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 194 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:50:47,244 INFO L231 Difference]: Finished difference. Result has 131 places, 135 transitions, 474 flow [2023-08-27 11:50:47,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=131, PETRI_TRANSITIONS=135} [2023-08-27 11:50:47,244 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 33 predicate places. [2023-08-27 11:50:47,245 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 135 transitions, 474 flow [2023-08-27 11:50:47,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:47,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:47,245 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:47,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:50:47,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:47,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 179486610, now seen corresponding path program 1 times [2023-08-27 11:50:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976522641] [2023-08-27 11:50:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:50:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976522641] [2023-08-27 11:50:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976522641] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:50:47,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:50:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:50:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173969874] [2023-08-27 11:50:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:50:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:50:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:50:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:50:47,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:47,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 135 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:47,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:47,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:47,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:53,326 INFO L124 PetriNetUnfolderBase]: 63115/98636 cut-off events. [2023-08-27 11:50:53,326 INFO L125 PetriNetUnfolderBase]: For 23195/23195 co-relation queries the response was YES. [2023-08-27 11:50:53,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221612 conditions, 98636 events. 63115/98636 cut-off events. For 23195/23195 co-relation queries the response was YES. Maximal size of possible extension queue 2563. Compared 839354 event pairs, 6473 based on Foata normal form. 0/69939 useless extension candidates. Maximal degree in co-relation 221551. Up to 86652 conditions per place. [2023-08-27 11:50:54,017 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 175 selfloop transitions, 6 changer transitions 0/194 dead transitions. [2023-08-27 11:50:54,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 194 transitions, 1014 flow [2023-08-27 11:50:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:50:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:50:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 943 transitions. [2023-08-27 11:50:54,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161466885604816 [2023-08-27 11:50:54,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 943 transitions. [2023-08-27 11:50:54,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 943 transitions. [2023-08-27 11:50:54,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:54,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 943 transitions. [2023-08-27 11:50:54,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 314.3333333333333) internal successors, (943), 3 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:54,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:54,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:54,022 INFO L175 Difference]: Start difference. First operand has 131 places, 135 transitions, 474 flow. Second operand 3 states and 943 transitions. [2023-08-27 11:50:54,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 194 transitions, 1014 flow [2023-08-27 11:50:54,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 194 transitions, 1010 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:50:54,313 INFO L231 Difference]: Finished difference. Result has 131 places, 135 transitions, 492 flow [2023-08-27 11:50:54,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=131, PETRI_TRANSITIONS=135} [2023-08-27 11:50:54,314 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 33 predicate places. [2023-08-27 11:50:54,314 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 135 transitions, 492 flow [2023-08-27 11:50:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:54,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:54,314 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:54,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:50:54,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:54,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:54,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1293512451, now seen corresponding path program 1 times [2023-08-27 11:50:54,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:54,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277102373] [2023-08-27 11:50:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277102373] [2023-08-27 11:50:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277102373] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473544317] [2023-08-27 11:50:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:54,346 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:54,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 11:50:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:54,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:50:54,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:54,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:50:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:54,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473544317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:50:54,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:50:54,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-27 11:50:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689644206] [2023-08-27 11:50:54,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:50:54,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:50:54,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:50:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:50:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:50:54,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:50:54,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 135 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 271.85714285714283) internal successors, (1903), 7 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:54,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:50:54,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:50:54,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:50:55,384 INFO L124 PetriNetUnfolderBase]: 6684/11588 cut-off events. [2023-08-27 11:50:55,384 INFO L125 PetriNetUnfolderBase]: For 11859/11859 co-relation queries the response was YES. [2023-08-27 11:50:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34087 conditions, 11588 events. 6684/11588 cut-off events. For 11859/11859 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 82985 event pairs, 496 based on Foata normal form. 1292/10432 useless extension candidates. Maximal degree in co-relation 34026. Up to 7675 conditions per place. [2023-08-27 11:50:55,427 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 168 selfloop transitions, 3 changer transitions 0/178 dead transitions. [2023-08-27 11:50:55,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 178 transitions, 975 flow [2023-08-27 11:50:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:50:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:50:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1480 transitions. [2023-08-27 11:50:55,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860426929392447 [2023-08-27 11:50:55,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1480 transitions. [2023-08-27 11:50:55,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1480 transitions. [2023-08-27 11:50:55,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:50:55,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1480 transitions. [2023-08-27 11:50:55,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:55,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:55,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:55,432 INFO L175 Difference]: Start difference. First operand has 131 places, 135 transitions, 492 flow. Second operand 5 states and 1480 transitions. [2023-08-27 11:50:55,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 178 transitions, 975 flow [2023-08-27 11:50:55,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 178 transitions, 936 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 11:50:55,476 INFO L231 Difference]: Finished difference. Result has 99 places, 87 transitions, 324 flow [2023-08-27 11:50:55,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=99, PETRI_TRANSITIONS=87} [2023-08-27 11:50:55,477 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 1 predicate places. [2023-08-27 11:50:55,477 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 87 transitions, 324 flow [2023-08-27 11:50:55,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.85714285714283) internal successors, (1903), 7 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:50:55,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:50:55,478 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:50:55,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 11:50:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:55,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:50:55,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:50:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1166531722, now seen corresponding path program 1 times [2023-08-27 11:50:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:50:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917489172] [2023-08-27 11:50:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:50:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:50:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917489172] [2023-08-27 11:50:55,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917489172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:50:55,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062942205] [2023-08-27 11:50:55,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:50:55,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:50:55,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:50:55,831 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:50:55,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 11:50:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:50:55,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:50:55,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:50:55,952 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 [2023-08-27 11:50:56,007 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:50:56,008 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 [2023-08-27 11:50:56,027 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 [2023-08-27 11:50:56,079 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 [2023-08-27 11:50:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:50:56,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:51:00,112 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1157 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1157) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2023-08-27 11:51:02,123 WARN L839 $PredicateComparison]: unable to prove that (forall ((|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1157 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1157) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 0)) is different from false [2023-08-27 11:51:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-27 11:51:02,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062942205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:51:02,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:51:02,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-27 11:51:02,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570391455] [2023-08-27 11:51:02,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:51:02,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 11:51:02,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 11:51:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=82, Unknown=3, NotChecked=38, Total=156 [2023-08-27 11:51:02,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 609 [2023-08-27 11:51:02,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 324 flow. Second operand has 13 states, 13 states have (on average 236.6153846153846) internal successors, (3076), 13 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:02,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:02,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 609 [2023-08-27 11:51:02,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:16,243 WARN L234 SmtUtils]: Spent 14.03s 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) [2023-08-27 11:51:18,251 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] [2023-08-27 11:51:20,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:22,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:24,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:26,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:28,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:30,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-27 11:51:32,325 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] [2023-08-27 11:51:33,216 INFO L124 PetriNetUnfolderBase]: 6517/10659 cut-off events. [2023-08-27 11:51:33,217 INFO L125 PetriNetUnfolderBase]: For 15334/15334 co-relation queries the response was YES. [2023-08-27 11:51:33,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30390 conditions, 10659 events. 6517/10659 cut-off events. For 15334/15334 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 70220 event pairs, 1752 based on Foata normal form. 98/8404 useless extension candidates. Maximal degree in co-relation 30331. Up to 5220 conditions per place. [2023-08-27 11:51:33,267 INFO L140 encePairwiseOnDemand]: 596/609 looper letters, 155 selfloop transitions, 16 changer transitions 0/178 dead transitions. [2023-08-27 11:51:33,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 178 transitions, 932 flow [2023-08-27 11:51:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:51:33,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:51:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1793 transitions. [2023-08-27 11:51:33,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42059582453671124 [2023-08-27 11:51:33,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1793 transitions. [2023-08-27 11:51:33,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1793 transitions. [2023-08-27 11:51:33,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:33,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1793 transitions. [2023-08-27 11:51:33,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.14285714285717) internal successors, (1793), 7 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:33,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:33,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:33,273 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 324 flow. Second operand 7 states and 1793 transitions. [2023-08-27 11:51:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 178 transitions, 932 flow [2023-08-27 11:51:33,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 178 transitions, 911 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 11:51:33,281 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 396 flow [2023-08-27 11:51:33,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-27 11:51:33,281 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2023-08-27 11:51:33,281 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 396 flow [2023-08-27 11:51:33,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 236.6153846153846) internal successors, (3076), 13 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:33,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:33,282 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:33,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 11:51:33,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:51:33,486 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:33,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:33,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1028756971, now seen corresponding path program 1 times [2023-08-27 11:51:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740881807] [2023-08-27 11:51:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:33,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:33,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740881807] [2023-08-27 11:51:33,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740881807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:51:33,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:51:33,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:51:33,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356096456] [2023-08-27 11:51:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:51:33,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:51:33,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:51:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:51:33,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 609 [2023-08-27 11:51:33,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:33,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:33,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 609 [2023-08-27 11:51:33,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:34,596 INFO L124 PetriNetUnfolderBase]: 10977/17890 cut-off events. [2023-08-27 11:51:34,596 INFO L125 PetriNetUnfolderBase]: For 22123/22123 co-relation queries the response was YES. [2023-08-27 11:51:34,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50771 conditions, 17890 events. 10977/17890 cut-off events. For 22123/22123 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 128571 event pairs, 8044 based on Foata normal form. 120/14259 useless extension candidates. Maximal degree in co-relation 50710. Up to 10188 conditions per place. [2023-08-27 11:51:34,696 INFO L140 encePairwiseOnDemand]: 604/609 looper letters, 143 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-27 11:51:34,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 152 transitions, 916 flow [2023-08-27 11:51:34,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:51:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:51:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-27 11:51:34,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019157088122606 [2023-08-27 11:51:34,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-27 11:51:34,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-27 11:51:34,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:34,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-27 11:51:34,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:34,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:34,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:34,700 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 396 flow. Second operand 3 states and 917 transitions. [2023-08-27 11:51:34,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 152 transitions, 916 flow [2023-08-27 11:51:34,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 152 transitions, 885 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:51:34,715 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 389 flow [2023-08-27 11:51:34,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-27 11:51:34,715 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 6 predicate places. [2023-08-27 11:51:34,715 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 389 flow [2023-08-27 11:51:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:34,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:34,715 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:51:34,715 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:34,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 357799621, now seen corresponding path program 1 times [2023-08-27 11:51:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611519091] [2023-08-27 11:51:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:34,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:51:34,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611519091] [2023-08-27 11:51:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611519091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:51:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768083550] [2023-08-27 11:51:34,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:51:34,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:51:34,822 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:51:34,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 11:51:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:34,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:51:34,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:51:34,952 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 [2023-08-27 11:51:35,007 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:51:35,007 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 [2023-08-27 11:51:35,021 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 [2023-08-27 11:51:35,044 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 [2023-08-27 11:51:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:51:35,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:51:41,112 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1255 (Array Int Int))) (= ((as const (Array Int Int)) 0) (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1255) |c_~#cache~0.base|))) is different from false [2023-08-27 11:51:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-27 11:51:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768083550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:51:41,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:51:41,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 11:51:41,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978653093] [2023-08-27 11:51:41,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:51:41,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:51:41,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:41,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:51:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=79, Unknown=3, NotChecked=18, Total=132 [2023-08-27 11:51:41,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 609 [2023-08-27 11:51:41,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 389 flow. Second operand has 12 states, 12 states have (on average 236.66666666666666) internal successors, (2840), 12 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:41,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:41,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 609 [2023-08-27 11:51:41,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:42,682 INFO L124 PetriNetUnfolderBase]: 12613/20519 cut-off events. [2023-08-27 11:51:42,682 INFO L125 PetriNetUnfolderBase]: For 25634/25634 co-relation queries the response was YES. [2023-08-27 11:51:42,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58940 conditions, 20519 events. 12613/20519 cut-off events. For 25634/25634 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 148254 event pairs, 1823 based on Foata normal form. 0/16336 useless extension candidates. Maximal degree in co-relation 58879. Up to 11400 conditions per place. [2023-08-27 11:51:42,803 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 162 selfloop transitions, 16 changer transitions 0/185 dead transitions. [2023-08-27 11:51:42,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 185 transitions, 1092 flow [2023-08-27 11:51:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:51:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:51:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1548 transitions. [2023-08-27 11:51:42,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236453201970443 [2023-08-27 11:51:42,805 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1548 transitions. [2023-08-27 11:51:42,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1548 transitions. [2023-08-27 11:51:42,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:42,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1548 transitions. [2023-08-27 11:51:42,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:42,808 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:42,808 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 389 flow. Second operand 6 states and 1548 transitions. [2023-08-27 11:51:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 185 transitions, 1092 flow [2023-08-27 11:51:42,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 185 transitions, 1084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:51:42,823 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 510 flow [2023-08-27 11:51:42,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2023-08-27 11:51:42,824 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 14 predicate places. [2023-08-27 11:51:42,824 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 510 flow [2023-08-27 11:51:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 236.66666666666666) internal successors, (2840), 12 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:42,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:42,824 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:42,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 11:51:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-27 11:51:43,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:43,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash -159797520, now seen corresponding path program 1 times [2023-08-27 11:51:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:43,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604378043] [2023-08-27 11:51:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:43,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:43,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604378043] [2023-08-27 11:51:43,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604378043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:51:43,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:51:43,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:51:43,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774440361] [2023-08-27 11:51:43,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:51:43,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:51:43,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:51:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:51:43,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 609 [2023-08-27 11:51:43,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:43,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:43,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 609 [2023-08-27 11:51:43,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:44,683 INFO L124 PetriNetUnfolderBase]: 14595/23913 cut-off events. [2023-08-27 11:51:44,683 INFO L125 PetriNetUnfolderBase]: For 44179/44179 co-relation queries the response was YES. [2023-08-27 11:51:44,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74584 conditions, 23913 events. 14595/23913 cut-off events. For 44179/44179 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 181281 event pairs, 6985 based on Foata normal form. 0/20099 useless extension candidates. Maximal degree in co-relation 74518. Up to 16255 conditions per place. [2023-08-27 11:51:44,850 INFO L140 encePairwiseOnDemand]: 600/609 looper letters, 120 selfloop transitions, 22 changer transitions 0/149 dead transitions. [2023-08-27 11:51:44,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 988 flow [2023-08-27 11:51:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:51:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:51:44,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-27 11:51:44,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2023-08-27 11:51:44,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-27 11:51:44,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-27 11:51:44,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:44,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-27 11:51:44,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:44,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:44,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:44,854 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 510 flow. Second operand 3 states and 840 transitions. [2023-08-27 11:51:44,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 988 flow [2023-08-27 11:51:44,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 149 transitions, 986 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:51:44,888 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 666 flow [2023-08-27 11:51:44,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2023-08-27 11:51:44,888 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 17 predicate places. [2023-08-27 11:51:44,888 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 666 flow [2023-08-27 11:51:44,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:44,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:44,888 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:44,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:51:44,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:44,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash -159797518, now seen corresponding path program 1 times [2023-08-27 11:51:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:44,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814811404] [2023-08-27 11:51:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:45,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814811404] [2023-08-27 11:51:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814811404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:51:45,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:51:45,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:51:45,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004529243] [2023-08-27 11:51:45,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:51:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:51:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:45,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:51:45,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:51:45,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 609 [2023-08-27 11:51:45,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 666 flow. Second operand has 8 states, 8 states have (on average 229.75) internal successors, (1838), 8 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:45,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:45,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 609 [2023-08-27 11:51:45,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:47,561 INFO L124 PetriNetUnfolderBase]: 16836/27880 cut-off events. [2023-08-27 11:51:47,561 INFO L125 PetriNetUnfolderBase]: For 85757/85757 co-relation queries the response was YES. [2023-08-27 11:51:47,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96709 conditions, 27880 events. 16836/27880 cut-off events. For 85757/85757 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 217789 event pairs, 3111 based on Foata normal form. 192/24592 useless extension candidates. Maximal degree in co-relation 96642. Up to 15337 conditions per place. [2023-08-27 11:51:47,787 INFO L140 encePairwiseOnDemand]: 595/609 looper letters, 288 selfloop transitions, 46 changer transitions 0/341 dead transitions. [2023-08-27 11:51:47,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 341 transitions, 2296 flow [2023-08-27 11:51:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:51:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:51:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2784 transitions. [2023-08-27 11:51:47,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2023-08-27 11:51:47,790 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2784 transitions. [2023-08-27 11:51:47,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2784 transitions. [2023-08-27 11:51:47,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:47,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2784 transitions. [2023-08-27 11:51:47,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 253.0909090909091) internal successors, (2784), 11 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:47,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 609.0) internal successors, (7308), 12 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:47,795 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 609.0) internal successors, (7308), 12 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:47,795 INFO L175 Difference]: Start difference. First operand has 115 places, 109 transitions, 666 flow. Second operand 11 states and 2784 transitions. [2023-08-27 11:51:47,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 341 transitions, 2296 flow [2023-08-27 11:51:47,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 341 transitions, 2218 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 11:51:47,867 INFO L231 Difference]: Finished difference. Result has 127 places, 132 transitions, 986 flow [2023-08-27 11:51:47,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=986, PETRI_PLACES=127, PETRI_TRANSITIONS=132} [2023-08-27 11:51:47,867 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 29 predicate places. [2023-08-27 11:51:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 132 transitions, 986 flow [2023-08-27 11:51:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.75) internal successors, (1838), 8 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:47,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:47,868 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:51:47,868 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:47,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1521605786, now seen corresponding path program 1 times [2023-08-27 11:51:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369219985] [2023-08-27 11:51:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:48,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369219985] [2023-08-27 11:51:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369219985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:51:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209180604] [2023-08-27 11:51:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:48,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:51:48,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:51:48,029 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:51:48,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 11:51:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:48,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:51:48,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:51:48,160 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 [2023-08-27 11:51:48,214 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:51:48,214 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 [2023-08-27 11:51:48,235 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 [2023-08-27 11:51:48,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-27 11:51:48,368 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 16 treesize of output 18 [2023-08-27 11:51:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:48,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:51:48,406 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1404) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))) is different from false [2023-08-27 11:51:48,418 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array Int Int)) (v_ArrVal_1402 Int)) (or (< v_ArrVal_1402 (+ |c_t_funThread1of2ForFork0_cache_entry_addref_#t~post35#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1404) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)))) is different from false [2023-08-27 11:51:48,427 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array Int Int)) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1402 Int)) (let ((.cse0 (select |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|))) (or (< v_ArrVal_1402 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1404) |c_t_funThread1of2ForFork0_cache_entry_addref_~entry#1.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|)))))) is different from false [2023-08-27 11:51:48,463 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array Int Int)) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1402 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#cache~0.base|))) (or (< v_ArrVal_1402 (+ (select .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#cache~0.base| (store .cse0 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1404) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648))))) is different from false [2023-08-27 11:51:48,482 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1404 (Array Int Int)) (|t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| Int) (v_ArrVal_1401 (Array Int Int)) (v_ArrVal_1402 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1401))) (let ((.cse1 (select .cse0 |c_~#cache~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#cache~0.base| (store .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset| v_ArrVal_1402)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1404) |c_~#cache~0.base|) |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 2147483648)) (< v_ArrVal_1402 (+ (select .cse1 |t_funThread1of2ForFork0_cache_entry_addref_~entry#1.offset|) 1)))))) is different from false [2023-08-27 11:51:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-27 11:51:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209180604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:51:48,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:51:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 18 [2023-08-27 11:51:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140153344] [2023-08-27 11:51:48,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:51:48,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:51:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:51:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=169, Unknown=5, NotChecked=150, Total=380 [2023-08-27 11:51:48,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 609 [2023-08-27 11:51:48,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 132 transitions, 986 flow. Second operand has 20 states, 20 states have (on average 230.3) internal successors, (4606), 20 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:48,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:48,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 609 [2023-08-27 11:51:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:52,063 INFO L124 PetriNetUnfolderBase]: 19993/33233 cut-off events. [2023-08-27 11:51:52,063 INFO L125 PetriNetUnfolderBase]: For 125764/125764 co-relation queries the response was YES. [2023-08-27 11:51:52,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122621 conditions, 33233 events. 19993/33233 cut-off events. For 125764/125764 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 263073 event pairs, 5025 based on Foata normal form. 260/29501 useless extension candidates. Maximal degree in co-relation 122549. Up to 17267 conditions per place. [2023-08-27 11:51:52,357 INFO L140 encePairwiseOnDemand]: 595/609 looper letters, 269 selfloop transitions, 65 changer transitions 0/341 dead transitions. [2023-08-27 11:51:52,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 341 transitions, 2699 flow [2023-08-27 11:51:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:51:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:51:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2516 transitions. [2023-08-27 11:51:52,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41313628899835797 [2023-08-27 11:51:52,360 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2516 transitions. [2023-08-27 11:51:52,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2516 transitions. [2023-08-27 11:51:52,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:52,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2516 transitions. [2023-08-27 11:51:52,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.6) internal successors, (2516), 10 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:52,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 609.0) internal successors, (6699), 11 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:52,365 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 609.0) internal successors, (6699), 11 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:52,365 INFO L175 Difference]: Start difference. First operand has 127 places, 132 transitions, 986 flow. Second operand 10 states and 2516 transitions. [2023-08-27 11:51:52,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 341 transitions, 2699 flow [2023-08-27 11:51:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 341 transitions, 2595 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-08-27 11:51:52,508 INFO L231 Difference]: Finished difference. Result has 139 places, 170 transitions, 1584 flow [2023-08-27 11:51:52,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1584, PETRI_PLACES=139, PETRI_TRANSITIONS=170} [2023-08-27 11:51:52,509 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 41 predicate places. [2023-08-27 11:51:52,509 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 170 transitions, 1584 flow [2023-08-27 11:51:52,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 230.3) internal successors, (4606), 20 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:52,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:52,509 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:52,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 11:51:52,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:51:52,710 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:52,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash -898520851, now seen corresponding path program 1 times [2023-08-27 11:51:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:52,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789224678] [2023-08-27 11:51:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-27 11:51:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789224678] [2023-08-27 11:51:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789224678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:51:52,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:51:52,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:51:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793338678] [2023-08-27 11:51:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:51:52,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:51:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:51:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:51:52,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 609 [2023-08-27 11:51:52,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 170 transitions, 1584 flow. Second operand has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:52,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:52,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 609 [2023-08-27 11:51:52,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:51:57,174 INFO L124 PetriNetUnfolderBase]: 30852/51549 cut-off events. [2023-08-27 11:51:57,175 INFO L125 PetriNetUnfolderBase]: For 252365/252365 co-relation queries the response was YES. [2023-08-27 11:51:57,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203944 conditions, 51549 events. 30852/51549 cut-off events. For 252365/252365 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 432390 event pairs, 14531 based on Foata normal form. 353/46172 useless extension candidates. Maximal degree in co-relation 203865. Up to 31444 conditions per place. [2023-08-27 11:51:57,865 INFO L140 encePairwiseOnDemand]: 604/609 looper letters, 291 selfloop transitions, 2 changer transitions 0/300 dead transitions. [2023-08-27 11:51:57,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 300 transitions, 3475 flow [2023-08-27 11:51:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:51:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:51:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 916 transitions. [2023-08-27 11:51:57,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013683634373289 [2023-08-27 11:51:57,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 916 transitions. [2023-08-27 11:51:57,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 916 transitions. [2023-08-27 11:51:57,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:51:57,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 916 transitions. [2023-08-27 11:51:57,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:57,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:57,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:57,877 INFO L175 Difference]: Start difference. First operand has 139 places, 170 transitions, 1584 flow. Second operand 3 states and 916 transitions. [2023-08-27 11:51:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 300 transitions, 3475 flow [2023-08-27 11:51:58,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 300 transitions, 3395 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-08-27 11:51:58,493 INFO L231 Difference]: Finished difference. Result has 140 places, 171 transitions, 1558 flow [2023-08-27 11:51:58,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1558, PETRI_PLACES=140, PETRI_TRANSITIONS=171} [2023-08-27 11:51:58,494 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 42 predicate places. [2023-08-27 11:51:58,494 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 171 transitions, 1558 flow [2023-08-27 11:51:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:58,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:51:58,494 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:51:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 11:51:58,494 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:51:58,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:51:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1521605788, now seen corresponding path program 1 times [2023-08-27 11:51:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:51:58,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663938065] [2023-08-27 11:51:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:58,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:51:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:58,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:51:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663938065] [2023-08-27 11:51:58,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663938065] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:51:58,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145924315] [2023-08-27 11:51:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:51:58,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:51:58,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:51:58,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:51:58,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 11:51:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:51:58,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:51:58,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:51:58,830 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:51:58,831 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 [2023-08-27 11:51:58,883 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 11 treesize of output 7 [2023-08-27 11:51:58,911 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 14 treesize of output 16 [2023-08-27 11:51:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:58,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:51:58,969 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:51:58,969 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-08-27 11:51:58,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-08-27 11:51:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:51:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145924315] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:51:59,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:51:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-27 11:51:59,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262796630] [2023-08-27 11:51:59,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:51:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:51:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:51:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:51:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=240, Unknown=3, NotChecked=0, Total=306 [2023-08-27 11:51:59,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 609 [2023-08-27 11:51:59,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 171 transitions, 1558 flow. Second operand has 18 states, 18 states have (on average 230.66666666666666) internal successors, (4152), 18 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:51:59,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:51:59,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 609 [2023-08-27 11:51:59,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:52:07,047 INFO L124 PetriNetUnfolderBase]: 34502/57915 cut-off events. [2023-08-27 11:52:07,048 INFO L125 PetriNetUnfolderBase]: For 268248/268248 co-relation queries the response was YES. [2023-08-27 11:52:07,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231599 conditions, 57915 events. 34502/57915 cut-off events. For 268248/268248 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 494853 event pairs, 8552 based on Foata normal form. 388/51511 useless extension candidates. Maximal degree in co-relation 231519. Up to 18251 conditions per place. [2023-08-27 11:52:07,680 INFO L140 encePairwiseOnDemand]: 574/609 looper letters, 347 selfloop transitions, 104 changer transitions 0/458 dead transitions. [2023-08-27 11:52:07,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 458 transitions, 3884 flow [2023-08-27 11:52:07,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:52:07,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:52:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3279 transitions. [2023-08-27 11:52:07,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41417203486169 [2023-08-27 11:52:07,684 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3279 transitions. [2023-08-27 11:52:07,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3279 transitions. [2023-08-27 11:52:07,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:52:07,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3279 transitions. [2023-08-27 11:52:07,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 252.23076923076923) internal successors, (3279), 13 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:07,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 609.0) internal successors, (8526), 14 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:07,691 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 609.0) internal successors, (8526), 14 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:07,691 INFO L175 Difference]: Start difference. First operand has 140 places, 171 transitions, 1558 flow. Second operand 13 states and 3279 transitions. [2023-08-27 11:52:07,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 458 transitions, 3884 flow [2023-08-27 11:52:08,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 458 transitions, 3858 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:52:08,357 INFO L231 Difference]: Finished difference. Result has 154 places, 224 transitions, 2354 flow [2023-08-27 11:52:08,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2354, PETRI_PLACES=154, PETRI_TRANSITIONS=224} [2023-08-27 11:52:08,357 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 56 predicate places. [2023-08-27 11:52:08,357 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 224 transitions, 2354 flow [2023-08-27 11:52:08,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 230.66666666666666) internal successors, (4152), 18 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:08,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:52:08,358 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:52:08,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-27 11:52:08,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-27 11:52:08,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:52:08,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:52:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1709354882, now seen corresponding path program 1 times [2023-08-27 11:52:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:52:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292113653] [2023-08-27 11:52:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:52:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:52:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:52:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:52:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:52:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292113653] [2023-08-27 11:52:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292113653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:52:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702970728] [2023-08-27 11:52:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:52:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:52:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:52:08,693 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:52:08,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 11:52:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:52:08,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-27 11:52:08,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:52:08,835 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 [2023-08-27 11:52:08,893 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:52:08,893 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 [2023-08-27 11:52:08,925 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 [2023-08-27 11:52:08,948 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 [2023-08-27 11:52:09,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-08-27 11:52:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:52:09,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:52:09,112 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1593 (Array Int Int)) (|t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1593) |c_~#cache~0.base|) |t_funThread2of2ForFork0_cache_entry_addref_~entry#1.offset|)))) is different from false [2023-08-27 11:52:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-27 11:52:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702970728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:52:09,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:52:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-08-27 11:52:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627228028] [2023-08-27 11:52:09,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:52:09,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 11:52:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:52:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 11:52:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=247, Unknown=1, NotChecked=32, Total=342 [2023-08-27 11:52:09,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 609 [2023-08-27 11:52:09,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 224 transitions, 2354 flow. Second operand has 19 states, 19 states have (on average 230.57894736842104) internal successors, (4381), 19 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:09,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:52:09,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 609 [2023-08-27 11:52:09,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:52:17,586 INFO L124 PetriNetUnfolderBase]: 40958/69535 cut-off events. [2023-08-27 11:52:17,587 INFO L125 PetriNetUnfolderBase]: For 402368/402368 co-relation queries the response was YES. [2023-08-27 11:52:18,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316182 conditions, 69535 events. 40958/69535 cut-off events. For 402368/402368 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 621398 event pairs, 6042 based on Foata normal form. 0/61615 useless extension candidates. Maximal degree in co-relation 316098. Up to 36118 conditions per place. [2023-08-27 11:52:18,336 INFO L140 encePairwiseOnDemand]: 594/609 looper letters, 581 selfloop transitions, 193 changer transitions 0/781 dead transitions. [2023-08-27 11:52:18,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 781 transitions, 8940 flow [2023-08-27 11:52:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:52:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:52:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3791 transitions. [2023-08-27 11:52:18,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41499726327312536 [2023-08-27 11:52:18,339 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3791 transitions. [2023-08-27 11:52:18,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3791 transitions. [2023-08-27 11:52:18,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:52:18,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3791 transitions. [2023-08-27 11:52:18,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 252.73333333333332) internal successors, (3791), 15 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:18,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 609.0) internal successors, (9744), 16 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:18,346 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 609.0) internal successors, (9744), 16 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:18,346 INFO L175 Difference]: Start difference. First operand has 154 places, 224 transitions, 2354 flow. Second operand 15 states and 3791 transitions. [2023-08-27 11:52:18,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 781 transitions, 8940 flow [2023-08-27 11:52:20,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 781 transitions, 8590 flow, removed 131 selfloop flow, removed 7 redundant places. [2023-08-27 11:52:20,119 INFO L231 Difference]: Finished difference. Result has 170 places, 390 transitions, 5339 flow [2023-08-27 11:52:20,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5339, PETRI_PLACES=170, PETRI_TRANSITIONS=390} [2023-08-27 11:52:20,119 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 72 predicate places. [2023-08-27 11:52:20,119 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 390 transitions, 5339 flow [2023-08-27 11:52:20,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 230.57894736842104) internal successors, (4381), 19 states have internal predecessors, (4381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:20,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:52:20,120 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:52:20,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 11:52:20,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:52:20,320 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:52:20,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:52:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1709354881, now seen corresponding path program 1 times [2023-08-27 11:52:20,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:52:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781106270] [2023-08-27 11:52:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:52:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:52:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:52:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-27 11:52:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:52:20,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781106270] [2023-08-27 11:52:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781106270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:52:20,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:52:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:52:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900505744] [2023-08-27 11:52:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:52:20,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:52:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:52:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:52:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:52:20,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 609 [2023-08-27 11:52:20,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 390 transitions, 5339 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:20,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:52:20,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 609 [2023-08-27 11:52:20,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:52:30,269 INFO L124 PetriNetUnfolderBase]: 42986/73691 cut-off events. [2023-08-27 11:52:30,270 INFO L125 PetriNetUnfolderBase]: For 666179/666179 co-relation queries the response was YES. [2023-08-27 11:52:30,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377938 conditions, 73691 events. 42986/73691 cut-off events. For 666179/666179 co-relation queries the response was YES. Maximal size of possible extension queue 2246. Compared 667667 event pairs, 15546 based on Foata normal form. 615/68662 useless extension candidates. Maximal degree in co-relation 377847. Up to 42061 conditions per place. [2023-08-27 11:52:31,143 INFO L140 encePairwiseOnDemand]: 600/609 looper letters, 336 selfloop transitions, 177 changer transitions 0/520 dead transitions. [2023-08-27 11:52:31,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 520 transitions, 8024 flow [2023-08-27 11:52:31,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:52:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:52:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-27 11:52:31,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2023-08-27 11:52:31,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-27 11:52:31,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-27 11:52:31,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:52:31,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-27 11:52:31,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:31,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:31,147 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:31,147 INFO L175 Difference]: Start difference. First operand has 170 places, 390 transitions, 5339 flow. Second operand 3 states and 840 transitions. [2023-08-27 11:52:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 520 transitions, 8024 flow [2023-08-27 11:52:33,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 520 transitions, 7684 flow, removed 121 selfloop flow, removed 5 redundant places. [2023-08-27 11:52:33,868 INFO L231 Difference]: Finished difference. Result has 169 places, 455 transitions, 6977 flow [2023-08-27 11:52:33,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6977, PETRI_PLACES=169, PETRI_TRANSITIONS=455} [2023-08-27 11:52:33,869 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 71 predicate places. [2023-08-27 11:52:33,869 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 455 transitions, 6977 flow [2023-08-27 11:52:33,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:33,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:52:33,869 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:52:33,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 11:52:33,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:52:33,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:52:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 199896654, now seen corresponding path program 1 times [2023-08-27 11:52:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:52:33,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887621066] [2023-08-27 11:52:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:52:33,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:52:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:52:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-27 11:52:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:52:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887621066] [2023-08-27 11:52:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887621066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:52:33,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:52:33,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:52:33,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176944161] [2023-08-27 11:52:33,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:52:33,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:52:33,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:52:33,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:52:33,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:52:33,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 609 [2023-08-27 11:52:33,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 455 transitions, 6977 flow. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:33,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:52:33,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 609 [2023-08-27 11:52:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:52:44,513 INFO L124 PetriNetUnfolderBase]: 41453/71704 cut-off events. [2023-08-27 11:52:44,514 INFO L125 PetriNetUnfolderBase]: For 772827/772827 co-relation queries the response was YES. [2023-08-27 11:52:45,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386745 conditions, 71704 events. 41453/71704 cut-off events. For 772827/772827 co-relation queries the response was YES. Maximal size of possible extension queue 2182. Compared 656240 event pairs, 17399 based on Foata normal form. 0/67138 useless extension candidates. Maximal degree in co-relation 386654. Up to 61847 conditions per place. [2023-08-27 11:52:45,740 INFO L140 encePairwiseOnDemand]: 605/609 looper letters, 539 selfloop transitions, 10 changer transitions 0/556 dead transitions. [2023-08-27 11:52:45,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 556 transitions, 9655 flow [2023-08-27 11:52:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:52:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:52:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2023-08-27 11:52:45,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48932676518883417 [2023-08-27 11:52:45,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2023-08-27 11:52:45,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2023-08-27 11:52:45,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:52:45,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2023-08-27 11:52:45,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:45,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:45,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:45,753 INFO L175 Difference]: Start difference. First operand has 169 places, 455 transitions, 6977 flow. Second operand 3 states and 894 transitions. [2023-08-27 11:52:45,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 556 transitions, 9655 flow [2023-08-27 11:52:50,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 556 transitions, 9157 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-27 11:52:50,052 INFO L231 Difference]: Finished difference. Result has 168 places, 454 transitions, 6607 flow [2023-08-27 11:52:50,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=6587, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=6607, PETRI_PLACES=168, PETRI_TRANSITIONS=454} [2023-08-27 11:52:50,053 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 70 predicate places. [2023-08-27 11:52:50,053 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 454 transitions, 6607 flow [2023-08-27 11:52:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:50,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:52:50,053 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:52:50,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:52:50,054 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2023-08-27 11:52:50,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:52:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 199896471, now seen corresponding path program 1 times [2023-08-27 11:52:50,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:52:50,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778701872] [2023-08-27 11:52:50,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:52:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:52:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:52:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-27 11:52:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:52:50,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778701872] [2023-08-27 11:52:50,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778701872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:52:50,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:52:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:52:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633030453] [2023-08-27 11:52:50,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:52:50,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:52:50,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:52:50,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:52:50,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:52:50,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 609 [2023-08-27 11:52:50,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 454 transitions, 6607 flow. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:52:50,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:52:50,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 609 [2023-08-27 11:52:50,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand