/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_12-ptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:31:40,889 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:31:40,975 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 11:31:40,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:31:40,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:31:41,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:31:41,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:31:41,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:31:41,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:31:41,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:31:41,015 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:31:41,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:31:41,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:31:41,017 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:31:41,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:31:41,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:31:41,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:31:41,018 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:31:41,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:31:41,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:31:41,019 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:31:41,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:31:41,019 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:31:41,020 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:31:41,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:31:41,020 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:31:41,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:31:41,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:31:41,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:31:41,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:31:41,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:31:41,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:31:41,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:31:41,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:31:41,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:31:41,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:31:41,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:31:41,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:31:41,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:31:41,391 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:31:41,391 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:31:41,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-27 11:31:42,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:31:42,912 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:31:42,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-27 11:31:42,931 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afd39deaa/c8a5a4814ef743e1b536c559e4ed3592/FLAGbf29d4708 [2023-08-27 11:31:42,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afd39deaa/c8a5a4814ef743e1b536c559e4ed3592 [2023-08-27 11:31:42,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:31:42,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:31:42,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:31:42,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:31:42,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:31:42,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:31:42" (1/1) ... [2023-08-27 11:31:42,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408f3d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:42, skipping insertion in model container [2023-08-27 11:31:42,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:31:42" (1/1) ... [2023-08-27 11:31:43,002 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:31:43,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:31:43,332 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:31:43,359 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:31:43,361 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:31:43,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:31:43,434 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:31:43,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43 WrapperNode [2023-08-27 11:31:43,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:31:43,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:31:43,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:31:43,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:31:43,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,493 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-08-27 11:31:43,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:31:43,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:31:43,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:31:43,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:31:43,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:31:43,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:31:43,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:31:43,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:31:43,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (1/1) ... [2023-08-27 11:31:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:31:43,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:43,574 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 11:31:43,598 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 11:31:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:31:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:31:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:31:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:31:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:31:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:31:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:31:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:31:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:31:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:31:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:31:43,621 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 11:31:43,790 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:31:43,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:31:43,977 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:31:44,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:31:44,003 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 11:31:44,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:31:44 BoogieIcfgContainer [2023-08-27 11:31:44,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:31:44,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:31:44,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:31:44,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:31:44,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:31:42" (1/3) ... [2023-08-27 11:31:44,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65580367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:31:44, skipping insertion in model container [2023-08-27 11:31:44,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:31:43" (2/3) ... [2023-08-27 11:31:44,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65580367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:31:44, skipping insertion in model container [2023-08-27 11:31:44,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:31:44" (3/3) ... [2023-08-27 11:31:44,014 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-08-27 11:31:44,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:31:44,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 11:31:44,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:31:44,098 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:31:44,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 11:31:44,178 INFO L124 PetriNetUnfolderBase]: 19/180 cut-off events. [2023-08-27 11:31:44,179 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:31:44,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 19/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 465 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 11:31:44,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 11:31:44,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 136 transitions, 280 flow [2023-08-27 11:31:44,193 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:31:44,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 136 transitions, 280 flow [2023-08-27 11:31:44,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 136 transitions, 280 flow [2023-08-27 11:31:44,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2023-08-27 11:31:44,244 INFO L124 PetriNetUnfolderBase]: 18/177 cut-off events. [2023-08-27 11:31:44,245 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:31:44,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 18/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 463 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 11:31:44,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 4182 [2023-08-27 11:31:47,372 INFO L134 LiptonReduction]: Checked pairs total: 7472 [2023-08-27 11:31:47,372 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-27 11:31:47,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:31:47,389 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;@24e818a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:31:47,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-27 11:31:47,392 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:31:47,392 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 11:31:47,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:31:47,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:47,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:31:47,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:47,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash 16303014, now seen corresponding path program 1 times [2023-08-27 11:31:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138772040] [2023-08-27 11:31:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:47,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:47,630 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 11:31:47,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:47,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138772040] [2023-08-27 11:31:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138772040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:47,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:47,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:31:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686905611] [2023-08-27 11:31:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:47,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:31:47,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:31:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:31:47,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 263 [2023-08-27 11:31:47,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:47,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 263 [2023-08-27 11:31:47,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:47,806 INFO L124 PetriNetUnfolderBase]: 112/261 cut-off events. [2023-08-27 11:31:47,806 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:31:47,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 261 events. 112/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1004 event pairs, 91 based on Foata normal form. 9/202 useless extension candidates. Maximal degree in co-relation 499. Up to 236 conditions per place. [2023-08-27 11:31:47,812 INFO L140 encePairwiseOnDemand]: 249/263 looper letters, 40 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-27 11:31:47,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 182 flow [2023-08-27 11:31:47,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:31:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:31:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-27 11:31:47,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171102661596958 [2023-08-27 11:31:47,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-27 11:31:47,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-27 11:31:47,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:47,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-27 11:31:47,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,839 INFO L175 Difference]: Start difference. First operand has 36 places, 41 transitions, 90 flow. Second operand 3 states and 408 transitions. [2023-08-27 11:31:47,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 182 flow [2023-08-27 11:31:47,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:31:47,844 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 76 flow [2023-08-27 11:31:47,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2023-08-27 11:31:47,848 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-08-27 11:31:47,848 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 76 flow [2023-08-27 11:31:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:47,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:47,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:31:47,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:47,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 351410062, now seen corresponding path program 1 times [2023-08-27 11:31:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915023236] [2023-08-27 11:31:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:48,049 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 11:31:48,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:48,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915023236] [2023-08-27 11:31:48,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915023236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:48,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:48,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:31:48,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156401720] [2023-08-27 11:31:48,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:31:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:31:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:31:48,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 263 [2023-08-27 11:31:48,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:48,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 263 [2023-08-27 11:31:48,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:48,172 INFO L124 PetriNetUnfolderBase]: 92/228 cut-off events. [2023-08-27 11:31:48,173 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 11:31:48,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 228 events. 92/228 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 873 event pairs, 8 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 466. Up to 157 conditions per place. [2023-08-27 11:31:48,174 INFO L140 encePairwiseOnDemand]: 256/263 looper letters, 39 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2023-08-27 11:31:48,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 208 flow [2023-08-27 11:31:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:31:48,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:31:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-08-27 11:31:48,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41825095057034223 [2023-08-27 11:31:48,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-08-27 11:31:48,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-08-27 11:31:48,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:48,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-08-27 11:31:48,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,182 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 76 flow. Second operand 4 states and 440 transitions. [2023-08-27 11:31:48,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 208 flow [2023-08-27 11:31:48,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:31:48,184 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 103 flow [2023-08-27 11:31:48,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-27 11:31:48,185 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-08-27 11:31:48,185 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 103 flow [2023-08-27 11:31:48,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:48,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:48,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:31:48,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:48,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash -770611645, now seen corresponding path program 1 times [2023-08-27 11:31:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733740337] [2023-08-27 11:31:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:48,353 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 11:31:48,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:48,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733740337] [2023-08-27 11:31:48,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733740337] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782495850] [2023-08-27 11:31:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:48,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:48,361 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 11:31:48,384 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 11:31:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:48,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:31:48,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:48,501 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:31:48,501 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 11:31:48,541 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 11:31:48,622 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 11:31:48,637 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 11:31:48,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:48,680 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_34 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_34) c_t_funThread1of1ForFork0_~p~0.base) c_t_funThread1of1ForFork0_~p~0.offset)))) is different from false [2023-08-27 11:31:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:31:48,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782495850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:48,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:48,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 11:31:48,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341509708] [2023-08-27 11:31:48,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:48,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 11:31:48,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:48,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 11:31:48,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=60, Unknown=7, NotChecked=16, Total=110 [2023-08-27 11:31:48,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 263 [2023-08-27 11:31:48,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 103 flow. Second operand has 11 states, 11 states have (on average 100.18181818181819) internal successors, (1102), 11 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:48,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 263 [2023-08-27 11:31:48,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:48,920 INFO L124 PetriNetUnfolderBase]: 91/228 cut-off events. [2023-08-27 11:31:48,920 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 11:31:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 228 events. 91/228 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 891 event pairs, 8 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 519. Up to 126 conditions per place. [2023-08-27 11:31:48,922 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 40 selfloop transitions, 8 changer transitions 1/52 dead transitions. [2023-08-27 11:31:48,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 254 flow [2023-08-27 11:31:48,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:31:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:31:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2023-08-27 11:31:48,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41064638783269963 [2023-08-27 11:31:48,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2023-08-27 11:31:48,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2023-08-27 11:31:48,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:48,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2023-08-27 11:31:48,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,929 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 103 flow. Second operand 5 states and 540 transitions. [2023-08-27 11:31:48,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 254 flow [2023-08-27 11:31:48,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:31:48,931 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 118 flow [2023-08-27 11:31:48,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-27 11:31:48,932 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2023-08-27 11:31:48,932 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 118 flow [2023-08-27 11:31:48,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 100.18181818181819) internal successors, (1102), 11 states have internal predecessors, (1102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:48,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:48,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:48,948 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 11:31:49,148 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 11:31:49,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:49,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:49,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1731327295, now seen corresponding path program 1 times [2023-08-27 11:31:49,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-27 11:31:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:49,228 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 11:31:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587812257] [2023-08-27 11:31:49,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587812257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:49,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:49,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:31:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711745819] [2023-08-27 11:31:49,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:49,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:31:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:31:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:31:49,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 263 [2023-08-27 11:31:49,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:49,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 263 [2023-08-27 11:31:49,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:49,321 INFO L124 PetriNetUnfolderBase]: 83/219 cut-off events. [2023-08-27 11:31:49,321 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-08-27 11:31:49,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 219 events. 83/219 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 871 event pairs, 38 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 540. Up to 106 conditions per place. [2023-08-27 11:31:49,323 INFO L140 encePairwiseOnDemand]: 257/263 looper letters, 38 selfloop transitions, 8 changer transitions 3/52 dead transitions. [2023-08-27 11:31:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 286 flow [2023-08-27 11:31:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:31:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:31:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-08-27 11:31:49,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40456273764258555 [2023-08-27 11:31:49,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-08-27 11:31:49,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-08-27 11:31:49,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:49,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-08-27 11:31:49,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,330 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 118 flow. Second operand 5 states and 532 transitions. [2023-08-27 11:31:49,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 286 flow [2023-08-27 11:31:49,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:31:49,332 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 156 flow [2023-08-27 11:31:49,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-27 11:31:49,333 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2023-08-27 11:31:49,333 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 156 flow [2023-08-27 11:31:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:49,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:31:49,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:49,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1731327321, now seen corresponding path program 1 times [2023-08-27 11:31:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:49,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113008940] [2023-08-27 11:31:49,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:49,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:49,469 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 11:31:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113008940] [2023-08-27 11:31:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113008940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:49,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:49,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:31:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294312325] [2023-08-27 11:31:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:31:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:31:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:31:49,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 263 [2023-08-27 11:31:49,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:49,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 263 [2023-08-27 11:31:49,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:49,643 INFO L124 PetriNetUnfolderBase]: 86/244 cut-off events. [2023-08-27 11:31:49,644 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-27 11:31:49,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 244 events. 86/244 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1027 event pairs, 3 based on Foata normal form. 12/254 useless extension candidates. Maximal degree in co-relation 634. Up to 65 conditions per place. [2023-08-27 11:31:49,645 INFO L140 encePairwiseOnDemand]: 254/263 looper letters, 59 selfloop transitions, 12 changer transitions 5/79 dead transitions. [2023-08-27 11:31:49,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 443 flow [2023-08-27 11:31:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:31:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:31:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 905 transitions. [2023-08-27 11:31:49,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38234051542036335 [2023-08-27 11:31:49,649 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 905 transitions. [2023-08-27 11:31:49,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 905 transitions. [2023-08-27 11:31:49,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:49,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 905 transitions. [2023-08-27 11:31:49,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.55555555555556) internal successors, (905), 9 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,655 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 263.0) internal successors, (2630), 10 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,655 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 156 flow. Second operand 9 states and 905 transitions. [2023-08-27 11:31:49,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 443 flow [2023-08-27 11:31:49,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 431 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:31:49,660 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 200 flow [2023-08-27 11:31:49,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=200, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2023-08-27 11:31:49,662 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-08-27 11:31:49,662 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 200 flow [2023-08-27 11:31:49,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:49,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:31:49,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:49,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1607050297, now seen corresponding path program 1 times [2023-08-27 11:31:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934525637] [2023-08-27 11:31:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:49,710 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 11:31:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934525637] [2023-08-27 11:31:49,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934525637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:49,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585190796] [2023-08-27 11:31:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:49,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:49,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:49,714 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 11:31:49,728 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 11:31:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:49,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:31:49,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:49,820 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 11:31:49,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:49,834 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 11:31:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585190796] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:49,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:31:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522002729] [2023-08-27 11:31:49,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:49,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:31:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:31:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:31:49,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 263 [2023-08-27 11:31:49,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 118.85714285714286) internal successors, (832), 7 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:49,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 263 [2023-08-27 11:31:49,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:49,876 INFO L124 PetriNetUnfolderBase]: 17/76 cut-off events. [2023-08-27 11:31:49,877 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-08-27 11:31:49,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 76 events. 17/76 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 230 event pairs, 0 based on Foata normal form. 11/87 useless extension candidates. Maximal degree in co-relation 263. Up to 52 conditions per place. [2023-08-27 11:31:49,877 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 21 selfloop transitions, 2 changer transitions 9/34 dead transitions. [2023-08-27 11:31:49,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 269 flow [2023-08-27 11:31:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:31:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:31:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-08-27 11:31:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467680608365019 [2023-08-27 11:31:49,880 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-08-27 11:31:49,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-08-27 11:31:49,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:49,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-08-27 11:31:49,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,883 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 263.0) internal successors, (1315), 5 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,883 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 200 flow. Second operand 4 states and 492 transitions. [2023-08-27 11:31:49,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 269 flow [2023-08-27 11:31:49,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 240 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 11:31:49,886 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 109 flow [2023-08-27 11:31:49,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-08-27 11:31:49,888 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-08-27 11:31:49,888 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 109 flow [2023-08-27 11:31:49,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.85714285714286) internal successors, (832), 7 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:49,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:49,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:49,899 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 11:31:50,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 11:31:50,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:50,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1653161662, now seen corresponding path program 1 times [2023-08-27 11:31:50,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:50,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574655797] [2023-08-27 11:31:50,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:50,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:50,369 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 11:31:50,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574655797] [2023-08-27 11:31:50,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574655797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:50,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337623038] [2023-08-27 11:31:50,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:50,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:50,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:50,371 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 11:31:50,384 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 11:31:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:50,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:31:50,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:50,468 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:31:50,468 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 11:31:50,489 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 11:31:50,573 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 28 treesize of output 16 [2023-08-27 11:31:50,617 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 11:31:50,634 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 11:31:50,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:50,690 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_124 Int) (v_ArrVal_126 (Array Int Int))) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| c_t_funThread1of1ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of1ForFork0_~p~0.base) c_t_funThread1of1ForFork0_~p~0.offset v_ArrVal_124)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_126) c_t_funThread1of1ForFork0_~p~0.base) c_t_funThread1of1ForFork0_~p~0.offset))) (< v_ArrVal_124 (+ |c_t_funThread1of1ForFork0_#t~post6| 1)))) is different from false [2023-08-27 11:31:50,702 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_124 Int) (v_ArrVal_126 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_t_funThread1of1ForFork0_~p~0.base))) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| c_t_funThread1of1ForFork0_~p~0.base (store .cse0 c_t_funThread1of1ForFork0_~p~0.offset v_ArrVal_124)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_126) c_t_funThread1of1ForFork0_~p~0.base) c_t_funThread1of1ForFork0_~p~0.offset))) (< v_ArrVal_124 (+ (select .cse0 c_t_funThread1of1ForFork0_~p~0.offset) 1))))) is different from false [2023-08-27 11:31:50,724 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_124 Int) (v_ArrVal_126 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global~0.base|))) (or (< v_ArrVal_124 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_124)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_126) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648))))) is different from false [2023-08-27 11:31:50,741 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_124 Int) (v_ArrVal_123 (Array Int Int)) (v_ArrVal_126 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_123))) (let ((.cse1 (select .cse0 |c_~#global~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#global~0.base| (store .cse1 |c_~#global~0.offset| v_ArrVal_124)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_126) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648)) (< v_ArrVal_124 (+ (select .cse1 |c_~#global~0.offset|) 1)))))) is different from false [2023-08-27 11:31:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:31:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337623038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:50,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:50,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-27 11:31:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333766679] [2023-08-27 11:31:50,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:50,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:31:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:31:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=138, Unknown=7, NotChecked=108, Total=306 [2023-08-27 11:31:50,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 263 [2023-08-27 11:31:50,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 109 flow. Second operand has 18 states, 18 states have (on average 94.0) internal successors, (1692), 18 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:50,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:50,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 263 [2023-08-27 11:31:50,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:50,938 INFO L124 PetriNetUnfolderBase]: 9/50 cut-off events. [2023-08-27 11:31:50,938 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 11:31:50,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 50 events. 9/50 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 3 based on Foata normal form. 2/52 useless extension candidates. Maximal degree in co-relation 143. Up to 21 conditions per place. [2023-08-27 11:31:50,939 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 11 selfloop transitions, 4 changer transitions 3/20 dead transitions. [2023-08-27 11:31:50,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 20 transitions, 145 flow [2023-08-27 11:31:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:31:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:31:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-27 11:31:50,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605830164765526 [2023-08-27 11:31:50,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-27 11:31:50,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-27 11:31:50,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:50,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-27 11:31:50,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:50,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:50,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 263.0) internal successors, (1841), 7 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:50,945 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 109 flow. Second operand 6 states and 569 transitions. [2023-08-27 11:31:50,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 20 transitions, 145 flow [2023-08-27 11:31:50,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 121 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-27 11:31:50,946 INFO L231 Difference]: Finished difference. Result has 31 places, 14 transitions, 68 flow [2023-08-27 11:31:50,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=68, PETRI_PLACES=31, PETRI_TRANSITIONS=14} [2023-08-27 11:31:50,947 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-27 11:31:50,947 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 68 flow [2023-08-27 11:31:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.0) internal successors, (1692), 18 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:50,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:50,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:50,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 11:31:51,155 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 11:31:51,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-08-27 11:31:51,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash 269769440, now seen corresponding path program 1 times [2023-08-27 11:31:51,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:51,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-27 11:31:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:51,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:51,420 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 11:31:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-27 11:31:51,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576271624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:31:51,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316931469] [2023-08-27 11:31:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:51,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:31:51,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:31:51,422 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 11:31:51,428 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 11:31:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:51,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:31:51,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:31:51,509 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:31:51,510 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 11:31:51,568 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 11:31:51,596 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 11:31:51,614 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 11:31:51,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:31:51,659 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:31:51,660 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 11:31:51,664 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 11:31:51,722 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 11:31:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316931469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:31:51,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:31:51,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2023-08-27 11:31:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526909786] [2023-08-27 11:31:51,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:31:51,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:31:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:31:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=252, Unknown=3, NotChecked=0, Total=306 [2023-08-27 11:31:51,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 263 [2023-08-27 11:31:51,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 68 flow. Second operand has 18 states, 18 states have (on average 88.0) internal successors, (1584), 18 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:51,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:51,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 263 [2023-08-27 11:31:51,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:52,141 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2023-08-27 11:31:52,142 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-27 11:31:52,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 52 events. 9/52 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 4 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 140. Up to 14 conditions per place. [2023-08-27 11:31:52,142 INFO L140 encePairwiseOnDemand]: 257/263 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-27 11:31:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 181 flow [2023-08-27 11:31:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:31:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:31:52,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1059 transitions. [2023-08-27 11:31:52,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3355513307984791 [2023-08-27 11:31:52,145 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1059 transitions. [2023-08-27 11:31:52,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1059 transitions. [2023-08-27 11:31:52,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:52,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1059 transitions. [2023-08-27 11:31:52,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 88.25) internal successors, (1059), 12 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:52,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 263.0) internal successors, (3419), 13 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:52,153 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 263.0) internal successors, (3419), 13 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:52,153 INFO L175 Difference]: Start difference. First operand has 31 places, 14 transitions, 68 flow. Second operand 12 states and 1059 transitions. [2023-08-27 11:31:52,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 181 flow [2023-08-27 11:31:52,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 139 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-08-27 11:31:52,154 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-27 11:31:52,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-27 11:31:52,156 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-27 11:31:52,156 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-27 11:31:52,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 88.0) internal successors, (1584), 18 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:52,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-27 11:31:52,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-08-27 11:31:52,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-27 11:31:52,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-08-27 11:31:52,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-08-27 11:31:52,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-27 11:31:52,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-08-27 11:31:52,162 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-08-27 11:31:52,170 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 11:31:52,371 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 11:31:52,371 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:52,373 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:31:52,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 11:31:52,390 INFO L124 PetriNetUnfolderBase]: 19/180 cut-off events. [2023-08-27 11:31:52,390 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:31:52,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 19/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 465 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 11:31:52,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 139 transitions, 286 flow [2023-08-27 11:31:52,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 265 flow [2023-08-27 11:31:52,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:31:52,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-27 11:31:52,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-27 11:31:52,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 265 flow [2023-08-27 11:31:52,403 INFO L124 PetriNetUnfolderBase]: 18/171 cut-off events. [2023-08-27 11:31:52,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:31:52,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 171 events. 18/171 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 440 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-08-27 11:31:52,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 4182 [2023-08-27 11:31:55,216 INFO L134 LiptonReduction]: Checked pairs total: 7162 [2023-08-27 11:31:55,216 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-27 11:31:55,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:31:55,218 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;@24e818a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:31:55,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:31:55,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:31:55,221 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2023-08-27 11:31:55,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:31:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:31:55,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:31:55,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2036550319, now seen corresponding path program 1 times [2023-08-27 11:31:55,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:55,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658833245] [2023-08-27 11:31:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:55,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:31:55,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:31:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:31:55,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:31:55,272 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:31:55,272 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:31:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:31:55,272 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:31:55,273 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:31:55,273 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:31:55,273 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:31:55,298 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:31:55,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,326 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 11:31:55,327 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:31:55,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 11:31:55,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,330 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:31:55,330 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:31:55,359 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 11:31:55,359 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:31:55,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 11:31:55,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 13284 [2023-08-27 11:31:58,656 INFO L134 LiptonReduction]: Checked pairs total: 29007 [2023-08-27 11:31:58,657 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-27 11:31:58,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:31:58,658 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;@24e818a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:31:58,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-27 11:31:58,660 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:31:58,660 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-27 11:31:58,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:31:58,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:58,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:31:58,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:31:58,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash 31796458, now seen corresponding path program 1 times [2023-08-27 11:31:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:58,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600501709] [2023-08-27 11:31:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:58,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:58,683 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 11:31:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600501709] [2023-08-27 11:31:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600501709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:58,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:31:58,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005544700] [2023-08-27 11:31:58,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:58,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:31:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:31:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:31:58,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 340 [2023-08-27 11:31:58,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:58,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:58,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 340 [2023-08-27 11:31:58,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:31:59,291 INFO L124 PetriNetUnfolderBase]: 4812/7988 cut-off events. [2023-08-27 11:31:59,292 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-27 11:31:59,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15742 conditions, 7988 events. 4812/7988 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 53226 event pairs, 2262 based on Foata normal form. 768/6097 useless extension candidates. Maximal degree in co-relation 1816. Up to 7633 conditions per place. [2023-08-27 11:31:59,339 INFO L140 encePairwiseOnDemand]: 320/340 looper letters, 59 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-27 11:31:59,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 276 flow [2023-08-27 11:31:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:31:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:31:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-27 11:31:59,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5274509803921569 [2023-08-27 11:31:59,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-27 11:31:59,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-27 11:31:59,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:31:59,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-27 11:31:59,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,346 INFO L175 Difference]: Start difference. First operand has 56 places, 68 transitions, 154 flow. Second operand 3 states and 538 transitions. [2023-08-27 11:31:59,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 276 flow [2023-08-27 11:31:59,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:31:59,349 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 140 flow [2023-08-27 11:31:59,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-27 11:31:59,350 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-27 11:31:59,350 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 140 flow [2023-08-27 11:31:59,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:31:59,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:31:59,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:31:59,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:31:59,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:31:59,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2051148311, now seen corresponding path program 1 times [2023-08-27 11:31:59,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:31:59,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736479742] [2023-08-27 11:31:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:31:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:31:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:31:59,418 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 11:31:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:31:59,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736479742] [2023-08-27 11:31:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736479742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:31:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:31:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:31:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669227307] [2023-08-27 11:31:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:31:59,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:31:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:31:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:31:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:31:59,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 340 [2023-08-27 11:31:59,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:31:59,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:31:59,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 340 [2023-08-27 11:31:59,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:00,401 INFO L124 PetriNetUnfolderBase]: 6835/11414 cut-off events. [2023-08-27 11:32:00,401 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2023-08-27 11:32:00,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23409 conditions, 11414 events. 6835/11414 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 81377 event pairs, 1711 based on Foata normal form. 0/8133 useless extension candidates. Maximal degree in co-relation 23321. Up to 6577 conditions per place. [2023-08-27 11:32:00,461 INFO L140 encePairwiseOnDemand]: 328/340 looper letters, 135 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2023-08-27 11:32:00,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 160 transitions, 699 flow [2023-08-27 11:32:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:32:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:32:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 924 transitions. [2023-08-27 11:32:00,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45294117647058824 [2023-08-27 11:32:00,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 924 transitions. [2023-08-27 11:32:00,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 924 transitions. [2023-08-27 11:32:00,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:00,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 924 transitions. [2023-08-27 11:32:00,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 154.0) internal successors, (924), 6 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 11:32:00,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:00,470 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:00,470 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 140 flow. Second operand 6 states and 924 transitions. [2023-08-27 11:32:00,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 160 transitions, 699 flow [2023-08-27 11:32:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:32:00,474 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 274 flow [2023-08-27 11:32:00,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-08-27 11:32:00,474 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-08-27 11:32:00,474 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 274 flow [2023-08-27 11:32:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:00,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:00,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:32:00,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:32:00,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:00,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1032931458, now seen corresponding path program 1 times [2023-08-27 11:32:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:00,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608239467] [2023-08-27 11:32:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608239467] [2023-08-27 11:32:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608239467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:00,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:00,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:00,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958274979] [2023-08-27 11:32:00,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:00,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:00,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 340 [2023-08-27 11:32:00,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:00,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:00,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 340 [2023-08-27 11:32:00,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:01,320 INFO L124 PetriNetUnfolderBase]: 6435/10667 cut-off events. [2023-08-27 11:32:01,320 INFO L125 PetriNetUnfolderBase]: For 4571/4571 co-relation queries the response was YES. [2023-08-27 11:32:01,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26602 conditions, 10667 events. 6435/10667 cut-off events. For 4571/4571 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 75681 event pairs, 2174 based on Foata normal form. 0/8568 useless extension candidates. Maximal degree in co-relation 21542. Up to 8035 conditions per place. [2023-08-27 11:32:01,369 INFO L140 encePairwiseOnDemand]: 337/340 looper letters, 92 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-27 11:32:01,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 558 flow [2023-08-27 11:32:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 11:32:01,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2023-08-27 11:32:01,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 11:32:01,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 11:32:01,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:01,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 11:32:01,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:01,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:01,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:01,374 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 274 flow. Second operand 3 states and 525 transitions. [2023-08-27 11:32:01,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 558 flow [2023-08-27 11:32:01,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 558 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:32:01,384 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 274 flow [2023-08-27 11:32:01,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-27 11:32:01,385 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-27 11:32:01,385 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 274 flow [2023-08-27 11:32:01,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:01,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:01,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:32:01,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:32:01,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:01,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1032931457, now seen corresponding path program 1 times [2023-08-27 11:32:01,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:01,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976502448] [2023-08-27 11:32:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:01,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976502448] [2023-08-27 11:32:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976502448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:01,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:01,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366186514] [2023-08-27 11:32:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:01,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:01,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 340 [2023-08-27 11:32:01,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:01,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:01,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 340 [2023-08-27 11:32:01,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:02,194 INFO L124 PetriNetUnfolderBase]: 6035/10009 cut-off events. [2023-08-27 11:32:02,195 INFO L125 PetriNetUnfolderBase]: For 4086/4086 co-relation queries the response was YES. [2023-08-27 11:32:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25208 conditions, 10009 events. 6035/10009 cut-off events. For 4086/4086 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 69955 event pairs, 1417 based on Foata normal form. 0/8230 useless extension candidates. Maximal degree in co-relation 20377. Up to 8672 conditions per place. [2023-08-27 11:32:02,250 INFO L140 encePairwiseOnDemand]: 336/340 looper letters, 89 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2023-08-27 11:32:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 562 flow [2023-08-27 11:32:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-27 11:32:02,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2023-08-27 11:32:02,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-27 11:32:02,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-27 11:32:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-27 11:32:02,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:02,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:02,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:02,256 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 274 flow. Second operand 3 states and 525 transitions. [2023-08-27 11:32:02,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 562 flow [2023-08-27 11:32:02,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 558 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:02,274 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 287 flow [2023-08-27 11:32:02,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2023-08-27 11:32:02,275 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-27 11:32:02,275 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 287 flow [2023-08-27 11:32:02,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:02,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:02,276 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:02,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:32:02,276 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:02,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:02,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1251745193, now seen corresponding path program 1 times [2023-08-27 11:32:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:02,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065250038] [2023-08-27 11:32:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:02,371 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 11:32:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065250038] [2023-08-27 11:32:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065250038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190127378] [2023-08-27 11:32:02,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:02,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:02,373 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 11:32:02,405 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 11:32:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:02,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:32:02,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:02,475 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:02,476 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 11:32:02,495 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 11:32:02,557 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 11:32:02,571 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 11:32:02,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:02,634 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 11:32:02,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190127378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:02,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:02,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 11:32:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903142916] [2023-08-27 11:32:02,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 11:32:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 11:32:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=77, Unknown=3, NotChecked=0, Total=110 [2023-08-27 11:32:02,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 340 [2023-08-27 11:32:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 287 flow. Second operand has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:02,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:02,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 340 [2023-08-27 11:32:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:03,628 INFO L124 PetriNetUnfolderBase]: 6005/10283 cut-off events. [2023-08-27 11:32:03,628 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2023-08-27 11:32:03,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25982 conditions, 10283 events. 6005/10283 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 73175 event pairs, 2305 based on Foata normal form. 61/8583 useless extension candidates. Maximal degree in co-relation 22474. Up to 7821 conditions per place. [2023-08-27 11:32:03,681 INFO L140 encePairwiseOnDemand]: 330/340 looper letters, 117 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2023-08-27 11:32:03,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 145 transitions, 832 flow [2023-08-27 11:32:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:32:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:32:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 889 transitions. [2023-08-27 11:32:03,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357843137254902 [2023-08-27 11:32:03,685 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 889 transitions. [2023-08-27 11:32:03,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 889 transitions. [2023-08-27 11:32:03,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:03,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 889 transitions. [2023-08-27 11:32:03,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.16666666666666) internal successors, (889), 6 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:03,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:03,691 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 340.0) internal successors, (2380), 7 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:03,691 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 287 flow. Second operand 6 states and 889 transitions. [2023-08-27 11:32:03,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 145 transitions, 832 flow [2023-08-27 11:32:03,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 145 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:32:03,706 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 426 flow [2023-08-27 11:32:03,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=426, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2023-08-27 11:32:03,708 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-27 11:32:03,708 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 426 flow [2023-08-27 11:32:03,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.1818181818182) internal successors, (1432), 11 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:03,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:03,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:03,716 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 11:32:03,913 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,SelfDestructingSolverStorable13 [2023-08-27 11:32:03,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:03,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 373206410, now seen corresponding path program 1 times [2023-08-27 11:32:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745678463] [2023-08-27 11:32:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:03,990 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 11:32:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:03,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745678463] [2023-08-27 11:32:03,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745678463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:03,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:03,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440681468] [2023-08-27 11:32:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:03,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:03,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 340 [2023-08-27 11:32:03,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:03,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:03,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 340 [2023-08-27 11:32:03,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:04,947 INFO L124 PetriNetUnfolderBase]: 8311/14213 cut-off events. [2023-08-27 11:32:04,947 INFO L125 PetriNetUnfolderBase]: For 14416/14416 co-relation queries the response was YES. [2023-08-27 11:32:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37655 conditions, 14213 events. 8311/14213 cut-off events. For 14416/14416 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 105821 event pairs, 4330 based on Foata normal form. 0/12431 useless extension candidates. Maximal degree in co-relation 34993. Up to 7827 conditions per place. [2023-08-27 11:32:05,011 INFO L140 encePairwiseOnDemand]: 333/340 looper letters, 96 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2023-08-27 11:32:05,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 120 transitions, 798 flow [2023-08-27 11:32:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-27 11:32:05,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725490196078431 [2023-08-27 11:32:05,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-27 11:32:05,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-27 11:32:05,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:05,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-27 11:32:05,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,016 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 426 flow. Second operand 3 states and 482 transitions. [2023-08-27 11:32:05,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 120 transitions, 798 flow [2023-08-27 11:32:05,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 798 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:32:05,035 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 545 flow [2023-08-27 11:32:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2023-08-27 11:32:05,036 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2023-08-27 11:32:05,036 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 545 flow [2023-08-27 11:32:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:05,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:32:05,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:05,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 517562171, now seen corresponding path program 1 times [2023-08-27 11:32:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617309061] [2023-08-27 11:32:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:05,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617309061] [2023-08-27 11:32:05,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617309061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:05,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783401385] [2023-08-27 11:32:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:05,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:05,149 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 11:32:05,152 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 11:32:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:05,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:32:05,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:05,259 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:05,259 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 11:32:05,275 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 11:32:05,308 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 11:32:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:05,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783401385] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:05,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:05,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 11:32:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457395184] [2023-08-27 11:32:05,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:05,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 11:32:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 11:32:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2023-08-27 11:32:05,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 340 [2023-08-27 11:32:05,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 545 flow. Second operand has 11 states, 11 states have (on average 130.45454545454547) internal successors, (1435), 11 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:05,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:05,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 340 [2023-08-27 11:32:05,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:06,862 INFO L124 PetriNetUnfolderBase]: 8554/14809 cut-off events. [2023-08-27 11:32:06,862 INFO L125 PetriNetUnfolderBase]: For 25327/25327 co-relation queries the response was YES. [2023-08-27 11:32:06,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42624 conditions, 14809 events. 8554/14809 cut-off events. For 25327/25327 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 113435 event pairs, 2160 based on Foata normal form. 0/13359 useless extension candidates. Maximal degree in co-relation 40072. Up to 7639 conditions per place. [2023-08-27 11:32:06,935 INFO L140 encePairwiseOnDemand]: 328/340 looper letters, 175 selfloop transitions, 57 changer transitions 0/239 dead transitions. [2023-08-27 11:32:06,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 239 transitions, 1735 flow [2023-08-27 11:32:06,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:32:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:32:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1474 transitions. [2023-08-27 11:32:06,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4335294117647059 [2023-08-27 11:32:06,940 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1474 transitions. [2023-08-27 11:32:06,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1474 transitions. [2023-08-27 11:32:06,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:06,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1474 transitions. [2023-08-27 11:32:06,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.4) internal successors, (1474), 10 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:06,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:06,950 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:06,950 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 545 flow. Second operand 10 states and 1474 transitions. [2023-08-27 11:32:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 239 transitions, 1735 flow [2023-08-27 11:32:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 239 transitions, 1659 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:06,997 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 913 flow [2023-08-27 11:32:06,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=913, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2023-08-27 11:32:06,998 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-08-27 11:32:06,998 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 913 flow [2023-08-27 11:32:06,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.45454545454547) internal successors, (1435), 11 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:06,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:06,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:07,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 11:32:07,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 11:32:07,204 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:07,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:07,205 INFO L85 PathProgramCache]: Analyzing trace with hash 373206389, now seen corresponding path program 1 times [2023-08-27 11:32:07,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:07,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433258065] [2023-08-27 11:32:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:07,314 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 11:32:07,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433258065] [2023-08-27 11:32:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433258065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:07,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:32:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562802783] [2023-08-27 11:32:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:07,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:07,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 340 [2023-08-27 11:32:07,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 913 flow. Second operand has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:07,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:07,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 340 [2023-08-27 11:32:07,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:09,437 INFO L124 PetriNetUnfolderBase]: 10857/18868 cut-off events. [2023-08-27 11:32:09,438 INFO L125 PetriNetUnfolderBase]: For 37323/37323 co-relation queries the response was YES. [2023-08-27 11:32:09,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57306 conditions, 18868 events. 10857/18868 cut-off events. For 37323/37323 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 151886 event pairs, 1989 based on Foata normal form. 277/18356 useless extension candidates. Maximal degree in co-relation 53971. Up to 8078 conditions per place. [2023-08-27 11:32:09,523 INFO L140 encePairwiseOnDemand]: 326/340 looper letters, 316 selfloop transitions, 115 changer transitions 0/438 dead transitions. [2023-08-27 11:32:09,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 438 transitions, 3320 flow [2023-08-27 11:32:09,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:32:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:32:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2173 transitions. [2023-08-27 11:32:09,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426078431372549 [2023-08-27 11:32:09,531 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2173 transitions. [2023-08-27 11:32:09,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2173 transitions. [2023-08-27 11:32:09,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:09,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2173 transitions. [2023-08-27 11:32:09,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 144.86666666666667) internal successors, (2173), 15 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:09,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:09,543 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:09,543 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 913 flow. Second operand 15 states and 2173 transitions. [2023-08-27 11:32:09,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 438 transitions, 3320 flow [2023-08-27 11:32:09,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 438 transitions, 3314 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-27 11:32:09,620 INFO L231 Difference]: Finished difference. Result has 111 places, 186 transitions, 1931 flow [2023-08-27 11:32:09,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1931, PETRI_PLACES=111, PETRI_TRANSITIONS=186} [2023-08-27 11:32:09,621 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-27 11:32:09,621 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 186 transitions, 1931 flow [2023-08-27 11:32:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:09,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:09,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:09,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:32:09,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:09,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1977774504, now seen corresponding path program 1 times [2023-08-27 11:32:09,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:09,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943660852] [2023-08-27 11:32:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:09,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:09,650 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 11:32:09,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943660852] [2023-08-27 11:32:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943660852] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300718461] [2023-08-27 11:32:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:09,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:09,653 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 11:32:09,679 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 11:32:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:09,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:32:09,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:09,754 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 11:32:09,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:09,769 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 11:32:09,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300718461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:09,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:09,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:32:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819986824] [2023-08-27 11:32:09,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:09,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:09,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 340 [2023-08-27 11:32:09,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 186 transitions, 1931 flow. Second operand has 7 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:09,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:09,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 340 [2023-08-27 11:32:09,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:10,175 INFO L124 PetriNetUnfolderBase]: 1652/3170 cut-off events. [2023-08-27 11:32:10,175 INFO L125 PetriNetUnfolderBase]: For 12857/12857 co-relation queries the response was YES. [2023-08-27 11:32:10,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13238 conditions, 3170 events. 1652/3170 cut-off events. For 12857/12857 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21933 event pairs, 190 based on Foata normal form. 379/3463 useless extension candidates. Maximal degree in co-relation 12779. Up to 2126 conditions per place. [2023-08-27 11:32:10,191 INFO L140 encePairwiseOnDemand]: 337/340 looper letters, 158 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-08-27 11:32:10,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 167 transitions, 1846 flow [2023-08-27 11:32:10,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:32:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:32:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 826 transitions. [2023-08-27 11:32:10,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858823529411765 [2023-08-27 11:32:10,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 826 transitions. [2023-08-27 11:32:10,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 826 transitions. [2023-08-27 11:32:10,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:10,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 826 transitions. [2023-08-27 11:32:10,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,199 INFO L175 Difference]: Start difference. First operand has 111 places, 186 transitions, 1931 flow. Second operand 5 states and 826 transitions. [2023-08-27 11:32:10,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 167 transitions, 1846 flow [2023-08-27 11:32:10,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 1584 flow, removed 77 selfloop flow, removed 12 redundant places. [2023-08-27 11:32:10,230 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 705 flow [2023-08-27 11:32:10,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=705, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2023-08-27 11:32:10,231 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-27 11:32:10,231 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 705 flow [2023-08-27 11:32:10,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.85714285714286) internal successors, (1077), 7 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:10,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:10,240 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 11:32:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:10,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:10,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1549015041, now seen corresponding path program 1 times [2023-08-27 11:32:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391503537] [2023-08-27 11:32:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:10,588 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 11:32:10,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391503537] [2023-08-27 11:32:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391503537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534125735] [2023-08-27 11:32:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:10,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:10,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:10,590 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 11:32:10,617 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 11:32:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:10,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:32:10,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:10,697 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:10,698 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 11:32:10,719 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 11:32:10,790 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 28 treesize of output 16 [2023-08-27 11:32:10,831 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 11:32:10,853 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 11:32:10,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:10,906 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_329 (Array Int Int)) (v_ArrVal_328 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset v_ArrVal_328)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_329) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483648)) (< v_ArrVal_328 (+ |c_t_funThread1of2ForFork0_#t~post6| 1)))) is different from false [2023-08-27 11:32:10,917 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_329 (Array Int Int)) (v_ArrVal_328 Int)) (let ((.cse0 (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base))) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (store .cse0 c_t_funThread1of2ForFork0_~p~0.offset v_ArrVal_328)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_329) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483648)) (< v_ArrVal_328 (+ (select .cse0 c_t_funThread1of2ForFork0_~p~0.offset) 1))))) is different from false [2023-08-27 11:32:10,944 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_329 (Array Int Int)) (v_ArrVal_328 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#global~0.base|))) (or (< v_ArrVal_328 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_328)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_329) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648))))) is different from false [2023-08-27 11:32:10,959 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int)) (v_ArrVal_329 (Array Int Int)) (v_ArrVal_328 Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_326))) (let ((.cse0 (select .cse1 |c_~#global~0.base|))) (or (< v_ArrVal_328 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store .cse1 |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_328)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_329) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648)))))) is different from false [2023-08-27 11:32:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:32:10,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534125735] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:10,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:10,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 16 [2023-08-27 11:32:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061868142] [2023-08-27 11:32:10,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:10,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:32:10,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:32:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=138, Unknown=7, NotChecked=108, Total=306 [2023-08-27 11:32:10,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 340 [2023-08-27 11:32:10,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 705 flow. Second operand has 18 states, 18 states have (on average 123.83333333333333) internal successors, (2229), 18 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:10,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:10,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 340 [2023-08-27 11:32:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:11,794 INFO L124 PetriNetUnfolderBase]: 1824/3518 cut-off events. [2023-08-27 11:32:11,794 INFO L125 PetriNetUnfolderBase]: For 14342/14342 co-relation queries the response was YES. [2023-08-27 11:32:11,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13692 conditions, 3518 events. 1824/3518 cut-off events. For 14342/14342 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25471 event pairs, 398 based on Foata normal form. 75/3490 useless extension candidates. Maximal degree in co-relation 9409. Up to 1729 conditions per place. [2023-08-27 11:32:11,808 INFO L140 encePairwiseOnDemand]: 328/340 looper letters, 143 selfloop transitions, 60 changer transitions 0/209 dead transitions. [2023-08-27 11:32:11,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 209 transitions, 1983 flow [2023-08-27 11:32:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:32:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:32:11,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1464 transitions. [2023-08-27 11:32:11,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39144385026737966 [2023-08-27 11:32:11,813 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1464 transitions. [2023-08-27 11:32:11,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1464 transitions. [2023-08-27 11:32:11,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:11,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1464 transitions. [2023-08-27 11:32:11,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0909090909091) internal successors, (1464), 11 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:11,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:11,821 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:11,821 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 705 flow. Second operand 11 states and 1464 transitions. [2023-08-27 11:32:11,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 209 transitions, 1983 flow [2023-08-27 11:32:11,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 209 transitions, 1948 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-27 11:32:11,836 INFO L231 Difference]: Finished difference. Result has 91 places, 119 transitions, 1186 flow [2023-08-27 11:32:11,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1186, PETRI_PLACES=91, PETRI_TRANSITIONS=119} [2023-08-27 11:32:11,836 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2023-08-27 11:32:11,836 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 119 transitions, 1186 flow [2023-08-27 11:32:11,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 123.83333333333333) internal successors, (2229), 18 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:11,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:11,837 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:11,842 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 11:32:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:12,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:12,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1554915372, now seen corresponding path program 1 times [2023-08-27 11:32:12,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:12,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085138695] [2023-08-27 11:32:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:12,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:12,135 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 11:32:12,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:12,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085138695] [2023-08-27 11:32:12,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085138695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:12,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449090226] [2023-08-27 11:32:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:12,137 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 11:32:12,140 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 11:32:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:12,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:32:12,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:12,236 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:12,237 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 11:32:12,271 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 11:32:12,295 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 11:32:12,309 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 11:32:12,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:12,346 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:12,346 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 11:32:12,348 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 11:32:12,364 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 11:32:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449090226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:12,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:12,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-27 11:32:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094211479] [2023-08-27 11:32:12,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:32:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:32:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:32:12,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 340 [2023-08-27 11:32:12,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 119 transitions, 1186 flow. Second operand has 12 states, 12 states have (on average 130.25) internal successors, (1563), 12 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:12,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:12,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 340 [2023-08-27 11:32:12,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:12,785 INFO L124 PetriNetUnfolderBase]: 1759/3381 cut-off events. [2023-08-27 11:32:12,786 INFO L125 PetriNetUnfolderBase]: For 17179/17179 co-relation queries the response was YES. [2023-08-27 11:32:12,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14173 conditions, 3381 events. 1759/3381 cut-off events. For 17179/17179 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23839 event pairs, 477 based on Foata normal form. 48/3333 useless extension candidates. Maximal degree in co-relation 13639. Up to 2173 conditions per place. [2023-08-27 11:32:12,804 INFO L140 encePairwiseOnDemand]: 332/340 looper letters, 113 selfloop transitions, 27 changer transitions 4/150 dead transitions. [2023-08-27 11:32:12,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1627 flow [2023-08-27 11:32:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:32:12,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:32:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2023-08-27 11:32:12,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152941176470588 [2023-08-27 11:32:12,808 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2023-08-27 11:32:12,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2023-08-27 11:32:12,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:12,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2023-08-27 11:32:12,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:12,812 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:12,812 INFO L175 Difference]: Start difference. First operand has 91 places, 119 transitions, 1186 flow. Second operand 5 states and 706 transitions. [2023-08-27 11:32:12,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1627 flow [2023-08-27 11:32:12,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 150 transitions, 1551 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-27 11:32:12,881 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 1177 flow [2023-08-27 11:32:12,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1177, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2023-08-27 11:32:12,882 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 37 predicate places. [2023-08-27 11:32:12,882 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 1177 flow [2023-08-27 11:32:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.25) internal successors, (1563), 12 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:12,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:12,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:12,891 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 11:32:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:13,087 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:13,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:13,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1197795692, now seen corresponding path program 1 times [2023-08-27 11:32:13,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:13,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440821582] [2023-08-27 11:32:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:13,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440821582] [2023-08-27 11:32:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440821582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960959899] [2023-08-27 11:32:13,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:13,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:13,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:13,230 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 11:32:13,244 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 11:32:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:13,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:32:13,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:13,325 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:13,326 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 11:32:13,343 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 11:32:13,372 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 11:32:13,433 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 28 treesize of output 16 [2023-08-27 11:32:13,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:13,461 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:13,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960959899] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:13,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:13,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-08-27 11:32:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259702979] [2023-08-27 11:32:13,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:13,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 11:32:13,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 11:32:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=214, Unknown=3, NotChecked=0, Total=272 [2023-08-27 11:32:13,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 340 [2023-08-27 11:32:13,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 1177 flow. Second operand has 17 states, 17 states have (on average 124.11764705882354) internal successors, (2110), 17 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:13,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:13,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 340 [2023-08-27 11:32:13,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:14,271 INFO L124 PetriNetUnfolderBase]: 2093/4036 cut-off events. [2023-08-27 11:32:14,271 INFO L125 PetriNetUnfolderBase]: For 22684/22684 co-relation queries the response was YES. [2023-08-27 11:32:14,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17436 conditions, 4036 events. 2093/4036 cut-off events. For 22684/22684 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29395 event pairs, 422 based on Foata normal form. 57/3957 useless extension candidates. Maximal degree in co-relation 10960. Up to 2292 conditions per place. [2023-08-27 11:32:14,290 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 206 selfloop transitions, 86 changer transitions 12/310 dead transitions. [2023-08-27 11:32:14,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 310 transitions, 3528 flow [2023-08-27 11:32:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:32:14,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:32:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2096 transitions. [2023-08-27 11:32:14,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2023-08-27 11:32:14,294 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2096 transitions. [2023-08-27 11:32:14,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2096 transitions. [2023-08-27 11:32:14,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:14,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2096 transitions. [2023-08-27 11:32:14,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 131.0) internal successors, (2096), 16 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:14,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 340.0) internal successors, (5780), 17 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:14,304 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 340.0) internal successors, (5780), 17 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:14,304 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 1177 flow. Second operand 16 states and 2096 transitions. [2023-08-27 11:32:14,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 310 transitions, 3528 flow [2023-08-27 11:32:14,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 3502 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:14,341 INFO L231 Difference]: Finished difference. Result has 115 places, 180 transitions, 2336 flow [2023-08-27 11:32:14,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2336, PETRI_PLACES=115, PETRI_TRANSITIONS=180} [2023-08-27 11:32:14,341 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2023-08-27 11:32:14,341 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 180 transitions, 2336 flow [2023-08-27 11:32:14,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 124.11764705882354) internal successors, (2110), 17 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:14,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:14,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:14,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 11:32:14,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-27 11:32:14,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:14,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:14,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1197795723, now seen corresponding path program 1 times [2023-08-27 11:32:14,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:14,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354966765] [2023-08-27 11:32:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:14,602 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 11:32:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354966765] [2023-08-27 11:32:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354966765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:14,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364148198] [2023-08-27 11:32:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:14,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 340 [2023-08-27 11:32:14,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 180 transitions, 2336 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:14,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:14,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 340 [2023-08-27 11:32:14,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:15,061 INFO L124 PetriNetUnfolderBase]: 1890/3761 cut-off events. [2023-08-27 11:32:15,061 INFO L125 PetriNetUnfolderBase]: For 29112/29112 co-relation queries the response was YES. [2023-08-27 11:32:15,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18895 conditions, 3761 events. 1890/3761 cut-off events. For 29112/29112 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27839 event pairs, 717 based on Foata normal form. 73/3824 useless extension candidates. Maximal degree in co-relation 14837. Up to 2176 conditions per place. [2023-08-27 11:32:15,083 INFO L140 encePairwiseOnDemand]: 334/340 looper letters, 166 selfloop transitions, 67 changer transitions 0/239 dead transitions. [2023-08-27 11:32:15,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 239 transitions, 3565 flow [2023-08-27 11:32:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:32:15,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:32:15,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-27 11:32:15,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44313725490196076 [2023-08-27 11:32:15,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-27 11:32:15,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-27 11:32:15,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:15,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-27 11:32:15,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:15,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:15,089 INFO L175 Difference]: Start difference. First operand has 115 places, 180 transitions, 2336 flow. Second operand 3 states and 452 transitions. [2023-08-27 11:32:15,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 239 transitions, 3565 flow [2023-08-27 11:32:15,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 239 transitions, 3422 flow, removed 56 selfloop flow, removed 3 redundant places. [2023-08-27 11:32:15,156 INFO L231 Difference]: Finished difference. Result has 116 places, 202 transitions, 2893 flow [2023-08-27 11:32:15,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2893, PETRI_PLACES=116, PETRI_TRANSITIONS=202} [2023-08-27 11:32:15,157 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 60 predicate places. [2023-08-27 11:32:15,157 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 202 transitions, 2893 flow [2023-08-27 11:32:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:15,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:15,157 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:32:15,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:15,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash -160567153, now seen corresponding path program 1 times [2023-08-27 11:32:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127966952] [2023-08-27 11:32:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127966952] [2023-08-27 11:32:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127966952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:32:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941998689] [2023-08-27 11:32:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:15,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:32:15,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:32:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:32:15,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 340 [2023-08-27 11:32:15,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 202 transitions, 2893 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:15,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:15,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 340 [2023-08-27 11:32:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:16,005 INFO L124 PetriNetUnfolderBase]: 2567/5044 cut-off events. [2023-08-27 11:32:16,005 INFO L125 PetriNetUnfolderBase]: For 46602/46602 co-relation queries the response was YES. [2023-08-27 11:32:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27018 conditions, 5044 events. 2567/5044 cut-off events. For 46602/46602 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 39281 event pairs, 405 based on Foata normal form. 27/5071 useless extension candidates. Maximal degree in co-relation 21975. Up to 2363 conditions per place. [2023-08-27 11:32:16,108 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 250 selfloop transitions, 199 changer transitions 4/459 dead transitions. [2023-08-27 11:32:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 459 transitions, 7430 flow [2023-08-27 11:32:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:32:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:32:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1254 transitions. [2023-08-27 11:32:16,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40980392156862744 [2023-08-27 11:32:16,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1254 transitions. [2023-08-27 11:32:16,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1254 transitions. [2023-08-27 11:32:16,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:16,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1254 transitions. [2023-08-27 11:32:16,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.33333333333334) internal successors, (1254), 9 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 340.0) internal successors, (3400), 10 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,115 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 340.0) internal successors, (3400), 10 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,115 INFO L175 Difference]: Start difference. First operand has 116 places, 202 transitions, 2893 flow. Second operand 9 states and 1254 transitions. [2023-08-27 11:32:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 459 transitions, 7430 flow [2023-08-27 11:32:16,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 459 transitions, 7110 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 11:32:16,211 INFO L231 Difference]: Finished difference. Result has 128 places, 347 transitions, 5773 flow [2023-08-27 11:32:16,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5773, PETRI_PLACES=128, PETRI_TRANSITIONS=347} [2023-08-27 11:32:16,212 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2023-08-27 11:32:16,212 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 347 transitions, 5773 flow [2023-08-27 11:32:16,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:16,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:16,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:32:16,213 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:16,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1440070694, now seen corresponding path program 1 times [2023-08-27 11:32:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675620347] [2023-08-27 11:32:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:16,281 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 11:32:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:16,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675620347] [2023-08-27 11:32:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675620347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:16,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:32:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894146133] [2023-08-27 11:32:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:32:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:32:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:32:16,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 340 [2023-08-27 11:32:16,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 347 transitions, 5773 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:16,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 340 [2023-08-27 11:32:16,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:16,414 INFO L124 PetriNetUnfolderBase]: 181/534 cut-off events. [2023-08-27 11:32:16,414 INFO L125 PetriNetUnfolderBase]: For 6412/6412 co-relation queries the response was YES. [2023-08-27 11:32:16,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3011 conditions, 534 events. 181/534 cut-off events. For 6412/6412 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2849 event pairs, 46 based on Foata normal form. 103/637 useless extension candidates. Maximal degree in co-relation 2969. Up to 431 conditions per place. [2023-08-27 11:32:16,418 INFO L140 encePairwiseOnDemand]: 335/340 looper letters, 66 selfloop transitions, 7 changer transitions 9/86 dead transitions. [2023-08-27 11:32:16,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 86 transitions, 1226 flow [2023-08-27 11:32:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:32:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:32:16,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 561 transitions. [2023-08-27 11:32:16,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2023-08-27 11:32:16,419 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 561 transitions. [2023-08-27 11:32:16,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 561 transitions. [2023-08-27 11:32:16,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:16,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 561 transitions. [2023-08-27 11:32:16,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,422 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,422 INFO L175 Difference]: Start difference. First operand has 128 places, 347 transitions, 5773 flow. Second operand 4 states and 561 transitions. [2023-08-27 11:32:16,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 86 transitions, 1226 flow [2023-08-27 11:32:16,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 86 transitions, 958 flow, removed 108 selfloop flow, removed 14 redundant places. [2023-08-27 11:32:16,437 INFO L231 Difference]: Finished difference. Result has 105 places, 72 transitions, 635 flow [2023-08-27 11:32:16,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=635, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2023-08-27 11:32:16,437 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2023-08-27 11:32:16,437 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 635 flow [2023-08-27 11:32:16,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:16,438 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:16,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:32:16,438 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:16,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1680951049, now seen corresponding path program 2 times [2023-08-27 11:32:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:16,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970772186] [2023-08-27 11:32:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:16,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970772186] [2023-08-27 11:32:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970772186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587402513] [2023-08-27 11:32:16,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:16,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:16,577 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 11:32:16,605 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 11:32:16,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:16,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:32:16,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:16,687 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:16,688 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 11:32:16,737 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 11:32:16,765 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 11:32:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:16,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:16,794 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_487) c_t_funThread2of2ForFork0_~p~0.base) c_t_funThread2of2ForFork0_~p~0.offset) 2147483649)) is different from false [2023-08-27 11:32:16,808 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:16,809 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 11:32:16,811 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 11:32:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 11:32:16,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587402513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:16,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:16,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-08-27 11:32:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480056237] [2023-08-27 11:32:16,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 11:32:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 11:32:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=141, Unknown=1, NotChecked=24, Total=210 [2023-08-27 11:32:16,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 340 [2023-08-27 11:32:16,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 635 flow. Second operand has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:16,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:16,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 340 [2023-08-27 11:32:16,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:17,220 INFO L124 PetriNetUnfolderBase]: 148/462 cut-off events. [2023-08-27 11:32:17,220 INFO L125 PetriNetUnfolderBase]: For 3242/3242 co-relation queries the response was YES. [2023-08-27 11:32:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 462 events. 148/462 cut-off events. For 3242/3242 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2446 event pairs, 33 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2244. Up to 134 conditions per place. [2023-08-27 11:32:17,222 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 65 selfloop transitions, 26 changer transitions 1/98 dead transitions. [2023-08-27 11:32:17,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 98 transitions, 1094 flow [2023-08-27 11:32:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:32:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:32:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1651 transitions. [2023-08-27 11:32:17,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735294117647059 [2023-08-27 11:32:17,231 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1651 transitions. [2023-08-27 11:32:17,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1651 transitions. [2023-08-27 11:32:17,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:17,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1651 transitions. [2023-08-27 11:32:17,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 127.0) internal successors, (1651), 13 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,236 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,236 INFO L175 Difference]: Start difference. First operand has 105 places, 72 transitions, 635 flow. Second operand 13 states and 1651 transitions. [2023-08-27 11:32:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 98 transitions, 1094 flow [2023-08-27 11:32:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 98 transitions, 1012 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-27 11:32:17,242 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 740 flow [2023-08-27 11:32:17,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=740, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2023-08-27 11:32:17,242 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2023-08-27 11:32:17,242 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 740 flow [2023-08-27 11:32:17,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.4) internal successors, (1866), 15 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:17,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:17,248 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 11:32:17,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 11:32:17,447 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:17,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:17,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1306639788, now seen corresponding path program 1 times [2023-08-27 11:32:17,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:17,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290149930] [2023-08-27 11:32:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:17,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:32:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290149930] [2023-08-27 11:32:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290149930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:17,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:17,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:32:17,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204072635] [2023-08-27 11:32:17,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:17,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:32:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:32:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:32:17,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 340 [2023-08-27 11:32:17,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 740 flow. Second operand has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:17,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 340 [2023-08-27 11:32:17,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:17,711 INFO L124 PetriNetUnfolderBase]: 146/455 cut-off events. [2023-08-27 11:32:17,711 INFO L125 PetriNetUnfolderBase]: For 3487/3487 co-relation queries the response was YES. [2023-08-27 11:32:17,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2388 conditions, 455 events. 146/455 cut-off events. For 3487/3487 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2410 event pairs, 61 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2356. Up to 261 conditions per place. [2023-08-27 11:32:17,714 INFO L140 encePairwiseOnDemand]: 329/340 looper letters, 74 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2023-08-27 11:32:17,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 101 transitions, 1137 flow [2023-08-27 11:32:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:32:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:32:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1112 transitions. [2023-08-27 11:32:17,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2023-08-27 11:32:17,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1112 transitions. [2023-08-27 11:32:17,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1112 transitions. [2023-08-27 11:32:17,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:17,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1112 transitions. [2023-08-27 11:32:17,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 340.0) internal successors, (3060), 9 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 340.0) internal successors, (3060), 9 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,720 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 740 flow. Second operand 8 states and 1112 transitions. [2023-08-27 11:32:17,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 101 transitions, 1137 flow [2023-08-27 11:32:17,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 101 transitions, 1065 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-27 11:32:17,729 INFO L231 Difference]: Finished difference. Result has 113 places, 85 transitions, 816 flow [2023-08-27 11:32:17,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=816, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2023-08-27 11:32:17,729 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 57 predicate places. [2023-08-27 11:32:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 816 flow [2023-08-27 11:32:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:17,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:17,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 11:32:17,730 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:17,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2037292285, now seen corresponding path program 1 times [2023-08-27 11:32:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398649533] [2023-08-27 11:32:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398649533] [2023-08-27 11:32:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398649533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:17,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:32:17,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47748455] [2023-08-27 11:32:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:17,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 340 [2023-08-27 11:32:17,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:17,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:17,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 340 [2023-08-27 11:32:17,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:18,129 INFO L124 PetriNetUnfolderBase]: 162/502 cut-off events. [2023-08-27 11:32:18,129 INFO L125 PetriNetUnfolderBase]: For 4540/4540 co-relation queries the response was YES. [2023-08-27 11:32:18,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 502 events. 162/502 cut-off events. For 4540/4540 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2720 event pairs, 27 based on Foata normal form. 3/505 useless extension candidates. Maximal degree in co-relation 2662. Up to 176 conditions per place. [2023-08-27 11:32:18,131 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 84 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2023-08-27 11:32:18,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 130 transitions, 1485 flow [2023-08-27 11:32:18,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:32:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:32:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2023-08-27 11:32:18,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017156862745098 [2023-08-27 11:32:18,133 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2023-08-27 11:32:18,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2023-08-27 11:32:18,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:18,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2023-08-27 11:32:18,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.58333333333334) internal successors, (1639), 12 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:18,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:18,138 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:18,139 INFO L175 Difference]: Start difference. First operand has 113 places, 85 transitions, 816 flow. Second operand 12 states and 1639 transitions. [2023-08-27 11:32:18,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 130 transitions, 1485 flow [2023-08-27 11:32:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 130 transitions, 1358 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-08-27 11:32:18,150 INFO L231 Difference]: Finished difference. Result has 124 places, 96 transitions, 970 flow [2023-08-27 11:32:18,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=970, PETRI_PLACES=124, PETRI_TRANSITIONS=96} [2023-08-27 11:32:18,150 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2023-08-27 11:32:18,150 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 96 transitions, 970 flow [2023-08-27 11:32:18,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:18,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:18,151 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:32:18,151 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:18,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:18,151 INFO L85 PathProgramCache]: Analyzing trace with hash -373859098, now seen corresponding path program 2 times [2023-08-27 11:32:18,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:18,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065335250] [2023-08-27 11:32:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:18,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065335250] [2023-08-27 11:32:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065335250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782312084] [2023-08-27 11:32:18,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:18,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:18,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:18,407 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 11:32:18,409 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 11:32:18,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:18,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:18,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:18,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:18,519 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:18,522 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 11:32:18,624 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 11:32:18,715 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 30 treesize of output 18 [2023-08-27 11:32:18,747 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 11:32:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:18,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:19,195 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:19,196 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 20 treesize of output 21 [2023-08-27 11:32:19,202 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:19,203 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 36 [2023-08-27 11:32:19,221 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-08-27 11:32:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782312084] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:23,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:23,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 11:32:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592113359] [2023-08-27 11:32:23,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 11:32:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 11:32:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=516, Unknown=11, NotChecked=0, Total=650 [2023-08-27 11:32:23,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 340 [2023-08-27 11:32:23,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 96 transitions, 970 flow. Second operand has 26 states, 26 states have (on average 122.07692307692308) internal successors, (3174), 26 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:23,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:23,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 340 [2023-08-27 11:32:23,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:23,967 INFO L124 PetriNetUnfolderBase]: 161/496 cut-off events. [2023-08-27 11:32:23,968 INFO L125 PetriNetUnfolderBase]: For 3957/3957 co-relation queries the response was YES. [2023-08-27 11:32:23,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 496 events. 161/496 cut-off events. For 3957/3957 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2658 event pairs, 15 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 2614. Up to 79 conditions per place. [2023-08-27 11:32:23,970 INFO L140 encePairwiseOnDemand]: 324/340 looper letters, 96 selfloop transitions, 38 changer transitions 3/143 dead transitions. [2023-08-27 11:32:23,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 143 transitions, 1791 flow [2023-08-27 11:32:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 11:32:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 11:32:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2359 transitions. [2023-08-27 11:32:23,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3651702786377709 [2023-08-27 11:32:23,973 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2359 transitions. [2023-08-27 11:32:23,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2359 transitions. [2023-08-27 11:32:23,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:23,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2359 transitions. [2023-08-27 11:32:23,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.15789473684211) internal successors, (2359), 19 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:23,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 340.0) internal successors, (6800), 20 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:23,980 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 340.0) internal successors, (6800), 20 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:23,981 INFO L175 Difference]: Start difference. First operand has 124 places, 96 transitions, 970 flow. Second operand 19 states and 2359 transitions. [2023-08-27 11:32:23,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 143 transitions, 1791 flow [2023-08-27 11:32:23,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 143 transitions, 1687 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-08-27 11:32:23,991 INFO L231 Difference]: Finished difference. Result has 137 places, 95 transitions, 959 flow [2023-08-27 11:32:23,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=959, PETRI_PLACES=137, PETRI_TRANSITIONS=95} [2023-08-27 11:32:23,992 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2023-08-27 11:32:23,992 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 95 transitions, 959 flow [2023-08-27 11:32:23,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 122.07692307692308) internal successors, (3174), 26 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:23,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:23,993 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:23,997 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 11:32:24,193 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,SelfDestructingSolverStorable27 [2023-08-27 11:32:24,193 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:24,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:24,194 INFO L85 PathProgramCache]: Analyzing trace with hash -373859051, now seen corresponding path program 2 times [2023-08-27 11:32:24,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:24,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606019748] [2023-08-27 11:32:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606019748] [2023-08-27 11:32:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606019748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901749369] [2023-08-27 11:32:24,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:24,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:24,469 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 11:32:24,498 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 11:32:24,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:24,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:24,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:24,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:24,611 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:24,611 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 11:32:24,697 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 11:32:24,789 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 28 treesize of output 16 [2023-08-27 11:32:24,833 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 11:32:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:24,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:27,062 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:27,062 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 11:32:27,068 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:27,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 29 treesize of output 32 [2023-08-27 11:32:27,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-08-27 11:32:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901749369] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:31,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-08-27 11:32:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804985682] [2023-08-27 11:32:31,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 11:32:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 11:32:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=436, Unknown=12, NotChecked=0, Total=552 [2023-08-27 11:32:31,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 340 [2023-08-27 11:32:31,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 95 transitions, 959 flow. Second operand has 24 states, 24 states have (on average 122.25) internal successors, (2934), 24 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:31,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:31,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 340 [2023-08-27 11:32:31,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:31,821 INFO L124 PetriNetUnfolderBase]: 157/478 cut-off events. [2023-08-27 11:32:31,822 INFO L125 PetriNetUnfolderBase]: For 3766/3766 co-relation queries the response was YES. [2023-08-27 11:32:31,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 478 events. 157/478 cut-off events. For 3766/3766 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2506 event pairs, 16 based on Foata normal form. 6/484 useless extension candidates. Maximal degree in co-relation 2553. Up to 79 conditions per place. [2023-08-27 11:32:31,825 INFO L140 encePairwiseOnDemand]: 326/340 looper letters, 90 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2023-08-27 11:32:31,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 132 transitions, 1612 flow [2023-08-27 11:32:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:32:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:32:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2112 transitions. [2023-08-27 11:32:31,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3653979238754325 [2023-08-27 11:32:31,827 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2112 transitions. [2023-08-27 11:32:31,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2112 transitions. [2023-08-27 11:32:31,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:31,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2112 transitions. [2023-08-27 11:32:31,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 124.23529411764706) internal successors, (2112), 17 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:31,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 340.0) internal successors, (6120), 18 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:31,834 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 340.0) internal successors, (6120), 18 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:31,834 INFO L175 Difference]: Start difference. First operand has 137 places, 95 transitions, 959 flow. Second operand 17 states and 2112 transitions. [2023-08-27 11:32:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 132 transitions, 1612 flow [2023-08-27 11:32:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 132 transitions, 1437 flow, removed 27 selfloop flow, removed 21 redundant places. [2023-08-27 11:32:31,842 INFO L231 Difference]: Finished difference. Result has 127 places, 91 transitions, 822 flow [2023-08-27 11:32:31,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=822, PETRI_PLACES=127, PETRI_TRANSITIONS=91} [2023-08-27 11:32:31,843 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 71 predicate places. [2023-08-27 11:32:31,843 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 91 transitions, 822 flow [2023-08-27 11:32:31,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 122.25) internal successors, (2934), 24 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:31,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:31,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:31,849 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 11:32:32,047 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,SelfDestructingSolverStorable28 [2023-08-27 11:32:32,047 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:32,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:32,048 INFO L85 PathProgramCache]: Analyzing trace with hash -460915574, now seen corresponding path program 1 times [2023-08-27 11:32:32,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:32,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781302808] [2023-08-27 11:32:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:32,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:32,162 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 11:32:32,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:32,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781302808] [2023-08-27 11:32:32,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781302808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:32,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:32,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:32:32,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90424827] [2023-08-27 11:32:32,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:32,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:32:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:32,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:32:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:32:32,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 340 [2023-08-27 11:32:32,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 91 transitions, 822 flow. Second operand has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:32,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 340 [2023-08-27 11:32:32,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:32,377 INFO L124 PetriNetUnfolderBase]: 156/487 cut-off events. [2023-08-27 11:32:32,378 INFO L125 PetriNetUnfolderBase]: For 2920/2920 co-relation queries the response was YES. [2023-08-27 11:32:32,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 487 events. 156/487 cut-off events. For 2920/2920 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2643 event pairs, 47 based on Foata normal form. 3/489 useless extension candidates. Maximal degree in co-relation 2368. Up to 166 conditions per place. [2023-08-27 11:32:32,381 INFO L140 encePairwiseOnDemand]: 328/340 looper letters, 80 selfloop transitions, 29 changer transitions 0/115 dead transitions. [2023-08-27 11:32:32,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 115 transitions, 1243 flow [2023-08-27 11:32:32,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:32:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:32:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1321 transitions. [2023-08-27 11:32:32,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3885294117647059 [2023-08-27 11:32:32,384 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1321 transitions. [2023-08-27 11:32:32,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1321 transitions. [2023-08-27 11:32:32,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:32,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1321 transitions. [2023-08-27 11:32:32,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.1) internal successors, (1321), 10 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,389 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,389 INFO L175 Difference]: Start difference. First operand has 127 places, 91 transitions, 822 flow. Second operand 10 states and 1321 transitions. [2023-08-27 11:32:32,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 115 transitions, 1243 flow [2023-08-27 11:32:32,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 115 transitions, 1156 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-27 11:32:32,399 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 913 flow [2023-08-27 11:32:32,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=913, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2023-08-27 11:32:32,400 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2023-08-27 11:32:32,401 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 913 flow [2023-08-27 11:32:32,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.83333333333334) internal successors, (773), 6 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:32,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:32:32,401 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:32,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:32,402 INFO L85 PathProgramCache]: Analyzing trace with hash -460915523, now seen corresponding path program 1 times [2023-08-27 11:32:32,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:32,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159213630] [2023-08-27 11:32:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:32,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:32,569 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 11:32:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159213630] [2023-08-27 11:32:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159213630] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:32:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517998868] [2023-08-27 11:32:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:32,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 340 [2023-08-27 11:32:32,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 913 flow. Second operand has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:32,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 340 [2023-08-27 11:32:32,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:32,839 INFO L124 PetriNetUnfolderBase]: 154/492 cut-off events. [2023-08-27 11:32:32,839 INFO L125 PetriNetUnfolderBase]: For 3062/3062 co-relation queries the response was YES. [2023-08-27 11:32:32,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 492 events. 154/492 cut-off events. For 3062/3062 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2707 event pairs, 68 based on Foata normal form. 3/494 useless extension candidates. Maximal degree in co-relation 2348. Up to 219 conditions per place. [2023-08-27 11:32:32,842 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 70 selfloop transitions, 41 changer transitions 0/117 dead transitions. [2023-08-27 11:32:32,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 117 transitions, 1291 flow [2023-08-27 11:32:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:32:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:32:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1574 transitions. [2023-08-27 11:32:32,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857843137254902 [2023-08-27 11:32:32,846 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1574 transitions. [2023-08-27 11:32:32,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1574 transitions. [2023-08-27 11:32:32,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:32,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1574 transitions. [2023-08-27 11:32:32,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.16666666666666) internal successors, (1574), 12 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,854 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,854 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 913 flow. Second operand 12 states and 1574 transitions. [2023-08-27 11:32:32,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 117 transitions, 1291 flow [2023-08-27 11:32:32,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 117 transitions, 1212 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-27 11:32:32,865 INFO L231 Difference]: Finished difference. Result has 134 places, 103 transitions, 1023 flow [2023-08-27 11:32:32,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1023, PETRI_PLACES=134, PETRI_TRANSITIONS=103} [2023-08-27 11:32:32,865 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2023-08-27 11:32:32,865 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 103 transitions, 1023 flow [2023-08-27 11:32:32,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:32,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:32,866 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:32,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:32:32,866 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:32,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1550526595, now seen corresponding path program 2 times [2023-08-27 11:32:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754585491] [2023-08-27 11:32:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:33,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754585491] [2023-08-27 11:32:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754585491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008857980] [2023-08-27 11:32:33,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:33,163 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 11:32:33,165 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 11:32:33,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:33,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:33,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:33,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:33,280 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:33,280 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 11:32:33,394 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 11:32:33,488 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 28 treesize of output 16 [2023-08-27 11:32:33,572 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 11:32:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:33,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:33,608 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_766) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483647)) is different from false [2023-08-27 11:32:33,617 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_766 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_766) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-27 11:32:33,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:33,705 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 11:32:33,713 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:33,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 29 treesize of output 32 [2023-08-27 11:32:33,729 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-08-27 11:32:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 11:32:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008857980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:37,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-08-27 11:32:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726514492] [2023-08-27 11:32:37,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-27 11:32:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-27 11:32:37,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=371, Unknown=9, NotChecked=82, Total=552 [2023-08-27 11:32:37,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 340 [2023-08-27 11:32:37,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 103 transitions, 1023 flow. Second operand has 24 states, 24 states have (on average 118.25) internal successors, (2838), 24 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:37,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:37,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 340 [2023-08-27 11:32:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:38,494 INFO L124 PetriNetUnfolderBase]: 154/488 cut-off events. [2023-08-27 11:32:38,494 INFO L125 PetriNetUnfolderBase]: For 2876/2876 co-relation queries the response was YES. [2023-08-27 11:32:38,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 488 events. 154/488 cut-off events. For 2876/2876 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2657 event pairs, 29 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2350. Up to 158 conditions per place. [2023-08-27 11:32:38,497 INFO L140 encePairwiseOnDemand]: 326/340 looper letters, 79 selfloop transitions, 40 changer transitions 0/125 dead transitions. [2023-08-27 11:32:38,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 125 transitions, 1495 flow [2023-08-27 11:32:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:32:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:32:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2039 transitions. [2023-08-27 11:32:38,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527681660899654 [2023-08-27 11:32:38,501 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2039 transitions. [2023-08-27 11:32:38,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2039 transitions. [2023-08-27 11:32:38,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:38,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2039 transitions. [2023-08-27 11:32:38,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.94117647058823) internal successors, (2039), 17 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:38,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 340.0) internal successors, (6120), 18 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:38,509 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 340.0) internal successors, (6120), 18 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:38,509 INFO L175 Difference]: Start difference. First operand has 134 places, 103 transitions, 1023 flow. Second operand 17 states and 2039 transitions. [2023-08-27 11:32:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 125 transitions, 1495 flow [2023-08-27 11:32:38,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 125 transitions, 1437 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-27 11:32:38,520 INFO L231 Difference]: Finished difference. Result has 143 places, 101 transitions, 1027 flow [2023-08-27 11:32:38,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1027, PETRI_PLACES=143, PETRI_TRANSITIONS=101} [2023-08-27 11:32:38,520 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 87 predicate places. [2023-08-27 11:32:38,520 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 101 transitions, 1027 flow [2023-08-27 11:32:38,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 118.25) internal successors, (2838), 24 states have internal predecessors, (2838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:38,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:38,521 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:38,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-27 11:32:38,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:38,722 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:38,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1550526544, now seen corresponding path program 2 times [2023-08-27 11:32:38,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778459012] [2023-08-27 11:32:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:38,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778459012] [2023-08-27 11:32:39,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778459012] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:39,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923296908] [2023-08-27 11:32:39,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:39,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:39,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:39,037 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 11:32:39,062 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 11:32:39,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:39,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:39,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:39,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:39,156 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:39,156 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 11:32:39,266 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 11:32:39,346 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 30 treesize of output 18 [2023-08-27 11:32:39,410 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 11:32:39,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:39,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:39,460 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_827 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_827) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset)))) is different from false [2023-08-27 11:32:39,583 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:39,583 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 20 treesize of output 21 [2023-08-27 11:32:39,589 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:39,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 36 [2023-08-27 11:32:39,607 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-08-27 11:32:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 11:32:43,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923296908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:43,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:43,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2023-08-27 11:32:43,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559366752] [2023-08-27 11:32:43,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:43,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 11:32:43,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:43,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 11:32:43,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=487, Unknown=6, NotChecked=46, Total=650 [2023-08-27 11:32:43,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 340 [2023-08-27 11:32:43,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 101 transitions, 1027 flow. Second operand has 26 states, 26 states have (on average 118.07692307692308) internal successors, (3070), 26 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:43,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:43,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 340 [2023-08-27 11:32:43,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:44,484 INFO L124 PetriNetUnfolderBase]: 154/490 cut-off events. [2023-08-27 11:32:44,485 INFO L125 PetriNetUnfolderBase]: For 3020/3020 co-relation queries the response was YES. [2023-08-27 11:32:44,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 490 events. 154/490 cut-off events. For 3020/3020 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2644 event pairs, 12 based on Foata normal form. 1/491 useless extension candidates. Maximal degree in co-relation 2399. Up to 105 conditions per place. [2023-08-27 11:32:44,488 INFO L140 encePairwiseOnDemand]: 326/340 looper letters, 83 selfloop transitions, 55 changer transitions 0/144 dead transitions. [2023-08-27 11:32:44,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 144 transitions, 1724 flow [2023-08-27 11:32:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 11:32:44,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 11:32:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2873 transitions. [2023-08-27 11:32:44,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35208333333333336 [2023-08-27 11:32:44,495 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2873 transitions. [2023-08-27 11:32:44,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2873 transitions. [2023-08-27 11:32:44,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:44,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2873 transitions. [2023-08-27 11:32:44,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 119.70833333333333) internal successors, (2873), 24 states have internal predecessors, (2873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 340.0) internal successors, (8500), 25 states have internal predecessors, (8500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,505 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 340.0) internal successors, (8500), 25 states have internal predecessors, (8500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,505 INFO L175 Difference]: Start difference. First operand has 143 places, 101 transitions, 1027 flow. Second operand 24 states and 2873 transitions. [2023-08-27 11:32:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 144 transitions, 1724 flow [2023-08-27 11:32:44,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1590 flow, removed 17 selfloop flow, removed 18 redundant places. [2023-08-27 11:32:44,516 INFO L231 Difference]: Finished difference. Result has 146 places, 106 transitions, 1072 flow [2023-08-27 11:32:44,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1072, PETRI_PLACES=146, PETRI_TRANSITIONS=106} [2023-08-27 11:32:44,517 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 90 predicate places. [2023-08-27 11:32:44,517 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 106 transitions, 1072 flow [2023-08-27 11:32:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 118.07692307692308) internal successors, (3070), 26 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:44,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:44,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-27 11:32:44,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:44,725 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:44,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:44,726 INFO L85 PathProgramCache]: Analyzing trace with hash -128254892, now seen corresponding path program 1 times [2023-08-27 11:32:44,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:44,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044856626] [2023-08-27 11:32:44,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:44,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:44,893 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 11:32:44,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:44,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044856626] [2023-08-27 11:32:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044856626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:44,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 11:32:44,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063694838] [2023-08-27 11:32:44,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:44,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:32:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:32:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:32:44,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 340 [2023-08-27 11:32:44,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 106 transitions, 1072 flow. Second operand has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:44,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:44,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 340 [2023-08-27 11:32:44,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:45,098 INFO L124 PetriNetUnfolderBase]: 150/487 cut-off events. [2023-08-27 11:32:45,099 INFO L125 PetriNetUnfolderBase]: For 2648/2648 co-relation queries the response was YES. [2023-08-27 11:32:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 487 events. 150/487 cut-off events. For 2648/2648 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2666 event pairs, 49 based on Foata normal form. 5/492 useless extension candidates. Maximal degree in co-relation 2384. Up to 243 conditions per place. [2023-08-27 11:32:45,101 INFO L140 encePairwiseOnDemand]: 329/340 looper letters, 81 selfloop transitions, 31 changer transitions 6/124 dead transitions. [2023-08-27 11:32:45,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 124 transitions, 1438 flow [2023-08-27 11:32:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:32:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:32:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1698 transitions. [2023-08-27 11:32:45,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38416289592760183 [2023-08-27 11:32:45,102 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1698 transitions. [2023-08-27 11:32:45,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1698 transitions. [2023-08-27 11:32:45,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1698 transitions. [2023-08-27 11:32:45,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 130.6153846153846) internal successors, (1698), 13 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,108 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,108 INFO L175 Difference]: Start difference. First operand has 146 places, 106 transitions, 1072 flow. Second operand 13 states and 1698 transitions. [2023-08-27 11:32:45,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 124 transitions, 1438 flow [2023-08-27 11:32:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 124 transitions, 1318 flow, removed 12 selfloop flow, removed 18 redundant places. [2023-08-27 11:32:45,117 INFO L231 Difference]: Finished difference. Result has 141 places, 100 transitions, 949 flow [2023-08-27 11:32:45,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=949, PETRI_PLACES=141, PETRI_TRANSITIONS=100} [2023-08-27 11:32:45,117 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-27 11:32:45,118 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 100 transitions, 949 flow [2023-08-27 11:32:45,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.85714285714286) internal successors, (902), 7 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:45,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:45,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:45,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:32:45,118 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:45,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash 383073588, now seen corresponding path program 2 times [2023-08-27 11:32:45,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:45,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247503719] [2023-08-27 11:32:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:45,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:45,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247503719] [2023-08-27 11:32:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247503719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:45,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933796736] [2023-08-27 11:32:45,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:45,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:45,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:45,441 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 11:32:45,467 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 11:32:45,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:45,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:45,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:45,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:45,593 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:45,594 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 11:32:45,741 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 11:32:45,791 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 11:32:45,887 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 30 treesize of output 18 [2023-08-27 11:32:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:45,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:46,053 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:46,053 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 20 treesize of output 21 [2023-08-27 11:32:46,061 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:46,061 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 35 treesize of output 38 [2023-08-27 11:32:46,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-08-27 11:32:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:32:46,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933796736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:46,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:46,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2023-08-27 11:32:46,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778895049] [2023-08-27 11:32:46,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-27 11:32:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:46,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-27 11:32:46,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=537, Unknown=11, NotChecked=0, Total=650 [2023-08-27 11:32:46,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 340 [2023-08-27 11:32:46,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 100 transitions, 949 flow. Second operand has 26 states, 26 states have (on average 116.42307692307692) internal successors, (3027), 26 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:46,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:46,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 340 [2023-08-27 11:32:46,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:46,853 INFO L124 PetriNetUnfolderBase]: 143/470 cut-off events. [2023-08-27 11:32:46,853 INFO L125 PetriNetUnfolderBase]: For 2328/2328 co-relation queries the response was YES. [2023-08-27 11:32:46,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 470 events. 143/470 cut-off events. For 2328/2328 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2547 event pairs, 16 based on Foata normal form. 5/475 useless extension candidates. Maximal degree in co-relation 2223. Up to 79 conditions per place. [2023-08-27 11:32:46,854 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 42 selfloop transitions, 12 changer transitions 77/137 dead transitions. [2023-08-27 11:32:46,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 137 transitions, 1547 flow [2023-08-27 11:32:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 11:32:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 11:32:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2239 transitions. [2023-08-27 11:32:46,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34659442724458206 [2023-08-27 11:32:46,857 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2239 transitions. [2023-08-27 11:32:46,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2239 transitions. [2023-08-27 11:32:46,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:46,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2239 transitions. [2023-08-27 11:32:46,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 117.84210526315789) internal successors, (2239), 19 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:46,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 340.0) internal successors, (6800), 20 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:46,864 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 340.0) internal successors, (6800), 20 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:46,864 INFO L175 Difference]: Start difference. First operand has 141 places, 100 transitions, 949 flow. Second operand 19 states and 2239 transitions. [2023-08-27 11:32:46,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 137 transitions, 1547 flow [2023-08-27 11:32:46,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1455 flow, removed 11 selfloop flow, removed 12 redundant places. [2023-08-27 11:32:46,872 INFO L231 Difference]: Finished difference. Result has 141 places, 53 transitions, 443 flow [2023-08-27 11:32:46,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=443, PETRI_PLACES=141, PETRI_TRANSITIONS=53} [2023-08-27 11:32:46,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-27 11:32:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 53 transitions, 443 flow [2023-08-27 11:32:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 116.42307692307692) internal successors, (3027), 26 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:46,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:46,874 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:46,883 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 11:32:47,079 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,SelfDestructingSolverStorable34 [2023-08-27 11:32:47,079 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:47,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 433970459, now seen corresponding path program 1 times [2023-08-27 11:32:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:47,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390419035] [2023-08-27 11:32:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:47,230 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 11:32:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390419035] [2023-08-27 11:32:47,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390419035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:47,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:47,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 11:32:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854070912] [2023-08-27 11:32:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:47,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:32:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:32:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:32:47,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 340 [2023-08-27 11:32:47,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 53 transitions, 443 flow. Second operand has 8 states, 8 states have (on average 122.5) internal successors, (980), 8 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:47,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:47,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 340 [2023-08-27 11:32:47,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:47,447 INFO L124 PetriNetUnfolderBase]: 27/136 cut-off events. [2023-08-27 11:32:47,447 INFO L125 PetriNetUnfolderBase]: For 660/660 co-relation queries the response was YES. [2023-08-27 11:32:47,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 136 events. 27/136 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 456 event pairs, 0 based on Foata normal form. 5/141 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2023-08-27 11:32:47,448 INFO L140 encePairwiseOnDemand]: 329/340 looper letters, 30 selfloop transitions, 17 changer transitions 14/67 dead transitions. [2023-08-27 11:32:47,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 67 transitions, 673 flow [2023-08-27 11:32:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:32:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:32:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1728 transitions. [2023-08-27 11:32:47,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3630252100840336 [2023-08-27 11:32:47,451 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1728 transitions. [2023-08-27 11:32:47,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1728 transitions. [2023-08-27 11:32:47,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:47,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1728 transitions. [2023-08-27 11:32:47,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 123.42857142857143) internal successors, (1728), 14 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:47,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 340.0) internal successors, (5100), 15 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:47,457 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 340.0) internal successors, (5100), 15 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:47,457 INFO L175 Difference]: Start difference. First operand has 141 places, 53 transitions, 443 flow. Second operand 14 states and 1728 transitions. [2023-08-27 11:32:47,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 67 transitions, 673 flow [2023-08-27 11:32:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 567 flow, removed 17 selfloop flow, removed 21 redundant places. [2023-08-27 11:32:47,460 INFO L231 Difference]: Finished difference. Result has 95 places, 44 transitions, 306 flow [2023-08-27 11:32:47,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=306, PETRI_PLACES=95, PETRI_TRANSITIONS=44} [2023-08-27 11:32:47,461 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-27 11:32:47,461 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 44 transitions, 306 flow [2023-08-27 11:32:47,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 122.5) internal successors, (980), 8 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:47,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:47,461 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:32:47,461 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 14 more)] === [2023-08-27 11:32:47,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1011299719, now seen corresponding path program 2 times [2023-08-27 11:32:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779617217] [2023-08-27 11:32:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:47,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779617217] [2023-08-27 11:32:47,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779617217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:32:47,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963313498] [2023-08-27 11:32:47,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:32:47,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:32:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:32:47,801 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 11:32:47,803 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 11:32:47,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:32:47,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:32:47,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-27 11:32:47,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:32:47,945 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:32:47,946 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 11:32:48,106 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 11:32:48,225 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 30 treesize of output 18 [2023-08-27 11:32:48,267 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 11:32:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:32:48,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:32:48,315 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1033 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483648))) is different from false [2023-08-27 11:32:48,325 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1031 Int) (v_ArrVal_1033 (Array Int Int))) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset v_ArrVal_1031)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483648)) (< v_ArrVal_1031 (+ |c_t_funThread1of2ForFork0_#t~post6| 1)))) is different from false [2023-08-27 11:32:48,333 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1031 Int) (v_ArrVal_1033 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base))) (or (< 0 (+ (select (select (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (store .cse0 c_t_funThread1of2ForFork0_~p~0.offset v_ArrVal_1031)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset) 2147483648)) (< v_ArrVal_1031 (+ (select .cse0 c_t_funThread1of2ForFork0_~p~0.offset) 1))))) is different from false [2023-08-27 11:32:48,356 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1031 Int) (v_ArrVal_1033 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#global~0.base|))) (or (< v_ArrVal_1031 (+ (select .cse0 |c_~#global~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#global~0.base| (store .cse0 |c_~#global~0.offset| v_ArrVal_1031)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483648))))) is different from false [2023-08-27 11:32:48,386 INFO L322 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2023-08-27 11:32:48,387 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 66 [2023-08-27 11:32:48,396 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:32:48,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 74 [2023-08-27 11:32:48,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2023-08-27 11:32:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-08-27 11:32:48,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963313498] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:32:48,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:32:48,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2023-08-27 11:32:48,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650393258] [2023-08-27 11:32:48,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:32:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-27 11:32:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:48,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-27 11:32:48,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=472, Unknown=4, NotChecked=188, Total=756 [2023-08-27 11:32:48,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 340 [2023-08-27 11:32:48,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 44 transitions, 306 flow. Second operand has 28 states, 28 states have (on average 112.25) internal successors, (3143), 28 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:48,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:48,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 340 [2023-08-27 11:32:48,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:32:49,207 INFO L124 PetriNetUnfolderBase]: 19/104 cut-off events. [2023-08-27 11:32:49,207 INFO L125 PetriNetUnfolderBase]: For 313/313 co-relation queries the response was YES. [2023-08-27 11:32:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 104 events. 19/104 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 288 event pairs, 2 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 442. Up to 19 conditions per place. [2023-08-27 11:32:49,208 INFO L140 encePairwiseOnDemand]: 327/340 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-08-27 11:32:49,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 51 transitions, 458 flow [2023-08-27 11:32:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:32:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:32:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1576 transitions. [2023-08-27 11:32:49,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310924369747899 [2023-08-27 11:32:49,210 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1576 transitions. [2023-08-27 11:32:49,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1576 transitions. [2023-08-27 11:32:49,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:32:49,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1576 transitions. [2023-08-27 11:32:49,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.57142857142857) internal successors, (1576), 14 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:49,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 340.0) internal successors, (5100), 15 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:49,213 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 340.0) internal successors, (5100), 15 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:49,214 INFO L175 Difference]: Start difference. First operand has 95 places, 44 transitions, 306 flow. Second operand 14 states and 1576 transitions. [2023-08-27 11:32:49,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 51 transitions, 458 flow [2023-08-27 11:32:49,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 51 transitions, 363 flow, removed 1 selfloop flow, removed 26 redundant places. [2023-08-27 11:32:49,215 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-27 11:32:49,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-27 11:32:49,216 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-27 11:32:49,216 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-27 11:32:49,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 112.25) internal successors, (3143), 28 states have internal predecessors, (3143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (14 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-08-27 11:32:49,217 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-08-27 11:32:49,218 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-08-27 11:32:49,225 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 11:32:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 11:32:49,424 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:32:49,424 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 (1/2) [2023-08-27 11:32:49,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,449 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 11:32:49,450 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:49,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 11:32:49,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:49,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 182 transitions, 382 flow [2023-08-27 11:32:49,476 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-27 11:32:49,476 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:32:49,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 968 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2023-08-27 11:32:49,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 13284 [2023-08-27 11:32:52,708 INFO L134 LiptonReduction]: Checked pairs total: 26514 [2023-08-27 11:32:52,708 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-27 11:32:52,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:32:52,709 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;@24e818a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:52,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:32:52,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:52,714 INFO L124 PetriNetUnfolderBase]: 12/63 cut-off events. [2023-08-27 11:32:52,714 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:32:52,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:52,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:32:52,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:32:52,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash -159805093, now seen corresponding path program 1 times [2023-08-27 11:32:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203973907] [2023-08-27 11:32:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:52,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:52,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:32:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:32:52,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:32:52,732 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:32:52,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:32:52,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 11:32:52,733 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:32:52,733 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:32:52,733 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:32:52,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:32:52,752 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:32:52,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,797 INFO L124 PetriNetUnfolderBase]: 54/463 cut-off events. [2023-08-27 11:32:52,797 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:32:52,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 54/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1662 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-27 11:32:52,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:32:52,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 480 flow [2023-08-27 11:32:52,870 INFO L124 PetriNetUnfolderBase]: 54/463 cut-off events. [2023-08-27 11:32:52,870 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:32:52,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 463 events. 54/463 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1662 event pairs, 1 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-27 11:32:52,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 25338 [2023-08-27 11:32:56,498 INFO L134 LiptonReduction]: Checked pairs total: 62479 [2023-08-27 11:32:56,498 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-08-27 11:32:56,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:32:56,499 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;@24e818a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:32:56,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 11:32:56,501 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:32:56,501 INFO L124 PetriNetUnfolderBase]: 3/14 cut-off events. [2023-08-27 11:32:56,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:32:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:32:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:32:56,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:32:56,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:32:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash 50848807, now seen corresponding path program 1 times [2023-08-27 11:32:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:32:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894770862] [2023-08-27 11:32:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:32:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:32:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:32:56,517 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 11:32:56,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:32:56,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894770862] [2023-08-27 11:32:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894770862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:32:56,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:32:56,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:32:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619530504] [2023-08-27 11:32:56,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:32:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:32:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:32:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:32:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:32:56,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 417 [2023-08-27 11:32:56,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 91 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:32:56,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:32:56,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 417 [2023-08-27 11:32:56,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:04,825 INFO L124 PetriNetUnfolderBase]: 107413/153779 cut-off events. [2023-08-27 11:33:04,825 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2023-08-27 11:33:05,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304358 conditions, 153779 events. 107413/153779 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 4149. Compared 1171571 event pairs, 69876 based on Foata normal form. 16908/120054 useless extension candidates. Maximal degree in co-relation 26680. Up to 148930 conditions per place. [2023-08-27 11:33:05,626 INFO L140 encePairwiseOnDemand]: 391/417 looper letters, 74 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-27 11:33:05,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 352 flow [2023-08-27 11:33:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-08-27 11:33:05,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.530775379696243 [2023-08-27 11:33:05,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-08-27 11:33:05,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-08-27 11:33:05,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:05,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-08-27 11:33:05,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,629 INFO L175 Difference]: Start difference. First operand has 74 places, 91 transitions, 212 flow. Second operand 3 states and 664 transitions. [2023-08-27 11:33:05,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 352 flow [2023-08-27 11:33:05,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:33:05,632 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 186 flow [2023-08-27 11:33:05,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-08-27 11:33:05,632 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 3 predicate places. [2023-08-27 11:33:05,633 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 186 flow [2023-08-27 11:33:05,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:05,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:33:05,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:33:05,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1650740288, now seen corresponding path program 1 times [2023-08-27 11:33:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:05,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521637226] [2023-08-27 11:33:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:05,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:05,680 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 11:33:05,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:05,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521637226] [2023-08-27 11:33:05,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521637226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:05,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:05,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:33:05,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136980920] [2023-08-27 11:33:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:33:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:33:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:33:05,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 417 [2023-08-27 11:33:05,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:05,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:05,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 417 [2023-08-27 11:33:05,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:18,215 INFO L124 PetriNetUnfolderBase]: 158285/228096 cut-off events. [2023-08-27 11:33:18,215 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2023-08-27 11:33:18,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463645 conditions, 228096 events. 158285/228096 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 6211. Compared 1853685 event pairs, 43379 based on Foata normal form. 0/160301 useless extension candidates. Maximal degree in co-relation 463556. Up to 144616 conditions per place. [2023-08-27 11:33:19,478 INFO L140 encePairwiseOnDemand]: 403/417 looper letters, 186 selfloop transitions, 24 changer transitions 0/219 dead transitions. [2023-08-27 11:33:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 219 transitions, 963 flow [2023-08-27 11:33:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:33:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:33:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1161 transitions. [2023-08-27 11:33:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46402877697841727 [2023-08-27 11:33:19,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1161 transitions. [2023-08-27 11:33:19,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1161 transitions. [2023-08-27 11:33:19,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:19,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1161 transitions. [2023-08-27 11:33:19,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:19,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:19,483 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:19,483 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 186 flow. Second operand 6 states and 1161 transitions. [2023-08-27 11:33:19,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 219 transitions, 963 flow [2023-08-27 11:33:19,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 219 transitions, 959 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:33:19,524 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 360 flow [2023-08-27 11:33:19,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=360, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2023-08-27 11:33:19,524 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-27 11:33:19,524 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 360 flow [2023-08-27 11:33:19,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:19,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:19,525 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:33:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-27 11:33:19,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:33:19,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2070945156, now seen corresponding path program 1 times [2023-08-27 11:33:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462907283] [2023-08-27 11:33:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:33:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462907283] [2023-08-27 11:33:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462907283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:33:19,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088775209] [2023-08-27 11:33:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:19,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:19,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:19,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:19,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:19,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 417 [2023-08-27 11:33:19,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:19,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:19,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 417 [2023-08-27 11:33:19,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:33,106 INFO L124 PetriNetUnfolderBase]: 149917/214252 cut-off events. [2023-08-27 11:33:33,106 INFO L125 PetriNetUnfolderBase]: For 76886/76886 co-relation queries the response was YES. [2023-08-27 11:33:33,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518931 conditions, 214252 events. 149917/214252 cut-off events. For 76886/76886 co-relation queries the response was YES. Maximal size of possible extension queue 5855. Compared 1722647 event pairs, 48315 based on Foata normal form. 0/165642 useless extension candidates. Maximal degree in co-relation 409178. Up to 177914 conditions per place. [2023-08-27 11:33:34,460 INFO L140 encePairwiseOnDemand]: 413/417 looper letters, 126 selfloop transitions, 5 changer transitions 0/140 dead transitions. [2023-08-27 11:33:34,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 140 transitions, 764 flow [2023-08-27 11:33:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-27 11:33:34,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267785771382894 [2023-08-27 11:33:34,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-27 11:33:34,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-27 11:33:34,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:34,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-27 11:33:34,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:34,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:34,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:34,463 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 360 flow. Second operand 3 states and 659 transitions. [2023-08-27 11:33:34,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 140 transitions, 764 flow [2023-08-27 11:33:34,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:33:34,602 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 377 flow [2023-08-27 11:33:34,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2023-08-27 11:33:34,602 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-08-27 11:33:34,602 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 377 flow [2023-08-27 11:33:34,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:34,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:34,603 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:33:34,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:33:34,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:33:34,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2070945157, now seen corresponding path program 1 times [2023-08-27 11:33:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128233922] [2023-08-27 11:33:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:33:34,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:34,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128233922] [2023-08-27 11:33:34,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128233922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:33:34,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:33:34,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:33:34,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945988092] [2023-08-27 11:33:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:33:34,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:33:34,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:33:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:33:34,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 417 [2023-08-27 11:33:34,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:34,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:34,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 417 [2023-08-27 11:33:34,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:33:47,496 INFO L124 PetriNetUnfolderBase]: 141549/202853 cut-off events. [2023-08-27 11:33:47,496 INFO L125 PetriNetUnfolderBase]: For 104993/104993 co-relation queries the response was YES. [2023-08-27 11:33:48,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499664 conditions, 202853 events. 141549/202853 cut-off events. For 104993/104993 co-relation queries the response was YES. Maximal size of possible extension queue 5558. Compared 1630879 event pairs, 48326 based on Foata normal form. 3066/162709 useless extension candidates. Maximal degree in co-relation 393240. Up to 166457 conditions per place. [2023-08-27 11:33:48,737 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 128 selfloop transitions, 2 changer transitions 0/139 dead transitions. [2023-08-27 11:33:48,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 775 flow [2023-08-27 11:33:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:33:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:33:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-27 11:33:48,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251798561151079 [2023-08-27 11:33:48,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-27 11:33:48,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-27 11:33:48,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:33:48,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-27 11:33:48,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:48,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:48,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:48,740 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 377 flow. Second operand 3 states and 657 transitions. [2023-08-27 11:33:48,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 775 flow [2023-08-27 11:33:49,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 770 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:33:49,142 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 372 flow [2023-08-27 11:33:49,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2023-08-27 11:33:49,142 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-08-27 11:33:49,143 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 372 flow [2023-08-27 11:33:49,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:49,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:33:49,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:33:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 11:33:49,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:33:49,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:33:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 208601473, now seen corresponding path program 1 times [2023-08-27 11:33:49,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:33:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55170668] [2023-08-27 11:33:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:33:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:49,212 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 11:33:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:33:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55170668] [2023-08-27 11:33:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55170668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:33:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612498507] [2023-08-27 11:33:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:33:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:33:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:33:49,217 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 11:33:49,246 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 11:33:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:33:49,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:33:49,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:33:49,367 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:33:49,368 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 11:33:49,388 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 11:33:49,450 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 11:33:49,464 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 11:33:49,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:33:49,508 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1089 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1089) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2023-08-27 11:33:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:33:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612498507] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:33:49,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:33:49,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 11:33:49,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857034460] [2023-08-27 11:33:49,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:33:49,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 11:33:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:33:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 11:33:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=63, Unknown=3, NotChecked=16, Total=110 [2023-08-27 11:33:49,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 417 [2023-08-27 11:33:49,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 372 flow. Second operand has 11 states, 11 states have (on average 160.1818181818182) internal successors, (1762), 11 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:33:49,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:33:49,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 417 [2023-08-27 11:33:49,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:03,881 INFO L124 PetriNetUnfolderBase]: 148591/217009 cut-off events. [2023-08-27 11:34:03,881 INFO L125 PetriNetUnfolderBase]: For 118220/118220 co-relation queries the response was YES. [2023-08-27 11:34:04,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530402 conditions, 217009 events. 148591/217009 cut-off events. For 118220/118220 co-relation queries the response was YES. Maximal size of possible extension queue 6110. Compared 1775560 event pairs, 58380 based on Foata normal form. 421/171863 useless extension candidates. Maximal degree in co-relation 418088. Up to 179085 conditions per place. [2023-08-27 11:34:05,450 INFO L140 encePairwiseOnDemand]: 405/417 looper letters, 166 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2023-08-27 11:34:05,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 205 transitions, 1152 flow [2023-08-27 11:34:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:34:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:34:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1119 transitions. [2023-08-27 11:34:05,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.447242206235012 [2023-08-27 11:34:05,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1119 transitions. [2023-08-27 11:34:05,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1119 transitions. [2023-08-27 11:34:05,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:05,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1119 transitions. [2023-08-27 11:34:05,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.5) internal successors, (1119), 6 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:05,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:05,455 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:05,455 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 372 flow. Second operand 6 states and 1119 transitions. [2023-08-27 11:34:05,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 205 transitions, 1152 flow [2023-08-27 11:34:06,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 205 transitions, 1142 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:34:06,046 INFO L231 Difference]: Finished difference. Result has 94 places, 111 transitions, 586 flow [2023-08-27 11:34:06,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=94, PETRI_TRANSITIONS=111} [2023-08-27 11:34:06,047 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2023-08-27 11:34:06,047 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 586 flow [2023-08-27 11:34:06,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.1818181818182) internal successors, (1762), 11 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:06,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:06,047 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:06,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 11:34:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:06,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:34:06,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1598780792, now seen corresponding path program 1 times [2023-08-27 11:34:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887249128] [2023-08-27 11:34:06,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:34:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887249128] [2023-08-27 11:34:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887249128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:34:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944316105] [2023-08-27 11:34:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:06,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:06,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:34:06,307 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 11:34:06,316 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 11:34:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:06,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:34:06,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:34:06,440 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:34:06,440 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 11:34:06,457 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 11:34:06,478 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 14 treesize of output 16 [2023-08-27 11:34:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:34:06,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:34:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 11:34:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944316105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:34:06,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:34:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-27 11:34:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254632612] [2023-08-27 11:34:06,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:34:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 11:34:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 11:34:06,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2023-08-27 11:34:06,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 417 [2023-08-27 11:34:06,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 160.45454545454547) internal successors, (1765), 11 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:06,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:06,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 417 [2023-08-27 11:34:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:34:36,258 INFO L124 PetriNetUnfolderBase]: 252676/369627 cut-off events. [2023-08-27 11:34:36,259 INFO L125 PetriNetUnfolderBase]: For 342662/342662 co-relation queries the response was YES. [2023-08-27 11:34:37,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956794 conditions, 369627 events. 252676/369627 cut-off events. For 342662/342662 co-relation queries the response was YES. Maximal size of possible extension queue 11317. Compared 3258621 event pairs, 26460 based on Foata normal form. 0/302541 useless extension candidates. Maximal degree in co-relation 838995. Up to 112681 conditions per place. [2023-08-27 11:34:38,960 INFO L140 encePairwiseOnDemand]: 402/417 looper letters, 485 selfloop transitions, 180 changer transitions 0/674 dead transitions. [2023-08-27 11:34:38,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 674 transitions, 4198 flow [2023-08-27 11:34:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-27 11:34:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-27 11:34:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3268 transitions. [2023-08-27 11:34:38,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609959091550289 [2023-08-27 11:34:38,963 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3268 transitions. [2023-08-27 11:34:38,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3268 transitions. [2023-08-27 11:34:38,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:34:38,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3268 transitions. [2023-08-27 11:34:38,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 192.23529411764707) internal successors, (3268), 17 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:38,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 417.0) internal successors, (7506), 18 states have internal predecessors, (7506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:38,972 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 417.0) internal successors, (7506), 18 states have internal predecessors, (7506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:38,972 INFO L175 Difference]: Start difference. First operand has 94 places, 111 transitions, 586 flow. Second operand 17 states and 3268 transitions. [2023-08-27 11:34:38,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 674 transitions, 4198 flow [2023-08-27 11:34:39,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 674 transitions, 4198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:34:39,556 INFO L231 Difference]: Finished difference. Result has 124 places, 261 transitions, 2349 flow [2023-08-27 11:34:39,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2349, PETRI_PLACES=124, PETRI_TRANSITIONS=261} [2023-08-27 11:34:39,556 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 50 predicate places. [2023-08-27 11:34:39,556 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 261 transitions, 2349 flow [2023-08-27 11:34:39,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.45454545454547) internal successors, (1765), 11 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:39,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:34:39,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:34:39,561 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 11:34:39,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:34:39,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:34:39,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:34:39,758 INFO L85 PathProgramCache]: Analyzing trace with hash 986026656, now seen corresponding path program 1 times [2023-08-27 11:34:39,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:34:39,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836798060] [2023-08-27 11:34:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:34:39,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:34:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:34:39,793 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 11:34:39,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:34:39,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836798060] [2023-08-27 11:34:39,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836798060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:34:39,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:34:39,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:34:39,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913311090] [2023-08-27 11:34:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:34:39,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:34:39,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:34:39,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:34:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:34:39,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 417 [2023-08-27 11:34:39,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 261 transitions, 2349 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:34:39,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:34:39,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 417 [2023-08-27 11:34:39,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:35:27,169 INFO L124 PetriNetUnfolderBase]: 304950/444312 cut-off events. [2023-08-27 11:35:27,169 INFO L125 PetriNetUnfolderBase]: For 1404040/1404040 co-relation queries the response was YES. [2023-08-27 11:35:29,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488351 conditions, 444312 events. 304950/444312 cut-off events. For 1404040/1404040 co-relation queries the response was YES. Maximal size of possible extension queue 13530. Compared 3991693 event pairs, 174721 based on Foata normal form. 0/389562 useless extension candidates. Maximal degree in co-relation 1403326. Up to 297148 conditions per place. [2023-08-27 11:35:31,957 INFO L140 encePairwiseOnDemand]: 410/417 looper letters, 306 selfloop transitions, 66 changer transitions 0/381 dead transitions. [2023-08-27 11:35:31,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 381 transitions, 3980 flow [2023-08-27 11:35:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:35:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:35:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2023-08-27 11:35:31,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812150279776179 [2023-08-27 11:35:31,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2023-08-27 11:35:31,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2023-08-27 11:35:31,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:35:31,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2023-08-27 11:35:31,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:31,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:31,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:35:31,960 INFO L175 Difference]: Start difference. First operand has 124 places, 261 transitions, 2349 flow. Second operand 3 states and 602 transitions. [2023-08-27 11:35:31,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 381 transitions, 3980 flow [2023-08-27 11:37:58,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 381 transitions, 3845 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:58,811 INFO L231 Difference]: Finished difference. Result has 127 places, 286 transitions, 2802 flow [2023-08-27 11:37:58,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2802, PETRI_PLACES=127, PETRI_TRANSITIONS=286} [2023-08-27 11:37:58,811 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 53 predicate places. [2023-08-27 11:37:58,811 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 286 transitions, 2802 flow [2023-08-27 11:37:58,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:58,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:58,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:58,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-27 11:37:58,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:37:58,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash 986026643, now seen corresponding path program 1 times [2023-08-27 11:37:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786791497] [2023-08-27 11:37:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:58,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:58,893 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 11:37:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786791497] [2023-08-27 11:37:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786791497] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:58,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614997823] [2023-08-27 11:37:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:37:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:37:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:37:58,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 417 [2023-08-27 11:37:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 286 transitions, 2802 flow. Second operand has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 417 [2023-08-27 11:37:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:39:09,924 INFO L124 PetriNetUnfolderBase]: 422134/616260 cut-off events. [2023-08-27 11:39:09,924 INFO L125 PetriNetUnfolderBase]: For 2375617/2375617 co-relation queries the response was YES. [2023-08-27 11:39:13,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141635 conditions, 616260 events. 422134/616260 cut-off events. For 2375617/2375617 co-relation queries the response was YES. Maximal size of possible extension queue 19267. Compared 5728463 event pairs, 98980 based on Foata normal form. 6430/554816 useless extension candidates. Maximal degree in co-relation 2019751. Up to 305855 conditions per place. [2023-08-27 11:39:16,553 INFO L140 encePairwiseOnDemand]: 401/417 looper letters, 654 selfloop transitions, 325 changer transitions 0/988 dead transitions. [2023-08-27 11:39:16,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 988 transitions, 9478 flow [2023-08-27 11:39:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:39:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:39:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2799 transitions. [2023-08-27 11:39:16,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474820143884892 [2023-08-27 11:39:16,556 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2799 transitions. [2023-08-27 11:39:16,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2799 transitions. [2023-08-27 11:39:16,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:39:16,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2799 transitions. [2023-08-27 11:39:16,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 186.6) internal successors, (2799), 15 states have internal predecessors, (2799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:39:16,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 417.0) internal successors, (6672), 16 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:39:16,564 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 417.0) internal successors, (6672), 16 states have internal predecessors, (6672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:39:16,564 INFO L175 Difference]: Start difference. First operand has 127 places, 286 transitions, 2802 flow. Second operand 15 states and 2799 transitions. [2023-08-27 11:39:16,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 988 transitions, 9478 flow [2023-08-27 11:44:10,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 988 transitions, 9224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:44:10,332 INFO L231 Difference]: Finished difference. Result has 146 places, 492 transitions, 6016 flow [2023-08-27 11:44:10,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6016, PETRI_PLACES=146, PETRI_TRANSITIONS=492} [2023-08-27 11:44:10,333 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 72 predicate places. [2023-08-27 11:44:10,333 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 492 transitions, 6016 flow [2023-08-27 11:44:10,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.28571428571428) internal successors, (1073), 7 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:10,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:44:10,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:44:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 11:44:10,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 11:44:10,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:44:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1997227230, now seen corresponding path program 1 times [2023-08-27 11:44:10,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:44:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010676856] [2023-08-27 11:44:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:44:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:44:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:44:10,358 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 11:44:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:44:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010676856] [2023-08-27 11:44:10,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010676856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:44:10,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591308370] [2023-08-27 11:44:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:44:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:44:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:44:10,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:44:10,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 11:44:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:44:10,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:44:10,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:44:10,502 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 11:44:10,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:44:10,516 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 11:44:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591308370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:44:10,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:44:10,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:44:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395429579] [2023-08-27 11:44:10,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:44:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:44:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:44:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:44:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:44:10,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 417 [2023-08-27 11:44:10,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 492 transitions, 6016 flow. Second operand has 7 states, 7 states have (on average 188.85714285714286) internal successors, (1322), 7 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:10,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:44:10,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 417 [2023-08-27 11:44:10,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:44:20,812 INFO L124 PetriNetUnfolderBase]: 57337/87383 cut-off events. [2023-08-27 11:44:20,813 INFO L125 PetriNetUnfolderBase]: For 463340/463340 co-relation queries the response was YES. [2023-08-27 11:44:21,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377533 conditions, 87383 events. 57337/87383 cut-off events. For 463340/463340 co-relation queries the response was YES. Maximal size of possible extension queue 3723. Compared 724661 event pairs, 6669 based on Foata normal form. 8137/86151 useless extension candidates. Maximal degree in co-relation 363305. Up to 57821 conditions per place. [2023-08-27 11:44:21,958 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 470 selfloop transitions, 4 changer transitions 0/482 dead transitions. [2023-08-27 11:44:21,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 482 transitions, 6237 flow [2023-08-27 11:44:21,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:44:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:44:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1243 transitions. [2023-08-27 11:44:21,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968025579536371 [2023-08-27 11:44:21,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1243 transitions. [2023-08-27 11:44:21,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1243 transitions. [2023-08-27 11:44:21,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:44:21,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1243 transitions. [2023-08-27 11:44:21,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.16666666666666) internal successors, (1243), 6 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:21,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:21,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:44:21,962 INFO L175 Difference]: Start difference. First operand has 146 places, 492 transitions, 6016 flow. Second operand 6 states and 1243 transitions. [2023-08-27 11:44:21,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 482 transitions, 6237 flow Received shutdown request... [2023-08-27 11:44:27,877 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:44:27,877 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 11:44:28,082 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-27 11:44:28,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 11:44:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-27 11:44:28,283 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 11:44:28,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 11:44:28,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 11:44:28,283 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 11:44:28,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 11:44:28,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 11:44:28,285 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:44:28,286 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-27 11:44:28,286 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-08-27 11:44:28,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:44:28,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:44:28 BasicIcfg [2023-08-27 11:44:28,292 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:44:28,292 INFO L158 Benchmark]: Toolchain (without parser) took 765341.45ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 344.2MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:44:28,292 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory is still 345.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:44:28,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.17ms. Allocated memory is still 369.1MB. Free memory was 344.2MB in the beginning and 324.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 11:44:28,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.34ms. Allocated memory is still 369.1MB. Free memory was 324.3MB in the beginning and 322.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:44:28,293 INFO L158 Benchmark]: Boogie Preprocessor took 46.58ms. Allocated memory is still 369.1MB. Free memory was 322.2MB in the beginning and 320.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:44:28,293 INFO L158 Benchmark]: RCFGBuilder took 464.09ms. Allocated memory is still 369.1MB. Free memory was 320.2MB in the beginning and 345.8MB in the end (delta: -25.6MB). Peak memory consumption was 22.8MB. Max. memory is 16.0GB. [2023-08-27 11:44:28,293 INFO L158 Benchmark]: TraceAbstraction took 764285.35ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 345.0MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-27 11:44:28,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 369.1MB. Free memory is still 345.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 482.17ms. Allocated memory is still 369.1MB. Free memory was 344.2MB in the beginning and 324.3MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.34ms. Allocated memory is still 369.1MB. Free memory was 324.3MB in the beginning and 322.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.58ms. Allocated memory is still 369.1MB. Free memory was 322.2MB in the beginning and 320.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 464.09ms. Allocated memory is still 369.1MB. Free memory was 320.2MB in the beginning and 345.8MB in the end (delta: -25.6MB). Peak memory consumption was 22.8MB. Max. memory is 16.0GB. * TraceAbstraction took 764285.35ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 345.0MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 127 PlacesBefore, 36 PlacesAfterwards, 136 TransitionsBefore, 41 TransitionsAfterwards, 4182 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 4 ChoiceCompositions, 124 TotalNumberOfCompositions, 7472 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3837, independent: 3634, independent conditional: 0, independent unconditional: 3634, dependent: 203, dependent conditional: 0, dependent unconditional: 203, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2280, independent: 2238, independent conditional: 0, independent unconditional: 2238, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3837, independent: 1396, independent conditional: 0, independent unconditional: 1396, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 2280, unknown conditional: 0, unknown unconditional: 2280] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 121 PlacesBefore, 33 PlacesAfterwards, 130 TransitionsBefore, 38 TransitionsAfterwards, 4182 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 120 TotalNumberOfCompositions, 7162 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3946, independent: 3752, independent conditional: 0, independent unconditional: 3752, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2270, independent: 2230, independent conditional: 0, independent unconditional: 2230, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3946, independent: 1522, independent conditional: 0, independent unconditional: 1522, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 2270, unknown conditional: 0, unknown unconditional: 2270] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 167 PlacesBefore, 56 PlacesAfterwards, 182 TransitionsBefore, 68 TransitionsAfterwards, 13284 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 102 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 158 TotalNumberOfCompositions, 29007 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12886, independent: 12501, independent conditional: 0, independent unconditional: 12501, dependent: 385, dependent conditional: 0, dependent unconditional: 385, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6738, independent: 6676, independent conditional: 0, independent unconditional: 6676, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12886, independent: 5825, independent conditional: 0, independent unconditional: 5825, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 6738, unknown conditional: 0, unknown unconditional: 6738] , Statistics on independence cache: Total cache size (in pairs): 321, Positive cache size: 288, Positive conditional cache size: 0, Positive unconditional cache size: 288, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 167 PlacesBefore, 56 PlacesAfterwards, 182 TransitionsBefore, 68 TransitionsAfterwards, 13284 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 103 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 159 TotalNumberOfCompositions, 26514 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12150, independent: 11822, independent conditional: 0, independent unconditional: 11822, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6775, independent: 6707, independent conditional: 0, independent unconditional: 6707, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12150, independent: 5115, independent conditional: 0, independent unconditional: 5115, dependent: 260, dependent conditional: 0, dependent unconditional: 260, unknown: 6775, unknown conditional: 0, unknown unconditional: 6775] , Statistics on independence cache: Total cache size (in pairs): 343, Positive cache size: 307, Positive conditional cache size: 0, Positive unconditional cache size: 307, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 205 PlacesBefore, 74 PlacesAfterwards, 225 TransitionsBefore, 91 TransitionsAfterwards, 25338 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 132 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 192 TotalNumberOfCompositions, 62479 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23972, independent: 23408, independent conditional: 0, independent unconditional: 23408, dependent: 564, dependent conditional: 0, dependent unconditional: 564, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12956, independent: 12834, independent conditional: 0, independent unconditional: 12834, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23972, independent: 10574, independent conditional: 0, independent unconditional: 10574, dependent: 442, dependent conditional: 0, dependent unconditional: 442, unknown: 12956, unknown conditional: 0, unknown unconditional: 12956] , Statistics on independence cache: Total cache size (in pairs): 594, Positive cache size: 546, Positive conditional cache size: 0, Positive unconditional cache size: 546, Negative cache size: 48, Negative conditional cache size: 0, Negative unconditional cache size: 48, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 690]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 708]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 703]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 708]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 163 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.3s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 104 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 913 IncrementalHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 0 mSDtfsCounter, 913 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=5, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 158 ConstructedInterpolants, 20 QuantifiedInterpolants, 1628 SizeOfPredicates, 11 NumberOfNonLiveVariables, 637 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 0/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 199 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 54.1s, OverallIterations: 28, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 2566 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2566 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 876 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 373 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8342 IncrementalHoareTripleChecker+Invalid, 9596 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 373 mSolverCounterUnsat, 0 mSDtfsCounter, 8342 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 832 GetRequests, 380 SyntacticMatches, 16 SemanticMatches, 436 ConstructedPredicates, 12 IntricatePredicates, 3 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5773occurred in iteration=14, InterpolantAutomatonStates: 294, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 26.4s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 916 ConstructedInterpolants, 80 QuantifiedInterpolants, 9823 SizeOfPredicates, 82 NumberOfNonLiveVariables, 2547 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 54 InterpolantComputations, 15 PerfectInterpolantSequences, 86/140 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 235 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 695.5s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 690.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 58 mSolverCounterUnknown, 1485 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1485 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 163 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4365 IncrementalHoareTripleChecker+Invalid, 4660 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 0 mSDtfsCounter, 4365 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6016occurred in iteration=8, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 138 ConstructedInterpolants, 13 QuantifiedInterpolants, 976 SizeOfPredicates, 6 NumberOfNonLiveVariables, 461 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 163 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 199 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown