/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_22-deref_read_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:36:07,930 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:36:07,997 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 11:36:08,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:36:08,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:36:08,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:36:08,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:36:08,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:36:08,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:36:08,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:36:08,029 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:36:08,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:36:08,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:36:08,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:36:08,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:36:08,031 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:36:08,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:36:08,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:36:08,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:36:08,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:36:08,033 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:36:08,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:36:08,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:36:08,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:36:08,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:36:08,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:36:08,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:36:08,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:36:08,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:36:08,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:36:08,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:36:08,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:36:08,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:36:08,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:36:08,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:36:08,285 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:36:08,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-27 11:36:09,255 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:36:09,473 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:36:09,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-27 11:36:09,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c833326b/e2495a749ab447c7b31ec2677d026bbc/FLAG2f2017ab8 [2023-08-27 11:36:09,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c833326b/e2495a749ab447c7b31ec2677d026bbc [2023-08-27 11:36:09,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:36:09,502 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:36:09,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:36:09,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:36:09,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:36:09,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09, skipping insertion in model container [2023-08-27 11:36:09,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,550 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:36:09,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:36:09,809 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:36:09,829 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:36:09,831 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:36:09,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:36:09,866 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:36:09,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09 WrapperNode [2023-08-27 11:36:09,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:36:09,867 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:36:09,867 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:36:09,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:36:09,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,895 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-08-27 11:36:09,895 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:36:09,896 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:36:09,896 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:36:09,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:36:09,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:36:09,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:36:09,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:36:09,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:36:09,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (1/1) ... [2023-08-27 11:36:09,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:36:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:09,946 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 11:36:09,953 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 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:36:09,969 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:36:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:36:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:36:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:36:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:36:09,971 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 11:36:10,052 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:36:10,053 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:36:10,194 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:36:10,199 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:36:10,199 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-27 11:36:10,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:36:10 BoogieIcfgContainer [2023-08-27 11:36:10,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:36:10,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:36:10,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:36:10,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:36:10,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:36:09" (1/3) ... [2023-08-27 11:36:10,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b51e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:36:10, skipping insertion in model container [2023-08-27 11:36:10,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:36:09" (2/3) ... [2023-08-27 11:36:10,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b51e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:36:10, skipping insertion in model container [2023-08-27 11:36:10,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:36:10" (3/3) ... [2023-08-27 11:36:10,205 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-27 11:36:10,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:36:10,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 11:36:10,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:36:10,266 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:36:10,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,340 INFO L124 PetriNetUnfolderBase]: 16/153 cut-off events. [2023-08-27 11:36:10,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:10,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 153 events. 16/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-08-27 11:36:10,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:36:10,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:10,428 INFO L124 PetriNetUnfolderBase]: 16/153 cut-off events. [2023-08-27 11:36:10,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:10,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 153 events. 16/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-08-27 11:36:10,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 3680 [2023-08-27 11:36:12,764 INFO L134 LiptonReduction]: Checked pairs total: 6896 [2023-08-27 11:36:12,764 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 11:36:12,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:36:12,778 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:36:12,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-27 11:36:12,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:36:12,781 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-27 11:36:12,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:12,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:12,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:36:12,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:12,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 14251442, now seen corresponding path program 1 times [2023-08-27 11:36:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516470422] [2023-08-27 11:36:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:13,001 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 11:36:13,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:13,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516470422] [2023-08-27 11:36:13,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516470422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:13,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:13,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:36:13,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920668481] [2023-08-27 11:36:13,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:13,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:13,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 230 [2023-08-27 11:36:13,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 37 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:13,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 230 [2023-08-27 11:36:13,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:13,126 INFO L124 PetriNetUnfolderBase]: 104/244 cut-off events. [2023-08-27 11:36:13,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:13,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 244 events. 104/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 907 event pairs, 84 based on Foata normal form. 18/198 useless extension candidates. Maximal degree in co-relation 468. Up to 217 conditions per place. [2023-08-27 11:36:13,133 INFO L140 encePairwiseOnDemand]: 216/230 looper letters, 35 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-27 11:36:13,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 159 flow [2023-08-27 11:36:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-27 11:36:13,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4971014492753623 [2023-08-27 11:36:13,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-27 11:36:13,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-27 11:36:13,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:13,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-27 11:36:13,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,155 INFO L175 Difference]: Start difference. First operand has 31 places, 37 transitions, 79 flow. Second operand 3 states and 343 transitions. [2023-08-27 11:36:13,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 159 flow [2023-08-27 11:36:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 159 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:36:13,159 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 65 flow [2023-08-27 11:36:13,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-27 11:36:13,162 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-27 11:36:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 65 flow [2023-08-27 11:36:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:13,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:36:13,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:13,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -636529543, now seen corresponding path program 1 times [2023-08-27 11:36:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122529269] [2023-08-27 11:36:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:13,303 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 11:36:13,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122529269] [2023-08-27 11:36:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122529269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:13,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:13,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089942632] [2023-08-27 11:36:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:13,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:13,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 230 [2023-08-27 11:36:13,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:13,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 230 [2023-08-27 11:36:13,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:13,366 INFO L124 PetriNetUnfolderBase]: 88/210 cut-off events. [2023-08-27 11:36:13,366 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 11:36:13,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 210 events. 88/210 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 751 event pairs, 28 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 435. Up to 137 conditions per place. [2023-08-27 11:36:13,369 INFO L140 encePairwiseOnDemand]: 225/230 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-27 11:36:13,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 156 flow [2023-08-27 11:36:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:36:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:36:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-27 11:36:13,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38369565217391305 [2023-08-27 11:36:13,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-27 11:36:13,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-27 11:36:13,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:13,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-27 11:36:13,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,379 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 65 flow. Second operand 4 states and 353 transitions. [2023-08-27 11:36:13,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 156 flow [2023-08-27 11:36:13,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:36:13,380 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 74 flow [2023-08-27 11:36:13,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-27 11:36:13,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-27 11:36:13,381 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 74 flow [2023-08-27 11:36:13,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:13,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:13,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:36:13,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:13,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:13,387 INFO L85 PathProgramCache]: Analyzing trace with hash -635777698, now seen corresponding path program 1 times [2023-08-27 11:36:13,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:13,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263426447] [2023-08-27 11:36:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:13,444 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 11:36:13,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263426447] [2023-08-27 11:36:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263426447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763817991] [2023-08-27 11:36:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:13,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:13,462 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 11:36:13,500 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 11:36:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:13,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:36:13,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:13,586 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 11:36:13,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:13,601 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 11:36:13,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763817991] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:13,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:13,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:36:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31934255] [2023-08-27 11:36:13,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:13,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:36:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:36:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:36:13,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 230 [2023-08-27 11:36:13,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:13,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 230 [2023-08-27 11:36:13,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:13,641 INFO L124 PetriNetUnfolderBase]: 22/66 cut-off events. [2023-08-27 11:36:13,641 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:36:13,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 66 events. 22/66 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 10 based on Foata normal form. 12/72 useless extension candidates. Maximal degree in co-relation 136. Up to 46 conditions per place. [2023-08-27 11:36:13,641 INFO L140 encePairwiseOnDemand]: 227/230 looper letters, 17 selfloop transitions, 2 changer transitions 8/30 dead transitions. [2023-08-27 11:36:13,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 30 transitions, 130 flow [2023-08-27 11:36:13,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:36:13,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:36:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-08-27 11:36:13,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44782608695652176 [2023-08-27 11:36:13,643 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-08-27 11:36:13,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-08-27 11:36:13,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:13,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-08-27 11:36:13,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,646 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 230.0) internal successors, (1150), 5 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,646 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 74 flow. Second operand 4 states and 412 transitions. [2023-08-27 11:36:13,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 30 transitions, 130 flow [2023-08-27 11:36:13,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 119 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:36:13,647 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 37 flow [2023-08-27 11:36:13,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-08-27 11:36:13,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -7 predicate places. [2023-08-27 11:36:13,649 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 37 flow [2023-08-27 11:36:13,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:13,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:13,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:13,654 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 11:36:13,854 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 11:36:13,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:13,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -545490890, now seen corresponding path program 1 times [2023-08-27 11:36:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:13,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204237233] [2023-08-27 11:36:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:14,030 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 11:36:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204237233] [2023-08-27 11:36:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204237233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:36:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393777341] [2023-08-27 11:36:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:14,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:36:14,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 230 [2023-08-27 11:36:14,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 37 flow. Second operand has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:14,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 230 [2023-08-27 11:36:14,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:14,074 INFO L124 PetriNetUnfolderBase]: 11/48 cut-off events. [2023-08-27 11:36:14,074 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:36:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 48 events. 11/48 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 4 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 81. Up to 15 conditions per place. [2023-08-27 11:36:14,075 INFO L140 encePairwiseOnDemand]: 223/230 looper letters, 11 selfloop transitions, 8 changer transitions 0/22 dead transitions. [2023-08-27 11:36:14,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 97 flow [2023-08-27 11:36:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:36:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:36:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 531 transitions. [2023-08-27 11:36:14,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298136645962733 [2023-08-27 11:36:14,077 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 531 transitions. [2023-08-27 11:36:14,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 531 transitions. [2023-08-27 11:36:14,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:14,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 531 transitions. [2023-08-27 11:36:14,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,081 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 230.0) internal successors, (1840), 8 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,081 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 37 flow. Second operand 7 states and 531 transitions. [2023-08-27 11:36:14,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 97 flow [2023-08-27 11:36:14,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:36:14,082 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 76 flow [2023-08-27 11:36:14,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-27 11:36:14,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -4 predicate places. [2023-08-27 11:36:14,082 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 76 flow [2023-08-27 11:36:14,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:14,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:36:14,083 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:14,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:14,083 INFO L85 PathProgramCache]: Analyzing trace with hash -545490879, now seen corresponding path program 1 times [2023-08-27 11:36:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:14,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51071877] [2023-08-27 11:36:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:14,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:14,140 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 11:36:14,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:14,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51071877] [2023-08-27 11:36:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51071877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:14,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:14,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363127161] [2023-08-27 11:36:14,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:14,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 230 [2023-08-27 11:36:14,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:14,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 230 [2023-08-27 11:36:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:14,165 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2023-08-27 11:36:14,165 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-27 11:36:14,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 42 events. 9/42 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 6 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 100. Up to 24 conditions per place. [2023-08-27 11:36:14,166 INFO L140 encePairwiseOnDemand]: 225/230 looper letters, 9 selfloop transitions, 6 changer transitions 1/19 dead transitions. [2023-08-27 11:36:14,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 113 flow [2023-08-27 11:36:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-27 11:36:14,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826086956521739 [2023-08-27 11:36:14,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-27 11:36:14,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-27 11:36:14,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:14,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-27 11:36:14,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,170 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 76 flow. Second operand 3 states and 264 transitions. [2023-08-27 11:36:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 113 flow [2023-08-27 11:36:14,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:36:14,172 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 73 flow [2023-08-27 11:36:14,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-27 11:36:14,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-08-27 11:36:14,175 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 73 flow [2023-08-27 11:36:14,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:14,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:14,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:36:14,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:14,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1123855007, now seen corresponding path program 1 times [2023-08-27 11:36:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489705683] [2023-08-27 11:36:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:14,380 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 11:36:14,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:14,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489705683] [2023-08-27 11:36:14,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489705683] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:14,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037440485] [2023-08-27 11:36:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:14,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:14,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:14,410 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 11:36:14,411 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 11:36:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:14,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:36:14,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:14,501 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:14,502 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 11:36:14,555 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 11:36:14,580 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 11:36:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:36:14,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037440485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:14,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:14,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-27 11:36:14,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098257987] [2023-08-27 11:36:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:36:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:36:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:36:14,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 230 [2023-08-27 11:36:14,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:14,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 230 [2023-08-27 11:36:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:14,607 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2023-08-27 11:36:14,607 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 11:36:14,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 28 events. 6/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 5 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 64. Up to 23 conditions per place. [2023-08-27 11:36:14,608 INFO L140 encePairwiseOnDemand]: 228/230 looper letters, 12 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-27 11:36:14,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 16 transitions, 94 flow [2023-08-27 11:36:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-27 11:36:14,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35942028985507246 [2023-08-27 11:36:14,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-27 11:36:14,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-27 11:36:14,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:14,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-27 11:36:14,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,611 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 73 flow. Second operand 3 states and 248 transitions. [2023-08-27 11:36:14,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 16 transitions, 94 flow [2023-08-27 11:36:14,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 89 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:14,613 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 65 flow [2023-08-27 11:36:14,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-27 11:36:14,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-08-27 11:36:14,614 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 65 flow [2023-08-27 11:36:14,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:14,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:14,615 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:14,631 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 11:36:14,819 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 11:36:14,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 11:36:14,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:14,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1123749906, now seen corresponding path program 1 times [2023-08-27 11:36:14,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:14,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243650095] [2023-08-27 11:36:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:14,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:14,978 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 11:36:14,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243650095] [2023-08-27 11:36:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243650095] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478073791] [2023-08-27 11:36:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:14,993 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 11:36:15,046 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 11:36:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:15,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:36:15,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:15,119 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:15,119 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 11:36:15,149 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 11:36:15,252 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 11:36:15,302 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 11:36:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:36:15,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478073791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:15,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:15,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:36:15,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674212833] [2023-08-27 11:36:15,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:15,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:15,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:15,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:15,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:15,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 230 [2023-08-27 11:36:15,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 65 flow. Second operand has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:15,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 230 [2023-08-27 11:36:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:15,350 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-08-27 11:36:15,350 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 11:36:15,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 27 events. 6/27 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 71. Up to 10 conditions per place. [2023-08-27 11:36:15,350 INFO L140 encePairwiseOnDemand]: 226/230 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-27 11:36:15,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 95 flow [2023-08-27 11:36:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:36:15,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:36:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 378 transitions. [2023-08-27 11:36:15,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32869565217391306 [2023-08-27 11:36:15,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 378 transitions. [2023-08-27 11:36:15,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 378 transitions. [2023-08-27 11:36:15,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:15,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 378 transitions. [2023-08-27 11:36:15,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 230.0) internal successors, (1380), 6 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,354 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 65 flow. Second operand 5 states and 378 transitions. [2023-08-27 11:36:15,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 95 flow [2023-08-27 11:36:15,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 17 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:36:15,355 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-27 11:36:15,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-27 11:36:15,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-08-27 11:36:15,355 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-27 11:36:15,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:15,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-27 11:36:15,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-27 11:36:15,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-27 11:36:15,375 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 11:36:15,558 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 11:36:15,559 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:15,560 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:36:15,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,572 INFO L124 PetriNetUnfolderBase]: 16/153 cut-off events. [2023-08-27 11:36:15,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:15,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 153 events. 16/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-08-27 11:36:15,572 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:36:15,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 117 transitions, 239 flow [2023-08-27 11:36:15,595 INFO L124 PetriNetUnfolderBase]: 16/153 cut-off events. [2023-08-27 11:36:15,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:15,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 153 events. 16/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2023-08-27 11:36:15,597 INFO L119 LiptonReduction]: Number of co-enabled transitions 3680 [2023-08-27 11:36:17,889 INFO L134 LiptonReduction]: Checked pairs total: 6821 [2023-08-27 11:36:17,889 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-27 11:36:17,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:36:17,891 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:36:17,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:36:17,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:36:17,893 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-08-27 11:36:17,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:17,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:17,893 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:36:17,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:36:17,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash -188036581, now seen corresponding path program 1 times [2023-08-27 11:36:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660534213] [2023-08-27 11:36:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:17,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:36:17,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:36:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:36:17,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:36:17,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:36:17,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:36:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:36:17,913 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:36:17,914 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:36:17,914 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:36:17,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:36:17,924 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:36:17,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,938 INFO L124 PetriNetUnfolderBase]: 27/239 cut-off events. [2023-08-27 11:36:17,938 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:36:17,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 239 events. 27/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 711 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2023-08-27 11:36:17,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:36:17,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:17,952 INFO L124 PetriNetUnfolderBase]: 27/239 cut-off events. [2023-08-27 11:36:17,953 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:36:17,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 239 events. 27/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 711 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2023-08-27 11:36:17,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 10640 [2023-08-27 11:36:20,271 INFO L134 LiptonReduction]: Checked pairs total: 22649 [2023-08-27 11:36:20,271 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-27 11:36:20,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:36:20,273 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:36:20,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-27 11:36:20,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:36:20,274 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-27 11:36:20,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:20,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:20,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:36:20,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:20,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:20,274 INFO L85 PathProgramCache]: Analyzing trace with hash 28300691, now seen corresponding path program 1 times [2023-08-27 11:36:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173604965] [2023-08-27 11:36:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:20,296 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 11:36:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173604965] [2023-08-27 11:36:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173604965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:20,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:20,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909969505] [2023-08-27 11:36:20,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:20,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:20,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:36:20,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:20,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:36:20,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:20,618 INFO L124 PetriNetUnfolderBase]: 3896/6250 cut-off events. [2023-08-27 11:36:20,618 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-27 11:36:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12465 conditions, 6250 events. 3896/6250 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40740 event pairs, 3712 based on Foata normal form. 665/4830 useless extension candidates. Maximal degree in co-relation 8153. Up to 6146 conditions per place. [2023-08-27 11:36:20,641 INFO L140 encePairwiseOnDemand]: 284/304 looper letters, 51 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-27 11:36:20,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 236 flow [2023-08-27 11:36:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-27 11:36:20,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120614035087719 [2023-08-27 11:36:20,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-27 11:36:20,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-27 11:36:20,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:20,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-27 11:36:20,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,645 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 132 flow. Second operand 3 states and 467 transitions. [2023-08-27 11:36:20,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 236 flow [2023-08-27 11:36:20,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 234 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 11:36:20,647 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 116 flow [2023-08-27 11:36:20,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-27 11:36:20,648 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-27 11:36:20,648 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 116 flow [2023-08-27 11:36:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:20,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:20,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 11:36:20,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:20,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash 853898431, now seen corresponding path program 1 times [2023-08-27 11:36:20,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:20,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991295984] [2023-08-27 11:36:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:20,690 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 11:36:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991295984] [2023-08-27 11:36:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991295984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:20,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857192782] [2023-08-27 11:36:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:20,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:20,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:20,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 304 [2023-08-27 11:36:20,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:20,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:20,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 304 [2023-08-27 11:36:20,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:21,074 INFO L124 PetriNetUnfolderBase]: 3500/5630 cut-off events. [2023-08-27 11:36:21,074 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2023-08-27 11:36:21,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11964 conditions, 5630 events. 3500/5630 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 35975 event pairs, 1321 based on Foata normal form. 0/4071 useless extension candidates. Maximal degree in co-relation 11881. Up to 5194 conditions per place. [2023-08-27 11:36:21,096 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2023-08-27 11:36:21,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 316 flow [2023-08-27 11:36:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:36:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:36:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-27 11:36:21,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41776315789473684 [2023-08-27 11:36:21,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-27 11:36:21,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-27 11:36:21,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:21,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-27 11:36:21,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,100 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 116 flow. Second operand 4 states and 508 transitions. [2023-08-27 11:36:21,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 316 flow [2023-08-27 11:36:21,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:21,102 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 165 flow [2023-08-27 11:36:21,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-27 11:36:21,103 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-27 11:36:21,103 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 165 flow [2023-08-27 11:36:21,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:21,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:36:21,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:21,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash 504589627, now seen corresponding path program 1 times [2023-08-27 11:36:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:21,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182659325] [2023-08-27 11:36:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:21,140 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 11:36:21,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182659325] [2023-08-27 11:36:21,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182659325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005070051] [2023-08-27 11:36:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:21,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:21,141 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 11:36:21,157 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 11:36:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:21,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:36:21,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:21,219 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 11:36:21,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:21,230 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 11:36:21,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005070051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:21,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:21,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:36:21,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763958952] [2023-08-27 11:36:21,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:21,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:36:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:21,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:36:21,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:36:21,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:36:21,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:21,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:36:21,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:21,395 INFO L124 PetriNetUnfolderBase]: 1158/2093 cut-off events. [2023-08-27 11:36:21,395 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2023-08-27 11:36:21,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 2093 events. 1158/2093 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12968 event pairs, 147 based on Foata normal form. 188/1805 useless extension candidates. Maximal degree in co-relation 3851. Up to 1006 conditions per place. [2023-08-27 11:36:21,407 INFO L140 encePairwiseOnDemand]: 299/304 looper letters, 99 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-27 11:36:21,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 109 transitions, 526 flow [2023-08-27 11:36:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:36:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:36:21,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 880 transitions. [2023-08-27 11:36:21,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 11:36:21,409 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 880 transitions. [2023-08-27 11:36:21,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 880 transitions. [2023-08-27 11:36:21,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:21,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 880 transitions. [2023-08-27 11:36:21,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,414 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,414 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 165 flow. Second operand 6 states and 880 transitions. [2023-08-27 11:36:21,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 109 transitions, 526 flow [2023-08-27 11:36:21,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 109 transitions, 502 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:21,418 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 129 flow [2023-08-27 11:36:21,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-27 11:36:21,418 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-27 11:36:21,418 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 129 flow [2023-08-27 11:36:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:21,419 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:36:21,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 11:36:21,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:21,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:21,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1538052652, now seen corresponding path program 1 times [2023-08-27 11:36:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640115203] [2023-08-27 11:36:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:21,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:21,641 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 11:36:21,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:21,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640115203] [2023-08-27 11:36:21,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640115203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:21,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:21,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994325880] [2023-08-27 11:36:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:21,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:21,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 304 [2023-08-27 11:36:21,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:21,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 304 [2023-08-27 11:36:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:21,728 INFO L124 PetriNetUnfolderBase]: 832/1432 cut-off events. [2023-08-27 11:36:21,728 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2023-08-27 11:36:21,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3456 conditions, 1432 events. 832/1432 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7814 event pairs, 805 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 2394. Up to 1398 conditions per place. [2023-08-27 11:36:21,734 INFO L140 encePairwiseOnDemand]: 302/304 looper letters, 33 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-27 11:36:21,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 191 flow [2023-08-27 11:36:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-27 11:36:21,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2023-08-27 11:36:21,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-27 11:36:21,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-27 11:36:21,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:21,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-27 11:36:21,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 304.0) internal successors, (1216), 4 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,738 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 129 flow. Second operand 3 states and 422 transitions. [2023-08-27 11:36:21,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 191 flow [2023-08-27 11:36:21,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 184 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:36:21,740 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 118 flow [2023-08-27 11:36:21,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-27 11:36:21,741 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2023-08-27 11:36:21,741 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 118 flow [2023-08-27 11:36:21,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:21,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:21,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:36:21,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:21,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1491419649, now seen corresponding path program 1 times [2023-08-27 11:36:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418468128] [2023-08-27 11:36:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:21,800 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 11:36:21,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:21,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418468128] [2023-08-27 11:36:21,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418468128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:21,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:21,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:36:21,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600233335] [2023-08-27 11:36:21,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:21,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:21,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:21,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:21,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 304 [2023-08-27 11:36:21,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:21,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 304 [2023-08-27 11:36:21,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:21,987 INFO L124 PetriNetUnfolderBase]: 1117/2114 cut-off events. [2023-08-27 11:36:21,987 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2023-08-27 11:36:21,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 2114 events. 1117/2114 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13715 event pairs, 273 based on Foata normal form. 0/1862 useless extension candidates. Maximal degree in co-relation 4773. Up to 810 conditions per place. [2023-08-27 11:36:21,992 INFO L140 encePairwiseOnDemand]: 290/304 looper letters, 76 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2023-08-27 11:36:21,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 504 flow [2023-08-27 11:36:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:36:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:36:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-08-27 11:36:21,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138157894736842 [2023-08-27 11:36:21,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-08-27 11:36:21,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-08-27 11:36:21,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:21,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-08-27 11:36:21,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,997 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,997 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 118 flow. Second operand 5 states and 629 transitions. [2023-08-27 11:36:21,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 504 flow [2023-08-27 11:36:21,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:21,998 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 304 flow [2023-08-27 11:36:21,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-27 11:36:21,999 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-27 11:36:21,999 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 304 flow [2023-08-27 11:36:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:21,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:21,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:21,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:36:21,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:21,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1491419687, now seen corresponding path program 1 times [2023-08-27 11:36:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:21,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127517529] [2023-08-27 11:36:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:22,068 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 11:36:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127517529] [2023-08-27 11:36:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127517529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:36:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446028039] [2023-08-27 11:36:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:36:22,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 304 [2023-08-27 11:36:22,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:22,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 304 [2023-08-27 11:36:22,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:22,295 INFO L124 PetriNetUnfolderBase]: 1264/2467 cut-off events. [2023-08-27 11:36:22,295 INFO L125 PetriNetUnfolderBase]: For 2367/2369 co-relation queries the response was YES. [2023-08-27 11:36:22,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 2467 events. 1264/2467 cut-off events. For 2367/2369 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16707 event pairs, 321 based on Foata normal form. 74/2539 useless extension candidates. Maximal degree in co-relation 7349. Up to 1540 conditions per place. [2023-08-27 11:36:22,304 INFO L140 encePairwiseOnDemand]: 288/304 looper letters, 110 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2023-08-27 11:36:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 149 transitions, 977 flow [2023-08-27 11:36:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:36:22,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:36:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 835 transitions. [2023-08-27 11:36:22,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923872180451128 [2023-08-27 11:36:22,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 835 transitions. [2023-08-27 11:36:22,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 835 transitions. [2023-08-27 11:36:22,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:22,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 835 transitions. [2023-08-27 11:36:22,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,310 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 304 flow. Second operand 7 states and 835 transitions. [2023-08-27 11:36:22,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 149 transitions, 977 flow [2023-08-27 11:36:22,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 149 transitions, 977 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:36:22,315 INFO L231 Difference]: Finished difference. Result has 68 places, 86 transitions, 657 flow [2023-08-27 11:36:22,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=68, PETRI_TRANSITIONS=86} [2023-08-27 11:36:22,316 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2023-08-27 11:36:22,316 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 86 transitions, 657 flow [2023-08-27 11:36:22,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:22,317 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:22,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:36:22,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:22,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -124189243, now seen corresponding path program 1 times [2023-08-27 11:36:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:22,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314538300] [2023-08-27 11:36:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:22,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:22,455 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 11:36:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314538300] [2023-08-27 11:36:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314538300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137244009] [2023-08-27 11:36:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:22,456 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 11:36:22,458 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 11:36:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:22,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:36:22,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:22,525 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:22,525 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 11:36:22,563 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 11:36:22,580 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 11:36:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:36:22,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137244009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:22,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:36:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499382107] [2023-08-27 11:36:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:22,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:22,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:22,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:22,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 304 [2023-08-27 11:36:22,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 86 transitions, 657 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:22,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 304 [2023-08-27 11:36:22,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:22,794 INFO L124 PetriNetUnfolderBase]: 1220/2337 cut-off events. [2023-08-27 11:36:22,795 INFO L125 PetriNetUnfolderBase]: For 5683/5706 co-relation queries the response was YES. [2023-08-27 11:36:22,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 2337 events. 1220/2337 cut-off events. For 5683/5706 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15371 event pairs, 525 based on Foata normal form. 41/2371 useless extension candidates. Maximal degree in co-relation 8476. Up to 1355 conditions per place. [2023-08-27 11:36:22,804 INFO L140 encePairwiseOnDemand]: 294/304 looper letters, 79 selfloop transitions, 26 changer transitions 4/115 dead transitions. [2023-08-27 11:36:22,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 1008 flow [2023-08-27 11:36:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:36:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:36:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 686 transitions. [2023-08-27 11:36:22,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37609649122807015 [2023-08-27 11:36:22,806 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 686 transitions. [2023-08-27 11:36:22,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 686 transitions. [2023-08-27 11:36:22,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:22,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 686 transitions. [2023-08-27 11:36:22,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.33333333333333) internal successors, (686), 6 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,810 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 304.0) internal successors, (2128), 7 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,810 INFO L175 Difference]: Start difference. First operand has 68 places, 86 transitions, 657 flow. Second operand 6 states and 686 transitions. [2023-08-27 11:36:22,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 1008 flow [2023-08-27 11:36:22,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 986 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:22,818 INFO L231 Difference]: Finished difference. Result has 74 places, 86 transitions, 736 flow [2023-08-27 11:36:22,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=736, PETRI_PLACES=74, PETRI_TRANSITIONS=86} [2023-08-27 11:36:22,819 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2023-08-27 11:36:22,819 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 86 transitions, 736 flow [2023-08-27 11:36:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:22,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:22,826 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 11:36:23,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 11:36:23,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:23,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -124189281, now seen corresponding path program 1 times [2023-08-27 11:36:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:23,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463520669] [2023-08-27 11:36:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:23,127 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 11:36:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:23,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463520669] [2023-08-27 11:36:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463520669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:23,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303017041] [2023-08-27 11:36:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:23,128 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 11:36:23,166 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 11:36:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:23,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:36:23,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:23,209 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:23,209 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 11:36:23,223 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 11:36:23,274 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 11:36:23,292 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 11:36:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:36:23,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:23,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303017041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:23,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:23,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:36:23,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848228949] [2023-08-27 11:36:23,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:23,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:23,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:36:23,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 304 [2023-08-27 11:36:23,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 86 transitions, 736 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:23,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:23,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 304 [2023-08-27 11:36:23,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:23,517 INFO L124 PetriNetUnfolderBase]: 1168/2292 cut-off events. [2023-08-27 11:36:23,517 INFO L125 PetriNetUnfolderBase]: For 6645/6647 co-relation queries the response was YES. [2023-08-27 11:36:23,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 2292 events. 1168/2292 cut-off events. For 6645/6647 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15009 event pairs, 426 based on Foata normal form. 23/2313 useless extension candidates. Maximal degree in co-relation 8635. Up to 1723 conditions per place. [2023-08-27 11:36:23,526 INFO L140 encePairwiseOnDemand]: 297/304 looper letters, 99 selfloop transitions, 14 changer transitions 0/119 dead transitions. [2023-08-27 11:36:23,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 1157 flow [2023-08-27 11:36:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:36:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:36:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 575 transitions. [2023-08-27 11:36:23,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782894736842105 [2023-08-27 11:36:23,528 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 575 transitions. [2023-08-27 11:36:23,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 575 transitions. [2023-08-27 11:36:23,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:23,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 575 transitions. [2023-08-27 11:36:23,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:23,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:23,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:23,531 INFO L175 Difference]: Start difference. First operand has 74 places, 86 transitions, 736 flow. Second operand 5 states and 575 transitions. [2023-08-27 11:36:23,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 1157 flow [2023-08-27 11:36:23,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 1148 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:23,544 INFO L231 Difference]: Finished difference. Result has 78 places, 88 transitions, 794 flow [2023-08-27 11:36:23,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=794, PETRI_PLACES=78, PETRI_TRANSITIONS=88} [2023-08-27 11:36:23,544 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-27 11:36:23,544 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 88 transitions, 794 flow [2023-08-27 11:36:23,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:23,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:23,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:23,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 11:36:23,748 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 11:36:23,749 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:23,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 590170751, now seen corresponding path program 1 times [2023-08-27 11:36:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37238760] [2023-08-27 11:36:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:23,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:23,855 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 11:36:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37238760] [2023-08-27 11:36:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37238760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642792990] [2023-08-27 11:36:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:23,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:23,856 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 11:36:23,859 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 11:36:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:23,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:36:23,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:23,929 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:23,930 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 11:36:23,943 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 11:36:23,965 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 11:36:24,003 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 11:36:24,020 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 11:36:24,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:24,053 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_302) c_~p~0.base) c_~p~0.offset)))) is different from false [2023-08-27 11:36:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-27 11:36:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642792990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:24,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:36:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650555670] [2023-08-27 11:36:24,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:24,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:36:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:36:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-27 11:36:24,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 304 [2023-08-27 11:36:24,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 88 transitions, 794 flow. Second operand has 14 states, 14 states have (on average 105.78571428571429) internal successors, (1481), 14 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:24,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 304 [2023-08-27 11:36:24,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:24,546 INFO L124 PetriNetUnfolderBase]: 1449/2758 cut-off events. [2023-08-27 11:36:24,546 INFO L125 PetriNetUnfolderBase]: For 9703/9705 co-relation queries the response was YES. [2023-08-27 11:36:24,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10610 conditions, 2758 events. 1449/2758 cut-off events. For 9703/9705 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18333 event pairs, 278 based on Foata normal form. 80/2836 useless extension candidates. Maximal degree in co-relation 10580. Up to 1498 conditions per place. [2023-08-27 11:36:24,556 INFO L140 encePairwiseOnDemand]: 288/304 looper letters, 149 selfloop transitions, 95 changer transitions 8/258 dead transitions. [2023-08-27 11:36:24,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 258 transitions, 2590 flow [2023-08-27 11:36:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-27 11:36:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-27 11:36:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1588 transitions. [2023-08-27 11:36:24,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3731203007518797 [2023-08-27 11:36:24,559 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1588 transitions. [2023-08-27 11:36:24,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1588 transitions. [2023-08-27 11:36:24,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:24,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1588 transitions. [2023-08-27 11:36:24,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 113.42857142857143) internal successors, (1588), 14 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 304.0) internal successors, (4560), 15 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,566 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 304.0) internal successors, (4560), 15 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,566 INFO L175 Difference]: Start difference. First operand has 78 places, 88 transitions, 794 flow. Second operand 14 states and 1588 transitions. [2023-08-27 11:36:24,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 258 transitions, 2590 flow [2023-08-27 11:36:24,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 258 transitions, 2520 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-27 11:36:24,583 INFO L231 Difference]: Finished difference. Result has 98 places, 166 transitions, 1913 flow [2023-08-27 11:36:24,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1913, PETRI_PLACES=98, PETRI_TRANSITIONS=166} [2023-08-27 11:36:24,583 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2023-08-27 11:36:24,583 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 166 transitions, 1913 flow [2023-08-27 11:36:24,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 105.78571428571429) internal successors, (1481), 14 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:24,584 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:24,590 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 11:36:24,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:24,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:24,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash 594765931, now seen corresponding path program 1 times [2023-08-27 11:36:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:24,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393976154] [2023-08-27 11:36:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:24,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:24,833 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 11:36:24,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393976154] [2023-08-27 11:36:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393976154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:24,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:24,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:36:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980559938] [2023-08-27 11:36:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:24,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:24,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:24,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:24,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:24,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 304 [2023-08-27 11:36:24,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 166 transitions, 1913 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:24,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 304 [2023-08-27 11:36:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:24,899 INFO L124 PetriNetUnfolderBase]: 154/457 cut-off events. [2023-08-27 11:36:24,899 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2023-08-27 11:36:24,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 457 events. 154/457 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2257 event pairs, 54 based on Foata normal form. 82/539 useless extension candidates. Maximal degree in co-relation 2134. Up to 360 conditions per place. [2023-08-27 11:36:24,901 INFO L140 encePairwiseOnDemand]: 299/304 looper letters, 58 selfloop transitions, 5 changer transitions 8/75 dead transitions. [2023-08-27 11:36:24,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 75 transitions, 895 flow [2023-08-27 11:36:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:36:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:36:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2023-08-27 11:36:24,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39144736842105265 [2023-08-27 11:36:24,902 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2023-08-27 11:36:24,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2023-08-27 11:36:24,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:24,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2023-08-27 11:36:24,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,905 INFO L175 Difference]: Start difference. First operand has 98 places, 166 transitions, 1913 flow. Second operand 4 states and 476 transitions. [2023-08-27 11:36:24,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 75 transitions, 895 flow [2023-08-27 11:36:24,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 75 transitions, 767 flow, removed 38 selfloop flow, removed 12 redundant places. [2023-08-27 11:36:24,910 INFO L231 Difference]: Finished difference. Result has 83 places, 62 transitions, 509 flow [2023-08-27 11:36:24,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=509, PETRI_PLACES=83, PETRI_TRANSITIONS=62} [2023-08-27 11:36:24,910 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-27 11:36:24,910 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 62 transitions, 509 flow [2023-08-27 11:36:24,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:24,910 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 11:36:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:36:24,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:24,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash -623533209, now seen corresponding path program 1 times [2023-08-27 11:36:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:24,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150092197] [2023-08-27 11:36:24,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:24,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:24,957 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 11:36:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150092197] [2023-08-27 11:36:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150092197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:36:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643721394] [2023-08-27 11:36:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:24,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 304 [2023-08-27 11:36:24,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 62 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:24,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:24,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 304 [2023-08-27 11:36:24,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:25,030 INFO L124 PetriNetUnfolderBase]: 118/379 cut-off events. [2023-08-27 11:36:25,030 INFO L125 PetriNetUnfolderBase]: For 1353/1355 co-relation queries the response was YES. [2023-08-27 11:36:25,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1618 conditions, 379 events. 118/379 cut-off events. For 1353/1355 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1911 event pairs, 53 based on Foata normal form. 3/380 useless extension candidates. Maximal degree in co-relation 1587. Up to 227 conditions per place. [2023-08-27 11:36:25,031 INFO L140 encePairwiseOnDemand]: 294/304 looper letters, 55 selfloop transitions, 17 changer transitions 0/78 dead transitions. [2023-08-27 11:36:25,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 78 transitions, 746 flow [2023-08-27 11:36:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:36:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:36:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2023-08-27 11:36:25,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38355263157894737 [2023-08-27 11:36:25,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2023-08-27 11:36:25,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2023-08-27 11:36:25,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:25,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2023-08-27 11:36:25,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,036 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,036 INFO L175 Difference]: Start difference. First operand has 83 places, 62 transitions, 509 flow. Second operand 5 states and 583 transitions. [2023-08-27 11:36:25,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 78 transitions, 746 flow [2023-08-27 11:36:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 725 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 11:36:25,039 INFO L231 Difference]: Finished difference. Result has 85 places, 64 transitions, 580 flow [2023-08-27 11:36:25,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=580, PETRI_PLACES=85, PETRI_TRANSITIONS=64} [2023-08-27 11:36:25,039 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 35 predicate places. [2023-08-27 11:36:25,039 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 64 transitions, 580 flow [2023-08-27 11:36:25,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:25,040 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 11:36:25,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 11:36:25,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:25,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1628522138, now seen corresponding path program 1 times [2023-08-27 11:36:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801198299] [2023-08-27 11:36:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:25,171 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 11:36:25,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801198299] [2023-08-27 11:36:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801198299] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919209645] [2023-08-27 11:36:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:25,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:25,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:25,172 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 11:36:25,175 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 11:36:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:25,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:25,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:25,251 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:25,251 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 11:36:25,284 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 11:36:25,321 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 11:36:25,343 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 11:36:25,362 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 11:36:25,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:25,405 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_401 Int) (v_ArrVal_403 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_401)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) c_~p~0.base) c_~p~0.offset) 2147483647) (< |c_t_funThread1of2ForFork0_#t~post9| (+ v_ArrVal_401 1)))) is different from false [2023-08-27 11:36:25,411 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_401 Int) (v_ArrVal_403 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (< (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_401)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_403) c_~p~0.base) c_~p~0.offset) 2147483647) (< (select .cse0 c_~p~0.offset) (+ v_ArrVal_401 1))))) is different from false [2023-08-27 11:36:25,424 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:36:25,424 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 11:36:25,427 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 11:36:25,453 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 11:36:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919209645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:25,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:25,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 11:36:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740905406] [2023-08-27 11:36:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:25,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:36:25,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:36:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=238, Unknown=3, NotChecked=66, Total=380 [2023-08-27 11:36:25,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 304 [2023-08-27 11:36:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 64 transitions, 580 flow. Second operand has 20 states, 20 states have (on average 99.55) internal successors, (1991), 20 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:25,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 304 [2023-08-27 11:36:25,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:25,805 INFO L124 PetriNetUnfolderBase]: 115/367 cut-off events. [2023-08-27 11:36:25,805 INFO L125 PetriNetUnfolderBase]: For 1483/1485 co-relation queries the response was YES. [2023-08-27 11:36:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 367 events. 115/367 cut-off events. For 1483/1485 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1776 event pairs, 30 based on Foata normal form. 6/371 useless extension candidates. Maximal degree in co-relation 1586. Up to 99 conditions per place. [2023-08-27 11:36:25,806 INFO L140 encePairwiseOnDemand]: 292/304 looper letters, 65 selfloop transitions, 26 changer transitions 2/99 dead transitions. [2023-08-27 11:36:25,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 976 flow [2023-08-27 11:36:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:36:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:36:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1521 transitions. [2023-08-27 11:36:25,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3335526315789474 [2023-08-27 11:36:25,809 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1521 transitions. [2023-08-27 11:36:25,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1521 transitions. [2023-08-27 11:36:25,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:25,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1521 transitions. [2023-08-27 11:36:25,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 101.4) internal successors, (1521), 15 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 304.0) internal successors, (4864), 16 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,816 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 304.0) internal successors, (4864), 16 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,816 INFO L175 Difference]: Start difference. First operand has 85 places, 64 transitions, 580 flow. Second operand 15 states and 1521 transitions. [2023-08-27 11:36:25,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 976 flow [2023-08-27 11:36:25,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 933 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 11:36:25,820 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 543 flow [2023-08-27 11:36:25,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=543, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-08-27 11:36:25,820 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2023-08-27 11:36:25,821 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 543 flow [2023-08-27 11:36:25,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.55) internal successors, (1991), 20 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:25,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:25,821 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 11:36:25,831 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 11:36:26,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:26,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:26,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1628522195, now seen corresponding path program 2 times [2023-08-27 11:36:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886582134] [2023-08-27 11:36:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:26,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:26,186 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 11:36:26,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886582134] [2023-08-27 11:36:26,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886582134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:26,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276647485] [2023-08-27 11:36:26,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:36:26,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:26,187 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 11:36:26,221 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 11:36:26,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:36:26,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:36:26,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:26,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:26,311 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:26,311 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 11:36:26,353 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 11:36:26,406 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 11:36:26,430 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 11:36:26,450 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 11:36:26,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:26,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) c_~p~0.base) c_~p~0.offset)))) is different from false [2023-08-27 11:36:26,481 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int)) (v_ArrVal_458 Int)) (or (< (+ v_ArrVal_458 1) |c_t_funThread1of2ForFork0_#t~post9|) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_458)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) c_~p~0.base) c_~p~0.offset))))) is different from false [2023-08-27 11:36:26,490 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_460 (Array Int Int)) (v_ArrVal_458 Int)) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (< (+ v_ArrVal_458 1) (select .cse0 c_~p~0.offset)) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_458)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_460) c_~p~0.base) c_~p~0.offset)))))) is different from false [2023-08-27 11:36:26,508 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:36:26,509 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 11:36:26,511 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 33 treesize of output 25 [2023-08-27 11:36:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:36:26,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276647485] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:26,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:26,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-08-27 11:36:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474919515] [2023-08-27 11:36:26,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:26,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 11:36:26,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:26,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 11:36:26,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=208, Unknown=3, NotChecked=96, Total=380 [2023-08-27 11:36:26,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 304 [2023-08-27 11:36:26,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 543 flow. Second operand has 20 states, 20 states have (on average 99.55) internal successors, (1991), 20 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:26,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:26,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 304 [2023-08-27 11:36:26,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:30,952 INFO L124 PetriNetUnfolderBase]: 114/358 cut-off events. [2023-08-27 11:36:30,952 INFO L125 PetriNetUnfolderBase]: For 1407/1409 co-relation queries the response was YES. [2023-08-27 11:36:30,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 358 events. 114/358 cut-off events. For 1407/1409 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1708 event pairs, 29 based on Foata normal form. 3/359 useless extension candidates. Maximal degree in co-relation 1557. Up to 88 conditions per place. [2023-08-27 11:36:30,954 INFO L140 encePairwiseOnDemand]: 290/304 looper letters, 64 selfloop transitions, 28 changer transitions 0/98 dead transitions. [2023-08-27 11:36:30,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 982 flow [2023-08-27 11:36:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 11:36:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 11:36:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1520 transitions. [2023-08-27 11:36:30,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-08-27 11:36:30,956 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1520 transitions. [2023-08-27 11:36:30,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1520 transitions. [2023-08-27 11:36:30,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:30,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1520 transitions. [2023-08-27 11:36:30,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 101.33333333333333) internal successors, (1520), 15 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 304.0) internal successors, (4864), 16 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,962 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 304.0) internal successors, (4864), 16 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,962 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 543 flow. Second operand 15 states and 1520 transitions. [2023-08-27 11:36:30,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 982 flow [2023-08-27 11:36:30,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 98 transitions, 905 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-27 11:36:30,967 INFO L231 Difference]: Finished difference. Result has 92 places, 62 transitions, 543 flow [2023-08-27 11:36:30,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=543, PETRI_PLACES=92, PETRI_TRANSITIONS=62} [2023-08-27 11:36:30,967 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 42 predicate places. [2023-08-27 11:36:30,967 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 62 transitions, 543 flow [2023-08-27 11:36:30,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.55) internal successors, (1991), 20 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:30,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:30,968 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 11:36:30,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 11:36:31,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:31,172 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:31,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:31,172 INFO L85 PathProgramCache]: Analyzing trace with hash 16154195, now seen corresponding path program 1 times [2023-08-27 11:36:31,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:31,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033405836] [2023-08-27 11:36:31,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:31,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:31,259 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 11:36:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033405836] [2023-08-27 11:36:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033405836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:36:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093619961] [2023-08-27 11:36:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:36:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:36:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:36:31,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 304 [2023-08-27 11:36:31,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 62 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:31,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 304 [2023-08-27 11:36:31,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:31,350 INFO L124 PetriNetUnfolderBase]: 114/365 cut-off events. [2023-08-27 11:36:31,350 INFO L125 PetriNetUnfolderBase]: For 1422/1424 co-relation queries the response was YES. [2023-08-27 11:36:31,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 365 events. 114/365 cut-off events. For 1422/1424 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1778 event pairs, 36 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 1579. Up to 174 conditions per place. [2023-08-27 11:36:31,351 INFO L140 encePairwiseOnDemand]: 291/304 looper letters, 57 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2023-08-27 11:36:31,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 904 flow [2023-08-27 11:36:31,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:36:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:36:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 806 transitions. [2023-08-27 11:36:31,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37875939849624063 [2023-08-27 11:36:31,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 806 transitions. [2023-08-27 11:36:31,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 806 transitions. [2023-08-27 11:36:31,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:31,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 806 transitions. [2023-08-27 11:36:31,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,358 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,358 INFO L175 Difference]: Start difference. First operand has 92 places, 62 transitions, 543 flow. Second operand 7 states and 806 transitions. [2023-08-27 11:36:31,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 904 flow [2023-08-27 11:36:31,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 848 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-08-27 11:36:31,362 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 717 flow [2023-08-27 11:36:31,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=717, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2023-08-27 11:36:31,363 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-27 11:36:31,363 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 717 flow [2023-08-27 11:36:31,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:31,363 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 11:36:31,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 11:36:31,363 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:31,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash 16154179, now seen corresponding path program 1 times [2023-08-27 11:36:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35571023] [2023-08-27 11:36:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:31,416 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 11:36:31,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35571023] [2023-08-27 11:36:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35571023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:31,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:36:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85540149] [2023-08-27 11:36:31,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:31,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:31,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:31,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:31,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 304 [2023-08-27 11:36:31,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 717 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:31,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 304 [2023-08-27 11:36:31,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:31,496 INFO L124 PetriNetUnfolderBase]: 113/366 cut-off events. [2023-08-27 11:36:31,496 INFO L125 PetriNetUnfolderBase]: For 1868/1872 co-relation queries the response was YES. [2023-08-27 11:36:31,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 366 events. 113/366 cut-off events. For 1868/1872 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1814 event pairs, 69 based on Foata normal form. 4/368 useless extension candidates. Maximal degree in co-relation 1657. Up to 251 conditions per place. [2023-08-27 11:36:31,497 INFO L140 encePairwiseOnDemand]: 294/304 looper letters, 58 selfloop transitions, 19 changer transitions 0/83 dead transitions. [2023-08-27 11:36:31,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 936 flow [2023-08-27 11:36:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:36:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:36:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-08-27 11:36:31,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37894736842105264 [2023-08-27 11:36:31,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-08-27 11:36:31,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-08-27 11:36:31,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:31,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-08-27 11:36:31,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 304.0) internal successors, (1824), 6 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,501 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 717 flow. Second operand 5 states and 576 transitions. [2023-08-27 11:36:31,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 83 transitions, 936 flow [2023-08-27 11:36:31,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 880 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-27 11:36:31,505 INFO L231 Difference]: Finished difference. Result has 96 places, 76 transitions, 758 flow [2023-08-27 11:36:31,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=758, PETRI_PLACES=96, PETRI_TRANSITIONS=76} [2023-08-27 11:36:31,506 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-27 11:36:31,506 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 76 transitions, 758 flow [2023-08-27 11:36:31,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:31,506 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 11:36:31,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:36:31,506 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:31,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1664653495, now seen corresponding path program 2 times [2023-08-27 11:36:31,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972308375] [2023-08-27 11:36:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:31,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:31,652 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 11:36:31,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972308375] [2023-08-27 11:36:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972308375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101378036] [2023-08-27 11:36:31,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:36:31,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:31,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:31,671 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 11:36:31,712 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 11:36:31,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:36:31,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:36:31,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:31,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:31,778 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:31,778 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 11:36:31,814 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 11:36:31,836 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 11:36:31,865 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 11:36:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:36:31,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:31,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101378036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:31,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:31,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-27 11:36:31,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742929045] [2023-08-27 11:36:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:31,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:36:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:36:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-27 11:36:31,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 304 [2023-08-27 11:36:31,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 76 transitions, 758 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:31,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:31,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 304 [2023-08-27 11:36:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:32,006 INFO L124 PetriNetUnfolderBase]: 112/364 cut-off events. [2023-08-27 11:36:32,006 INFO L125 PetriNetUnfolderBase]: For 1869/1885 co-relation queries the response was YES. [2023-08-27 11:36:32,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 364 events. 112/364 cut-off events. For 1869/1885 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1782 event pairs, 43 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1656. Up to 125 conditions per place. [2023-08-27 11:36:32,008 INFO L140 encePairwiseOnDemand]: 295/304 looper letters, 61 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2023-08-27 11:36:32,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 961 flow [2023-08-27 11:36:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:36:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:36:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2023-08-27 11:36:32,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580827067669173 [2023-08-27 11:36:32,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2023-08-27 11:36:32,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2023-08-27 11:36:32,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:32,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2023-08-27 11:36:32,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,011 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 304.0) internal successors, (2432), 8 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,011 INFO L175 Difference]: Start difference. First operand has 96 places, 76 transitions, 758 flow. Second operand 7 states and 762 transitions. [2023-08-27 11:36:32,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 961 flow [2023-08-27 11:36:32,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 86 transitions, 895 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 11:36:32,016 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 694 flow [2023-08-27 11:36:32,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=694, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2023-08-27 11:36:32,017 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-27 11:36:32,017 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 694 flow [2023-08-27 11:36:32,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:32,017 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 11:36:32,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 11:36:32,221 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,SelfDestructingSolverStorable23 [2023-08-27 11:36:32,222 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:32,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1393288787, now seen corresponding path program 2 times [2023-08-27 11:36:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:32,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311758516] [2023-08-27 11:36:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:32,370 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 11:36:32,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311758516] [2023-08-27 11:36:32,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311758516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:32,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057152088] [2023-08-27 11:36:32,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:36:32,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:32,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:32,373 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 11:36:32,402 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 11:36:32,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:36:32,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:36:32,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:32,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:32,484 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:32,484 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 11:36:32,553 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 11:36:32,612 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 11:36:32,639 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 11:36:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:36:32,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057152088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-27 11:36:32,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793145358] [2023-08-27 11:36:32,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:32,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:36:32,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:36:32,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:36:32,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 304 [2023-08-27 11:36:32,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 74 transitions, 694 flow. Second operand has 8 states, 8 states have (on average 99.25) internal successors, (794), 8 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:32,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 304 [2023-08-27 11:36:32,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:32,778 INFO L124 PetriNetUnfolderBase]: 112/361 cut-off events. [2023-08-27 11:36:32,778 INFO L125 PetriNetUnfolderBase]: For 1749/1762 co-relation queries the response was YES. [2023-08-27 11:36:32,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 361 events. 112/361 cut-off events. For 1749/1762 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1769 event pairs, 35 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1606. Up to 135 conditions per place. [2023-08-27 11:36:32,780 INFO L140 encePairwiseOnDemand]: 293/304 looper letters, 59 selfloop transitions, 23 changer transitions 0/88 dead transitions. [2023-08-27 11:36:32,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 959 flow [2023-08-27 11:36:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:36:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:36:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 820 transitions. [2023-08-27 11:36:32,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3371710526315789 [2023-08-27 11:36:32,781 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 820 transitions. [2023-08-27 11:36:32,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 820 transitions. [2023-08-27 11:36:32,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:32,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 820 transitions. [2023-08-27 11:36:32,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,784 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,784 INFO L175 Difference]: Start difference. First operand has 93 places, 74 transitions, 694 flow. Second operand 8 states and 820 transitions. [2023-08-27 11:36:32,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 959 flow [2023-08-27 11:36:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 905 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-27 11:36:32,788 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 678 flow [2023-08-27 11:36:32,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=678, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2023-08-27 11:36:32,789 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-27 11:36:32,789 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 678 flow [2023-08-27 11:36:32,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.25) internal successors, (794), 8 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:32,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:32,789 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 11:36:32,803 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 11:36:32,994 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 11:36:32,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:32,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash 496078133, now seen corresponding path program 1 times [2023-08-27 11:36:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:32,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893456122] [2023-08-27 11:36:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:32,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:33,089 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 11:36:33,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893456122] [2023-08-27 11:36:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893456122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:33,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:33,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:36:33,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962879043] [2023-08-27 11:36:33,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:33,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:33,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:33,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:36:33,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 304 [2023-08-27 11:36:33,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:33,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 304 [2023-08-27 11:36:33,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:33,207 INFO L124 PetriNetUnfolderBase]: 115/379 cut-off events. [2023-08-27 11:36:33,207 INFO L125 PetriNetUnfolderBase]: For 1563/1573 co-relation queries the response was YES. [2023-08-27 11:36:33,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1711 conditions, 379 events. 115/379 cut-off events. For 1563/1573 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1909 event pairs, 50 based on Foata normal form. 3/380 useless extension candidates. Maximal degree in co-relation 1677. Up to 224 conditions per place. [2023-08-27 11:36:33,209 INFO L140 encePairwiseOnDemand]: 294/304 looper letters, 68 selfloop transitions, 19 changer transitions 4/97 dead transitions. [2023-08-27 11:36:33,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 1016 flow [2023-08-27 11:36:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:36:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:36:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 962 transitions. [2023-08-27 11:36:33,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3516081871345029 [2023-08-27 11:36:33,210 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 962 transitions. [2023-08-27 11:36:33,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 962 transitions. [2023-08-27 11:36:33,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:33,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 962 transitions. [2023-08-27 11:36:33,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.88888888888889) internal successors, (962), 9 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 304.0) internal successors, (3040), 10 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,213 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 678 flow. Second operand 9 states and 962 transitions. [2023-08-27 11:36:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 1016 flow [2023-08-27 11:36:33,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 959 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-27 11:36:33,218 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 719 flow [2023-08-27 11:36:33,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=719, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2023-08-27 11:36:33,218 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-27 11:36:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 719 flow [2023-08-27 11:36:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:33,219 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 11:36:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 11:36:33,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:33,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1952129683, now seen corresponding path program 1 times [2023-08-27 11:36:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:33,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728579190] [2023-08-27 11:36:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:33,293 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 11:36:33,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728579190] [2023-08-27 11:36:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728579190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:33,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:36:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748007171] [2023-08-27 11:36:33,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:36:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:36:33,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:36:33,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 304 [2023-08-27 11:36:33,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 719 flow. Second operand has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:33,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 304 [2023-08-27 11:36:33,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:33,399 INFO L124 PetriNetUnfolderBase]: 111/374 cut-off events. [2023-08-27 11:36:33,399 INFO L125 PetriNetUnfolderBase]: For 1659/1663 co-relation queries the response was YES. [2023-08-27 11:36:33,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 374 events. 111/374 cut-off events. For 1659/1663 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1909 event pairs, 68 based on Foata normal form. 3/375 useless extension candidates. Maximal degree in co-relation 1652. Up to 245 conditions per place. [2023-08-27 11:36:33,400 INFO L140 encePairwiseOnDemand]: 293/304 looper letters, 53 selfloop transitions, 20 changer transitions 8/87 dead transitions. [2023-08-27 11:36:33,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 87 transitions, 935 flow [2023-08-27 11:36:33,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:36:33,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:36:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1059 transitions. [2023-08-27 11:36:33,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3483552631578947 [2023-08-27 11:36:33,402 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1059 transitions. [2023-08-27 11:36:33,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1059 transitions. [2023-08-27 11:36:33,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:33,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1059 transitions. [2023-08-27 11:36:33,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.9) internal successors, (1059), 10 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 11:36:33,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,405 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 304.0) internal successors, (3344), 11 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,405 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 719 flow. Second operand 10 states and 1059 transitions. [2023-08-27 11:36:33,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 87 transitions, 935 flow [2023-08-27 11:36:33,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 87 transitions, 917 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-27 11:36:33,410 INFO L231 Difference]: Finished difference. Result has 106 places, 70 transitions, 682 flow [2023-08-27 11:36:33,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=682, PETRI_PLACES=106, PETRI_TRANSITIONS=70} [2023-08-27 11:36:33,410 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2023-08-27 11:36:33,410 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 70 transitions, 682 flow [2023-08-27 11:36:33,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:33,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:33,411 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 11:36:33,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 11:36:33,411 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:33,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1427747899, now seen corresponding path program 2 times [2023-08-27 11:36:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:33,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094038476] [2023-08-27 11:36:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:33,582 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 11:36:33,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094038476] [2023-08-27 11:36:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094038476] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100614517] [2023-08-27 11:36:33,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:36:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:33,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:33,593 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 11:36:33,638 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 11:36:33,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:36:33,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:36:33,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:33,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:33,744 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:33,744 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 11:36:33,804 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 11:36:33,825 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 11:36:33,877 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 11:36:33,892 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 11:36:33,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:33,975 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:36:33,975 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 11:36:33,977 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 35 treesize of output 27 [2023-08-27 11:36:34,014 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 11:36:34,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100614517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:34,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:34,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-27 11:36:34,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115179132] [2023-08-27 11:36:34,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:36:34,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:34,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:36:34,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2023-08-27 11:36:34,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 304 [2023-08-27 11:36:34,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 70 transitions, 682 flow. Second operand has 22 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:34,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 304 [2023-08-27 11:36:34,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:34,295 INFO L124 PetriNetUnfolderBase]: 106/349 cut-off events. [2023-08-27 11:36:34,296 INFO L125 PetriNetUnfolderBase]: For 1738/1748 co-relation queries the response was YES. [2023-08-27 11:36:34,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 349 events. 106/349 cut-off events. For 1738/1748 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1713 event pairs, 24 based on Foata normal form. 4/351 useless extension candidates. Maximal degree in co-relation 1596. Up to 78 conditions per place. [2023-08-27 11:36:34,296 INFO L140 encePairwiseOnDemand]: 293/304 looper letters, 34 selfloop transitions, 5 changer transitions 52/97 dead transitions. [2023-08-27 11:36:34,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 97 transitions, 1048 flow [2023-08-27 11:36:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:36:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:36:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1148 transitions. [2023-08-27 11:36:34,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31469298245614036 [2023-08-27 11:36:34,298 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1148 transitions. [2023-08-27 11:36:34,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1148 transitions. [2023-08-27 11:36:34,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:34,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1148 transitions. [2023-08-27 11:36:34,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 95.66666666666667) internal successors, (1148), 12 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,302 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 304.0) internal successors, (3952), 13 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,302 INFO L175 Difference]: Start difference. First operand has 106 places, 70 transitions, 682 flow. Second operand 12 states and 1148 transitions. [2023-08-27 11:36:34,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 97 transitions, 1048 flow [2023-08-27 11:36:34,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 982 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-08-27 11:36:34,306 INFO L231 Difference]: Finished difference. Result has 104 places, 41 transitions, 336 flow [2023-08-27 11:36:34,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=104, PETRI_TRANSITIONS=41} [2023-08-27 11:36:34,306 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 54 predicate places. [2023-08-27 11:36:34,306 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 41 transitions, 336 flow [2023-08-27 11:36:34,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:34,307 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 11:36:34,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 11:36:34,510 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 11:36:34,511 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 12 more)] === [2023-08-27 11:36:34,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash -340182113, now seen corresponding path program 2 times [2023-08-27 11:36:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:34,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178712003] [2023-08-27 11:36:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:34,711 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 11:36:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178712003] [2023-08-27 11:36:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178712003] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337676215] [2023-08-27 11:36:34,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:36:34,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:34,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:34,719 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 11:36:34,720 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 11:36:34,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:36:34,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:36:34,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:36:34,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:34,818 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:36:34,818 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 11:36:34,873 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 11:36:34,932 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 11:36:34,956 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 11:36:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:36:34,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:36:34,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337676215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:34,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:36:34,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 11:36:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146002726] [2023-08-27 11:36:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:36:34,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:34,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:36:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-27 11:36:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 304 [2023-08-27 11:36:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 41 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:34,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 304 [2023-08-27 11:36:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:35,046 INFO L124 PetriNetUnfolderBase]: 27/121 cut-off events. [2023-08-27 11:36:35,046 INFO L125 PetriNetUnfolderBase]: For 359/361 co-relation queries the response was YES. [2023-08-27 11:36:35,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 121 events. 27/121 cut-off events. For 359/361 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 326 event pairs, 14 based on Foata normal form. 2/122 useless extension candidates. Maximal degree in co-relation 483. Up to 49 conditions per place. [2023-08-27 11:36:35,047 INFO L140 encePairwiseOnDemand]: 296/304 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-27 11:36:35,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 45 transitions, 415 flow [2023-08-27 11:36:35,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:36:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:36:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 804 transitions. [2023-08-27 11:36:35,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3305921052631579 [2023-08-27 11:36:35,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 804 transitions. [2023-08-27 11:36:35,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 804 transitions. [2023-08-27 11:36:35,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:35,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 804 transitions. [2023-08-27 11:36:35,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:35,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:35,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 304.0) internal successors, (2736), 9 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:35,050 INFO L175 Difference]: Start difference. First operand has 104 places, 41 transitions, 336 flow. Second operand 8 states and 804 transitions. [2023-08-27 11:36:35,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 45 transitions, 415 flow [2023-08-27 11:36:35,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 45 transitions, 305 flow, removed 5 selfloop flow, removed 27 redundant places. [2023-08-27 11:36:35,052 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-08-27 11:36:35,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=304, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-08-27 11:36:35,055 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2023-08-27 11:36:35,055 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-08-27 11:36:35,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.625) internal successors, (797), 8 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2023-08-27 11:36:35,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2023-08-27 11:36:35,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2023-08-27 11:36:35,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2023-08-27 11:36:35,063 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 11:36:35,261 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 11:36:35,261 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:35,262 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:36:35,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,277 INFO L124 PetriNetUnfolderBase]: 27/239 cut-off events. [2023-08-27 11:36:35,277 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:36:35,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 239 events. 27/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 711 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2023-08-27 11:36:35,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:36:35,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 158 transitions, 328 flow [2023-08-27 11:36:35,288 INFO L124 PetriNetUnfolderBase]: 27/239 cut-off events. [2023-08-27 11:36:35,289 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:36:35,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 239 events. 27/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 711 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2023-08-27 11:36:35,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 10640 [2023-08-27 11:36:37,898 INFO L134 LiptonReduction]: Checked pairs total: 24653 [2023-08-27 11:36:37,898 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-27 11:36:37,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:36:37,899 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:36:37,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:36:37,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:36:37,901 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2023-08-27 11:36:37,901 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 11:36:37,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:37,902 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:36:37,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:36:37,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -81476560, now seen corresponding path program 1 times [2023-08-27 11:36:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883342135] [2023-08-27 11:36:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:36:37,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:36:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:36:37,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:36:37,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:36:37,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:36:37,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:36:37,915 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:36:37,915 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:36:37,915 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:36:37,915 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:36:37,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:36:37,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,946 INFO L124 PetriNetUnfolderBase]: 38/325 cut-off events. [2023-08-27 11:36:37,946 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:36:37,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 325 events. 38/325 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1064 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-27 11:36:37,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:36:37,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,949 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:36:37,965 INFO L124 PetriNetUnfolderBase]: 38/325 cut-off events. [2023-08-27 11:36:37,966 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:36:37,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 325 events. 38/325 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1064 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-27 11:36:37,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-08-27 11:36:40,307 INFO L134 LiptonReduction]: Checked pairs total: 43519 [2023-08-27 11:36:40,308 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-27 11:36:40,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:36:40,312 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:36:40,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 11:36:40,314 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:36:40,314 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 11:36:40,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:36:40,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:40,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:36:40,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:36:40,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash 45475621, now seen corresponding path program 1 times [2023-08-27 11:36:40,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:40,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011824432] [2023-08-27 11:36:40,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:40,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:40,359 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 11:36:40,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011824432] [2023-08-27 11:36:40,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011824432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:40,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:40,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890568631] [2023-08-27 11:36:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:40,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:40,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 371 [2023-08-27 11:36:40,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 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 11:36:40,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:40,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 371 [2023-08-27 11:36:40,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:46,006 INFO L124 PetriNetUnfolderBase]: 84994/118762 cut-off events. [2023-08-27 11:36:46,006 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2023-08-27 11:36:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236930 conditions, 118762 events. 84994/118762 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 4344. Compared 880199 event pairs, 82500 based on Foata normal form. 13777/93410 useless extension candidates. Maximal degree in co-relation 116912. Up to 117274 conditions per place. [2023-08-27 11:36:46,491 INFO L140 encePairwiseOnDemand]: 346/371 looper letters, 65 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-27 11:36:46,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 305 flow [2023-08-27 11:36:46,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-08-27 11:36:46,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2023-08-27 11:36:46,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-08-27 11:36:46,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-08-27 11:36:46,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:46,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-08-27 11:36:46,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:46,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:46,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:46,495 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 183 flow. Second operand 3 states and 588 transitions. [2023-08-27 11:36:46,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 305 flow [2023-08-27 11:36:46,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 299 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-27 11:36:46,497 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 153 flow [2023-08-27 11:36:46,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-08-27 11:36:46,497 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-27 11:36:46,497 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 153 flow [2023-08-27 11:36:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 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 11:36:46,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:46,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:46,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:36:46,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:36:46,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1633728172, now seen corresponding path program 1 times [2023-08-27 11:36:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:46,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674957675] [2023-08-27 11:36:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:46,734 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 11:36:46,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:46,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674957675] [2023-08-27 11:36:46,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674957675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:46,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:46,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694078849] [2023-08-27 11:36:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:36:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:36:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:36:46,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 371 [2023-08-27 11:36:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 153 flow. Second operand has 4 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 11:36:46,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:46,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 371 [2023-08-27 11:36:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:52,396 INFO L124 PetriNetUnfolderBase]: 80932/112293 cut-off events. [2023-08-27 11:36:52,397 INFO L125 PetriNetUnfolderBase]: For 6151/6151 co-relation queries the response was YES. [2023-08-27 11:36:52,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235837 conditions, 112293 events. 80932/112293 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 4426. Compared 823436 event pairs, 39135 based on Foata normal form. 0/78812 useless extension candidates. Maximal degree in co-relation 235753. Up to 110205 conditions per place. [2023-08-27 11:36:52,873 INFO L140 encePairwiseOnDemand]: 360/371 looper letters, 79 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2023-08-27 11:36:52,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 414 flow [2023-08-27 11:36:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:36:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:36:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-08-27 11:36:52,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44002695417789756 [2023-08-27 11:36:52,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-08-27 11:36:52,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-08-27 11:36:52,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:52,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-08-27 11:36:52,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:52,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:52,890 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:52,890 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 153 flow. Second operand 4 states and 653 transitions. [2023-08-27 11:36:52,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 414 flow [2023-08-27 11:36:52,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 95 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:52,892 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 222 flow [2023-08-27 11:36:52,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-08-27 11:36:52,892 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-27 11:36:52,892 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 222 flow [2023-08-27 11:36:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 11:36:52,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:52,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:52,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 11:36:52,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:36:52,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:52,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1165639030, now seen corresponding path program 1 times [2023-08-27 11:36:52,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:52,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762340844] [2023-08-27 11:36:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:52,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:52,948 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 11:36:52,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762340844] [2023-08-27 11:36:52,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762340844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:36:52,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405730809] [2023-08-27 11:36:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:52,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:36:52,964 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 11:36:52,970 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 11:36:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:53,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:36:53,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:36:53,064 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 11:36:53,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:36:53,076 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 11:36:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405730809] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:36:53,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:36:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 11:36:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773606596] [2023-08-27 11:36:53,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:36:53,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:36:53,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:53,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:36:53,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:36:53,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 371 [2023-08-27 11:36:53,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 166.28571428571428) internal successors, (1164), 7 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:53,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:53,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 371 [2023-08-27 11:36:53,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:55,444 INFO L124 PetriNetUnfolderBase]: 27763/40377 cut-off events. [2023-08-27 11:36:55,444 INFO L125 PetriNetUnfolderBase]: For 12616/12616 co-relation queries the response was YES. [2023-08-27 11:36:55,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97088 conditions, 40377 events. 27763/40377 cut-off events. For 12616/12616 co-relation queries the response was YES. Maximal size of possible extension queue 1737. Compared 292174 event pairs, 3129 based on Foata normal form. 2804/33386 useless extension candidates. Maximal degree in co-relation 67627. Up to 19754 conditions per place. [2023-08-27 11:36:55,633 INFO L140 encePairwiseOnDemand]: 366/371 looper letters, 171 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2023-08-27 11:36:55,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 185 transitions, 900 flow [2023-08-27 11:36:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:36:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:36:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1319 transitions. [2023-08-27 11:36:55,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078937235271467 [2023-08-27 11:36:55,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1319 transitions. [2023-08-27 11:36:55,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1319 transitions. [2023-08-27 11:36:55,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:55,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1319 transitions. [2023-08-27 11:36:55,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.42857142857142) internal successors, (1319), 7 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:55,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:55,639 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:55,639 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 222 flow. Second operand 7 states and 1319 transitions. [2023-08-27 11:36:55,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 185 transitions, 900 flow [2023-08-27 11:36:55,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 185 transitions, 856 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-08-27 11:36:55,675 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 189 flow [2023-08-27 11:36:55,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2023-08-27 11:36:55,675 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-27 11:36:55,676 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 189 flow [2023-08-27 11:36:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 166.28571428571428) internal successors, (1164), 7 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:55,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:55,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:36:55,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 11:36:55,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:36:55,880 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:36:55,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:55,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1775304387, now seen corresponding path program 1 times [2023-08-27 11:36:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993543242] [2023-08-27 11:36:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:55,894 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 11:36:55,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:55,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993543242] [2023-08-27 11:36:55,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993543242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:55,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:55,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149300212] [2023-08-27 11:36:55,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:55,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:55,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:55,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 371 [2023-08-27 11:36:55,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:55,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:55,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 371 [2023-08-27 11:36:55,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:36:57,327 INFO L124 PetriNetUnfolderBase]: 20176/28861 cut-off events. [2023-08-27 11:36:57,327 INFO L125 PetriNetUnfolderBase]: For 11833/11998 co-relation queries the response was YES. [2023-08-27 11:36:57,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68578 conditions, 28861 events. 20176/28861 cut-off events. For 11833/11998 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 195173 event pairs, 19474 based on Foata normal form. 0/23421 useless extension candidates. Maximal degree in co-relation 48261. Up to 28590 conditions per place. [2023-08-27 11:36:57,433 INFO L140 encePairwiseOnDemand]: 369/371 looper letters, 49 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-08-27 11:36:57,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 277 flow [2023-08-27 11:36:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:36:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:36:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-08-27 11:36:57,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4833782569631626 [2023-08-27 11:36:57,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-08-27 11:36:57,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-08-27 11:36:57,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:36:57,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-08-27 11:36:57,434 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 11:36:57,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:57,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:57,435 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 189 flow. Second operand 3 states and 538 transitions. [2023-08-27 11:36:57,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 277 flow [2023-08-27 11:36:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 268 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 11:36:57,443 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 170 flow [2023-08-27 11:36:57,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-08-27 11:36:57,443 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-08-27 11:36:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 170 flow [2023-08-27 11:36:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:36:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:36:57,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:36:57,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:36:57,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:36:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1085354192, now seen corresponding path program 1 times [2023-08-27 11:36:57,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:36:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415398398] [2023-08-27 11:36:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:36:57,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:36:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:36:57,472 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 11:36:57,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:36:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415398398] [2023-08-27 11:36:57,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415398398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:36:57,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:36:57,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:36:57,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325873852] [2023-08-27 11:36:57,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:36:57,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:36:57,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:36:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:36:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:36:57,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 371 [2023-08-27 11:36:57,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:36:57,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:36:57,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 371 [2023-08-27 11:36:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:00,019 INFO L124 PetriNetUnfolderBase]: 31326/47035 cut-off events. [2023-08-27 11:37:00,020 INFO L125 PetriNetUnfolderBase]: For 9469/9581 co-relation queries the response was YES. [2023-08-27 11:37:00,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106036 conditions, 47035 events. 31326/47035 cut-off events. For 9469/9581 co-relation queries the response was YES. Maximal size of possible extension queue 2120. Compared 368069 event pairs, 11206 based on Foata normal form. 9/39727 useless extension candidates. Maximal degree in co-relation 106023. Up to 22751 conditions per place. [2023-08-27 11:37:00,202 INFO L140 encePairwiseOnDemand]: 353/371 looper letters, 77 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2023-08-27 11:37:00,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 493 flow [2023-08-27 11:37:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:37:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:37:00,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-27 11:37:00,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46451033243486073 [2023-08-27 11:37:00,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-27 11:37:00,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-27 11:37:00,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:00,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-27 11:37:00,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:00,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:00,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:00,205 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 170 flow. Second operand 3 states and 517 transitions. [2023-08-27 11:37:00,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 493 flow [2023-08-27 11:37:00,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:00,209 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 336 flow [2023-08-27 11:37:00,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-08-27 11:37:00,209 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-27 11:37:00,209 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 336 flow [2023-08-27 11:37:00,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:00,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:00,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:00,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:37:00,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:00,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1085354243, now seen corresponding path program 1 times [2023-08-27 11:37:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:00,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713365667] [2023-08-27 11:37:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:00,316 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 11:37:00,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:00,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713365667] [2023-08-27 11:37:00,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713365667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:00,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:00,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:37:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160035810] [2023-08-27 11:37:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:00,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:00,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:00,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:03,950 INFO L124 PetriNetUnfolderBase]: 39164/58939 cut-off events. [2023-08-27 11:37:03,950 INFO L125 PetriNetUnfolderBase]: For 48437/48559 co-relation queries the response was YES. [2023-08-27 11:37:04,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165637 conditions, 58939 events. 39164/58939 cut-off events. For 48437/48559 co-relation queries the response was YES. Maximal size of possible extension queue 2698. Compared 469762 event pairs, 11529 based on Foata normal form. 1404/60294 useless extension candidates. Maximal degree in co-relation 165621. Up to 45855 conditions per place. [2023-08-27 11:37:04,208 INFO L140 encePairwiseOnDemand]: 352/371 looper letters, 177 selfloop transitions, 42 changer transitions 0/227 dead transitions. [2023-08-27 11:37:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 227 transitions, 1416 flow [2023-08-27 11:37:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:37:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:37:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1102 transitions. [2023-08-27 11:37:04,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42433577204466694 [2023-08-27 11:37:04,210 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1102 transitions. [2023-08-27 11:37:04,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1102 transitions. [2023-08-27 11:37:04,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:04,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1102 transitions. [2023-08-27 11:37:04,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.42857142857142) internal successors, (1102), 7 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 11:37:04,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:04,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:04,212 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 336 flow. Second operand 7 states and 1102 transitions. [2023-08-27 11:37:04,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 227 transitions, 1416 flow [2023-08-27 11:37:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 227 transitions, 1318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:37:04,247 INFO L231 Difference]: Finished difference. Result has 80 places, 110 transitions, 705 flow [2023-08-27 11:37:04,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=705, PETRI_PLACES=80, PETRI_TRANSITIONS=110} [2023-08-27 11:37:04,247 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-08-27 11:37:04,248 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 110 transitions, 705 flow [2023-08-27 11:37:04,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:04,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:04,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:04,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:37:04,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:04,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:04,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2076631646, now seen corresponding path program 1 times [2023-08-27 11:37:04,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:04,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507470433] [2023-08-27 11:37:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:04,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:04,380 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 11:37:04,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507470433] [2023-08-27 11:37:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507470433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:04,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923884362] [2023-08-27 11:37:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:04,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:04,398 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 11:37:04,399 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 11:37:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:04,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:37:04,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:04,493 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:04,493 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 11:37:04,508 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 11:37:04,561 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 11:37:04,583 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 11:37:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:04,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:04,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923884362] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:04,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:04,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:37:04,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386644096] [2023-08-27 11:37:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:04,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:37:04,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:04,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 110 transitions, 705 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:04,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:04,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:04,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:08,625 INFO L124 PetriNetUnfolderBase]: 38126/57117 cut-off events. [2023-08-27 11:37:08,625 INFO L125 PetriNetUnfolderBase]: For 91387/91409 co-relation queries the response was YES. [2023-08-27 11:37:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191375 conditions, 57117 events. 38126/57117 cut-off events. For 91387/91409 co-relation queries the response was YES. Maximal size of possible extension queue 2625. Compared 446874 event pairs, 13255 based on Foata normal form. 231/57341 useless extension candidates. Maximal degree in co-relation 191355. Up to 52963 conditions per place. [2023-08-27 11:37:09,121 INFO L140 encePairwiseOnDemand]: 362/371 looper letters, 140 selfloop transitions, 28 changer transitions 0/176 dead transitions. [2023-08-27 11:37:09,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 176 transitions, 1426 flow [2023-08-27 11:37:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:37:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:37:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 755 transitions. [2023-08-27 11:37:09,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40700808625336926 [2023-08-27 11:37:09,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 755 transitions. [2023-08-27 11:37:09,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 755 transitions. [2023-08-27 11:37:09,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:09,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 755 transitions. [2023-08-27 11:37:09,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.0) internal successors, (755), 5 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:09,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:09,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:09,126 INFO L175 Difference]: Start difference. First operand has 80 places, 110 transitions, 705 flow. Second operand 5 states and 755 transitions. [2023-08-27 11:37:09,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 176 transitions, 1426 flow [2023-08-27 11:37:09,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 176 transitions, 1399 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:09,183 INFO L231 Difference]: Finished difference. Result has 84 places, 126 transitions, 936 flow [2023-08-27 11:37:09,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=936, PETRI_PLACES=84, PETRI_TRANSITIONS=126} [2023-08-27 11:37:09,184 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-08-27 11:37:09,184 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 126 transitions, 936 flow [2023-08-27 11:37:09,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:09,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:09,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:09,188 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 11:37:09,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-27 11:37:09,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:09,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:09,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2076631697, now seen corresponding path program 1 times [2023-08-27 11:37:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:09,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291899152] [2023-08-27 11:37:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:09,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:09,506 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 11:37:09,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:09,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291899152] [2023-08-27 11:37:09,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291899152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:09,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589107750] [2023-08-27 11:37:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:09,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:09,521 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 11:37:09,599 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 11:37:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:09,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:37:09,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:09,712 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:09,712 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 11:37:09,735 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 11:37:09,760 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 11:37:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:09,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589107750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2023-08-27 11:37:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581329936] [2023-08-27 11:37:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:37:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:37:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-27 11:37:09,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 371 [2023-08-27 11:37:09,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 126 transitions, 936 flow. Second operand has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:09,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:09,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 371 [2023-08-27 11:37:09,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:14,099 INFO L124 PetriNetUnfolderBase]: 41015/62818 cut-off events. [2023-08-27 11:37:14,100 INFO L125 PetriNetUnfolderBase]: For 116996/117762 co-relation queries the response was YES. [2023-08-27 11:37:14,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214392 conditions, 62818 events. 41015/62818 cut-off events. For 116996/117762 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 518966 event pairs, 14179 based on Foata normal form. 923/63459 useless extension candidates. Maximal degree in co-relation 214370. Up to 39532 conditions per place. [2023-08-27 11:37:14,459 INFO L140 encePairwiseOnDemand]: 354/371 looper letters, 127 selfloop transitions, 41 changer transitions 0/176 dead transitions. [2023-08-27 11:37:14,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 176 transitions, 1539 flow [2023-08-27 11:37:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:37:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:37:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2023-08-27 11:37:14,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.433288409703504 [2023-08-27 11:37:14,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2023-08-27 11:37:14,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2023-08-27 11:37:14,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:14,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2023-08-27 11:37:14,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,462 INFO L175 Difference]: Start difference. First operand has 84 places, 126 transitions, 936 flow. Second operand 4 states and 643 transitions. [2023-08-27 11:37:14,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 176 transitions, 1539 flow [2023-08-27 11:37:14,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 176 transitions, 1485 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 11:37:14,507 INFO L231 Difference]: Finished difference. Result has 86 places, 143 transitions, 1235 flow [2023-08-27 11:37:14,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1235, PETRI_PLACES=86, PETRI_TRANSITIONS=143} [2023-08-27 11:37:14,507 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2023-08-27 11:37:14,507 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 143 transitions, 1235 flow [2023-08-27 11:37:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:14,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:14,514 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 11:37:14,712 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,SelfDestructingSolverStorable37 [2023-08-27 11:37:14,712 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:14,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash 157225466, now seen corresponding path program 1 times [2023-08-27 11:37:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:14,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069107011] [2023-08-27 11:37:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:14,745 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 11:37:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:14,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069107011] [2023-08-27 11:37:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069107011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:14,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:37:14,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374813040] [2023-08-27 11:37:14,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:14,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:37:14,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:37:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:37:14,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 371 [2023-08-27 11:37:14,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 143 transitions, 1235 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:14,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:14,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 371 [2023-08-27 11:37:14,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:20,086 INFO L124 PetriNetUnfolderBase]: 43061/66736 cut-off events. [2023-08-27 11:37:20,086 INFO L125 PetriNetUnfolderBase]: For 190534/193322 co-relation queries the response was YES. [2023-08-27 11:37:20,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244795 conditions, 66736 events. 43061/66736 cut-off events. For 190534/193322 co-relation queries the response was YES. Maximal size of possible extension queue 2966. Compared 565794 event pairs, 9842 based on Foata normal form. 1222/67613 useless extension candidates. Maximal degree in co-relation 244771. Up to 28059 conditions per place. [2023-08-27 11:37:20,713 INFO L140 encePairwiseOnDemand]: 352/371 looper letters, 196 selfloop transitions, 96 changer transitions 0/300 dead transitions. [2023-08-27 11:37:20,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 300 transitions, 2956 flow [2023-08-27 11:37:20,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:37:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:37:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2023-08-27 11:37:20,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44690026954177897 [2023-08-27 11:37:20,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2023-08-27 11:37:20,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2023-08-27 11:37:20,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:20,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2023-08-27 11:37:20,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:20,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:20,716 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:20,716 INFO L175 Difference]: Start difference. First operand has 86 places, 143 transitions, 1235 flow. Second operand 5 states and 829 transitions. [2023-08-27 11:37:20,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 300 transitions, 2956 flow [2023-08-27 11:37:21,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 300 transitions, 2879 flow, removed 38 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:21,164 INFO L231 Difference]: Finished difference. Result has 93 places, 195 transitions, 2190 flow [2023-08-27 11:37:21,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2190, PETRI_PLACES=93, PETRI_TRANSITIONS=195} [2023-08-27 11:37:21,164 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2023-08-27 11:37:21,164 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 195 transitions, 2190 flow [2023-08-27 11:37:21,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:21,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:21,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 11:37:21,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:21,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash 157225465, now seen corresponding path program 1 times [2023-08-27 11:37:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:21,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000210602] [2023-08-27 11:37:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:21,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:21,284 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 11:37:21,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:21,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000210602] [2023-08-27 11:37:21,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000210602] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:21,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777664522] [2023-08-27 11:37:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:21,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:21,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:21,286 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 11:37:21,287 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 11:37:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:21,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-27 11:37:21,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:21,386 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:21,387 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 11:37:21,401 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 11:37:21,421 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 11:37:21,463 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 11:37:21,484 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 11:37:21,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:21,543 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 11:37:21,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777664522] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:21,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:21,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:37:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541857695] [2023-08-27 11:37:21,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:21,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:37:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:37:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=132, Unknown=1, NotChecked=0, Total=182 [2023-08-27 11:37:21,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:21,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 195 transitions, 2190 flow. Second operand has 14 states, 14 states have (on average 135.78571428571428) internal successors, (1901), 14 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:21,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:21,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:21,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:22,005 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1033 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1033) c_~p~0.base) c_~p~0.offset)))) (< 0 (+ 2147483649 |c_t_funThread2of3ForFork0_#t~post6|))) is different from false [2023-08-27 11:37:31,399 INFO L124 PetriNetUnfolderBase]: 65986/102556 cut-off events. [2023-08-27 11:37:31,400 INFO L125 PetriNetUnfolderBase]: For 531711/533062 co-relation queries the response was YES. [2023-08-27 11:37:31,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430686 conditions, 102556 events. 65986/102556 cut-off events. For 531711/533062 co-relation queries the response was YES. Maximal size of possible extension queue 4956. Compared 903279 event pairs, 8562 based on Foata normal form. 4430/106817 useless extension candidates. Maximal degree in co-relation 430657. Up to 46994 conditions per place. [2023-08-27 11:37:32,082 INFO L140 encePairwiseOnDemand]: 341/371 looper letters, 538 selfloop transitions, 509 changer transitions 0/1055 dead transitions. [2023-08-27 11:37:32,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 1055 transitions, 12453 flow [2023-08-27 11:37:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 11:37:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 11:37:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3849 transitions. [2023-08-27 11:37:32,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149865229110512 [2023-08-27 11:37:32,086 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3849 transitions. [2023-08-27 11:37:32,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3849 transitions. [2023-08-27 11:37:32,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:32,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3849 transitions. [2023-08-27 11:37:32,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 153.96) internal successors, (3849), 25 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:32,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 371.0) internal successors, (9646), 26 states have internal predecessors, (9646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:32,094 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 371.0) internal successors, (9646), 26 states have internal predecessors, (9646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:32,094 INFO L175 Difference]: Start difference. First operand has 93 places, 195 transitions, 2190 flow. Second operand 25 states and 3849 transitions. [2023-08-27 11:37:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 1055 transitions, 12453 flow [2023-08-27 11:37:35,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 1055 transitions, 12453 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:37:35,070 INFO L231 Difference]: Finished difference. Result has 139 places, 699 transitions, 11006 flow [2023-08-27 11:37:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11006, PETRI_PLACES=139, PETRI_TRANSITIONS=699} [2023-08-27 11:37:35,071 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2023-08-27 11:37:35,071 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 699 transitions, 11006 flow [2023-08-27 11:37:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.78571428571428) internal successors, (1901), 14 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:35,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:35,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:35,077 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 11:37:35,275 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,SelfDestructingSolverStorable39 [2023-08-27 11:37:35,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:35,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1987789867, now seen corresponding path program 1 times [2023-08-27 11:37:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:35,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699535892] [2023-08-27 11:37:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:35,320 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 11:37:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:35,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699535892] [2023-08-27 11:37:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699535892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:37:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104014566] [2023-08-27 11:37:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:35,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:37:35,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:35,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:37:35,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:37:35,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 371 [2023-08-27 11:37:35,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 699 transitions, 11006 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:35,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 371 [2023-08-27 11:37:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:35,742 INFO L124 PetriNetUnfolderBase]: 629/1748 cut-off events. [2023-08-27 11:37:35,742 INFO L125 PetriNetUnfolderBase]: For 19837/19837 co-relation queries the response was YES. [2023-08-27 11:37:35,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9881 conditions, 1748 events. 629/1748 cut-off events. For 19837/19837 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11750 event pairs, 96 based on Foata normal form. 673/2421 useless extension candidates. Maximal degree in co-relation 9839. Up to 1434 conditions per place. [2023-08-27 11:37:35,751 INFO L140 encePairwiseOnDemand]: 364/371 looper letters, 101 selfloop transitions, 7 changer transitions 0/113 dead transitions. [2023-08-27 11:37:35,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 1580 flow [2023-08-27 11:37:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:37:35,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:37:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-08-27 11:37:35,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076819407008086 [2023-08-27 11:37:35,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-08-27 11:37:35,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-08-27 11:37:35,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:35,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-08-27 11:37:35,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:35,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:35,762 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 371.0) internal successors, (1855), 5 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:35,762 INFO L175 Difference]: Start difference. First operand has 139 places, 699 transitions, 11006 flow. Second operand 4 states and 605 transitions. [2023-08-27 11:37:35,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 1580 flow [2023-08-27 11:37:35,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 113 transitions, 1246 flow, removed 146 selfloop flow, removed 17 redundant places. [2023-08-27 11:37:35,797 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 986 flow [2023-08-27 11:37:35,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=986, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2023-08-27 11:37:35,799 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2023-08-27 11:37:35,799 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 986 flow [2023-08-27 11:37:35,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:35,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:35,799 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 11:37:35,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:35,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -392912691, now seen corresponding path program 2 times [2023-08-27 11:37:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16153347] [2023-08-27 11:37:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:35,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16153347] [2023-08-27 11:37:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16153347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475878521] [2023-08-27 11:37:35,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:35,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:35,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:35,935 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 11:37:35,937 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 11:37:36,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:36,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:36,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:37:36,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:36,042 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:36,042 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 11:37:36,083 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 11:37:36,106 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 11:37:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:36,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:36,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475878521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:36,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:36,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-27 11:37:36,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918577550] [2023-08-27 11:37:36,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:36,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:36,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:36,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:36,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:37:36,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:36,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 986 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:36,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:36,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:36,315 INFO L124 PetriNetUnfolderBase]: 567/1637 cut-off events. [2023-08-27 11:37:36,315 INFO L125 PetriNetUnfolderBase]: For 8600/8600 co-relation queries the response was YES. [2023-08-27 11:37:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7620 conditions, 1637 events. 567/1637 cut-off events. For 8600/8600 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11053 event pairs, 283 based on Foata normal form. 10/1646 useless extension candidates. Maximal degree in co-relation 7593. Up to 973 conditions per place. [2023-08-27 11:37:36,321 INFO L140 encePairwiseOnDemand]: 360/371 looper letters, 87 selfloop transitions, 26 changer transitions 0/121 dead transitions. [2023-08-27 11:37:36,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 1305 flow [2023-08-27 11:37:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:37:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:37:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 727 transitions. [2023-08-27 11:37:36,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39191374663072776 [2023-08-27 11:37:36,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 727 transitions. [2023-08-27 11:37:36,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 727 transitions. [2023-08-27 11:37:36,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:36,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 727 transitions. [2023-08-27 11:37:36,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.4) internal successors, (727), 5 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,325 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 986 flow. Second operand 5 states and 727 transitions. [2023-08-27 11:37:36,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 1305 flow [2023-08-27 11:37:36,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 121 transitions, 1277 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:37:36,333 INFO L231 Difference]: Finished difference. Result has 110 places, 104 transitions, 995 flow [2023-08-27 11:37:36,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=995, PETRI_PLACES=110, PETRI_TRANSITIONS=104} [2023-08-27 11:37:36,334 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 42 predicate places. [2023-08-27 11:37:36,334 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 995 flow [2023-08-27 11:37:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:36,334 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:36,341 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 11:37:36,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:36,539 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:36,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash 4843228, now seen corresponding path program 1 times [2023-08-27 11:37:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113464881] [2023-08-27 11:37:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:36,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:36,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:37:36,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113464881] [2023-08-27 11:37:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113464881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277736705] [2023-08-27 11:37:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:36,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:36,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:36,680 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 11:37:36,710 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 11:37:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:36,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 11:37:36,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:36,797 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:36,797 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 11:37:36,814 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 11:37:36,832 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 11:37:36,854 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 11:37:36,897 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 11:37:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:37:36,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:36,981 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:37:36,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277736705] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:36,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:36,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:37:36,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016760077] [2023-08-27 11:37:36,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:36,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:37:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:36,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:37:36,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:37:36,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 371 [2023-08-27 11:37:36,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 995 flow. Second operand has 14 states, 14 states have (on average 139.78571428571428) internal successors, (1957), 14 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:36,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:36,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 371 [2023-08-27 11:37:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:37,302 INFO L124 PetriNetUnfolderBase]: 568/1649 cut-off events. [2023-08-27 11:37:37,303 INFO L125 PetriNetUnfolderBase]: For 8919/8919 co-relation queries the response was YES. [2023-08-27 11:37:37,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 1649 events. 568/1649 cut-off events. For 8919/8919 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11058 event pairs, 92 based on Foata normal form. 4/1652 useless extension candidates. Maximal degree in co-relation 7661. Up to 1052 conditions per place. [2023-08-27 11:37:37,308 INFO L140 encePairwiseOnDemand]: 354/371 looper letters, 90 selfloop transitions, 41 changer transitions 0/139 dead transitions. [2023-08-27 11:37:37,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 139 transitions, 1523 flow [2023-08-27 11:37:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1452 transitions. [2023-08-27 11:37:37,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3913746630727763 [2023-08-27 11:37:37,310 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1452 transitions. [2023-08-27 11:37:37,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1452 transitions. [2023-08-27 11:37:37,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:37,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1452 transitions. [2023-08-27 11:37:37,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.2) internal successors, (1452), 10 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:37,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:37,313 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:37,313 INFO L175 Difference]: Start difference. First operand has 110 places, 104 transitions, 995 flow. Second operand 10 states and 1452 transitions. [2023-08-27 11:37:37,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 139 transitions, 1523 flow [2023-08-27 11:37:37,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 139 transitions, 1494 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:37:37,324 INFO L231 Difference]: Finished difference. Result has 120 places, 111 transitions, 1161 flow [2023-08-27 11:37:37,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=120, PETRI_TRANSITIONS=111} [2023-08-27 11:37:37,324 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 52 predicate places. [2023-08-27 11:37:37,324 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 1161 flow [2023-08-27 11:37:37,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 139.78571428571428) internal successors, (1957), 14 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:37,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:37,324 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 11:37:37,331 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 11:37:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:37,529 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:37,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1170039221, now seen corresponding path program 1 times [2023-08-27 11:37:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150143487] [2023-08-27 11:37:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:37,631 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 11:37:37,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150143487] [2023-08-27 11:37:37,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150143487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:37,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309821922] [2023-08-27 11:37:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:37,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:37,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:37,632 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 11:37:37,635 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 11:37:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:37,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:37,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:37,745 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:37,745 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 11:37:37,778 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 11:37:37,819 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 11:37:37,844 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 11:37:37,865 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 11:37:37,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:37,882 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1188 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1188) c_~p~0.base) c_~p~0.offset) 2147483650))) is different from false [2023-08-27 11:37:37,891 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1186 Int) (v_ArrVal_1188 (Array Int Int))) (or (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_1186)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1188) c_~p~0.base) c_~p~0.offset))) (< (+ v_ArrVal_1186 1) |c_t_funThread1of3ForFork0_#t~post9|))) is different from false [2023-08-27 11:37:37,897 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1186 Int) (v_ArrVal_1188 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_1186)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1188) c_~p~0.base) c_~p~0.offset))) (< (+ v_ArrVal_1186 1) (select .cse0 c_~p~0.offset))))) is different from false [2023-08-27 11:37:37,910 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:37:37,910 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 11:37:37,912 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 33 treesize of output 25 [2023-08-27 11:37:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:37:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309821922] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:37,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:37,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2023-08-27 11:37:37,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055655909] [2023-08-27 11:37:37,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 11:37:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 11:37:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=186, Unknown=3, NotChecked=90, Total=342 [2023-08-27 11:37:37,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 371 [2023-08-27 11:37:37,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 1161 flow. Second operand has 19 states, 19 states have (on average 123.6842105263158) internal successors, (2350), 19 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:37,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:37,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 371 [2023-08-27 11:37:37,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:38,572 INFO L124 PetriNetUnfolderBase]: 631/1804 cut-off events. [2023-08-27 11:37:38,572 INFO L125 PetriNetUnfolderBase]: For 11751/11751 co-relation queries the response was YES. [2023-08-27 11:37:38,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 1804 events. 631/1804 cut-off events. For 11751/11751 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12320 event pairs, 119 based on Foata normal form. 42/1846 useless extension candidates. Maximal degree in co-relation 8751. Up to 471 conditions per place. [2023-08-27 11:37:38,579 INFO L140 encePairwiseOnDemand]: 351/371 looper letters, 141 selfloop transitions, 80 changer transitions 0/229 dead transitions. [2023-08-27 11:37:38,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 229 transitions, 2669 flow [2023-08-27 11:37:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-27 11:37:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-27 11:37:38,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2447 transitions. [2023-08-27 11:37:38,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34714143850191514 [2023-08-27 11:37:38,581 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2447 transitions. [2023-08-27 11:37:38,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2447 transitions. [2023-08-27 11:37:38,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:38,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2447 transitions. [2023-08-27 11:37:38,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 128.78947368421052) internal successors, (2447), 19 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:38,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 371.0) internal successors, (7420), 20 states have internal predecessors, (7420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:38,587 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 371.0) internal successors, (7420), 20 states have internal predecessors, (7420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:38,587 INFO L175 Difference]: Start difference. First operand has 120 places, 111 transitions, 1161 flow. Second operand 19 states and 2447 transitions. [2023-08-27 11:37:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 229 transitions, 2669 flow [2023-08-27 11:37:38,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 229 transitions, 2656 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 11:37:38,601 INFO L231 Difference]: Finished difference. Result has 139 places, 153 transitions, 1712 flow [2023-08-27 11:37:38,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1712, PETRI_PLACES=139, PETRI_TRANSITIONS=153} [2023-08-27 11:37:38,601 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 71 predicate places. [2023-08-27 11:37:38,601 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 153 transitions, 1712 flow [2023-08-27 11:37:38,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 123.6842105263158) internal successors, (2350), 19 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:38,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:38,602 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 11:37:38,606 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 11:37:38,805 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,SelfDestructingSolverStorable43 [2023-08-27 11:37:38,805 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:38,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash -350956238, now seen corresponding path program 1 times [2023-08-27 11:37:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:38,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729726224] [2023-08-27 11:37:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:38,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:38,971 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 11:37:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729726224] [2023-08-27 11:37:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729726224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386519730] [2023-08-27 11:37:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:38,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:38,973 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:38,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 11:37:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:39,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:39,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:39,086 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:39,086 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 11:37:39,107 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 11:37:39,145 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 11:37:39,176 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 11:37:39,197 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 11:37:39,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:39,233 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1244 Int) (v_ArrVal_1245 (Array Int Int))) (or (<= (select (select (store (store |c_#memory_int| c_~p~0.base (store (select |c_#memory_int| c_~p~0.base) c_~p~0.offset v_ArrVal_1244)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1245) c_~p~0.base) c_~p~0.offset) 2147483646) (< |c_t_funThread1of3ForFork0_#t~post9| (+ v_ArrVal_1244 1)))) is different from false [2023-08-27 11:37:39,239 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1244 Int) (v_ArrVal_1245 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| c_~p~0.base))) (or (<= (select (select (store (store |c_#memory_int| c_~p~0.base (store .cse0 c_~p~0.offset v_ArrVal_1244)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1245) c_~p~0.base) c_~p~0.offset) 2147483646) (< (select .cse0 c_~p~0.offset) (+ v_ArrVal_1244 1))))) is different from false [2023-08-27 11:37:39,252 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:37:39,252 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 11:37:39,254 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 11:37:39,269 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 11:37:39,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386519730] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:39,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:39,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-27 11:37:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730357832] [2023-08-27 11:37:39,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:39,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 11:37:39,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 11:37:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=163, Unknown=3, NotChecked=54, Total=272 [2023-08-27 11:37:39,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:39,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 153 transitions, 1712 flow. Second operand has 17 states, 17 states have (on average 129.76470588235293) internal successors, (2206), 17 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:39,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:39,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:39,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:39,712 INFO L124 PetriNetUnfolderBase]: 611/1760 cut-off events. [2023-08-27 11:37:39,712 INFO L125 PetriNetUnfolderBase]: For 12714/12716 co-relation queries the response was YES. [2023-08-27 11:37:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1760 events. 611/1760 cut-off events. For 12714/12716 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12012 event pairs, 173 based on Foata normal form. 45/1805 useless extension candidates. Maximal degree in co-relation 9022. Up to 626 conditions per place. [2023-08-27 11:37:39,719 INFO L140 encePairwiseOnDemand]: 353/371 looper letters, 126 selfloop transitions, 64 changer transitions 0/198 dead transitions. [2023-08-27 11:37:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 198 transitions, 2451 flow [2023-08-27 11:37:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:37:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:37:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1617 transitions. [2023-08-27 11:37:39,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3632075471698113 [2023-08-27 11:37:39,721 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1617 transitions. [2023-08-27 11:37:39,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1617 transitions. [2023-08-27 11:37:39,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:39,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1617 transitions. [2023-08-27 11:37:39,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.75) internal successors, (1617), 12 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:39,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 371.0) internal successors, (4823), 13 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:39,725 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 371.0) internal successors, (4823), 13 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:39,725 INFO L175 Difference]: Start difference. First operand has 139 places, 153 transitions, 1712 flow. Second operand 12 states and 1617 transitions. [2023-08-27 11:37:39,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 198 transitions, 2451 flow [2023-08-27 11:37:39,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 198 transitions, 2367 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 11:37:39,743 INFO L231 Difference]: Finished difference. Result has 147 places, 155 transitions, 1781 flow [2023-08-27 11:37:39,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1781, PETRI_PLACES=147, PETRI_TRANSITIONS=155} [2023-08-27 11:37:39,744 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 79 predicate places. [2023-08-27 11:37:39,744 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 155 transitions, 1781 flow [2023-08-27 11:37:39,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 129.76470588235293) internal successors, (2206), 17 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:39,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:39,744 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 11:37:39,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:39,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-27 11:37:39,949 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:39,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -64780814, now seen corresponding path program 1 times [2023-08-27 11:37:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595814687] [2023-08-27 11:37:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:40,029 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 11:37:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595814687] [2023-08-27 11:37:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595814687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:40,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:40,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:40,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952327985] [2023-08-27 11:37:40,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:40,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:40,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:40,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:40,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2023-08-27 11:37:40,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 155 transitions, 1781 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:40,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2023-08-27 11:37:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:40,365 INFO L124 PetriNetUnfolderBase]: 667/1944 cut-off events. [2023-08-27 11:37:40,366 INFO L125 PetriNetUnfolderBase]: For 13852/13852 co-relation queries the response was YES. [2023-08-27 11:37:40,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9981 conditions, 1944 events. 667/1944 cut-off events. For 13852/13852 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13726 event pairs, 164 based on Foata normal form. 15/1958 useless extension candidates. Maximal degree in co-relation 9946. Up to 777 conditions per place. [2023-08-27 11:37:40,376 INFO L140 encePairwiseOnDemand]: 351/371 looper letters, 137 selfloop transitions, 77 changer transitions 0/222 dead transitions. [2023-08-27 11:37:40,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 222 transitions, 2733 flow [2023-08-27 11:37:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:40,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1414 transitions. [2023-08-27 11:37:40,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38113207547169814 [2023-08-27 11:37:40,378 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1414 transitions. [2023-08-27 11:37:40,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1414 transitions. [2023-08-27 11:37:40,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:40,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1414 transitions. [2023-08-27 11:37:40,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.4) internal successors, (1414), 10 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,381 INFO L175 Difference]: Start difference. First operand has 147 places, 155 transitions, 1781 flow. Second operand 10 states and 1414 transitions. [2023-08-27 11:37:40,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 222 transitions, 2733 flow [2023-08-27 11:37:40,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 222 transitions, 2675 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 11:37:40,403 INFO L231 Difference]: Finished difference. Result has 157 places, 169 transitions, 2198 flow [2023-08-27 11:37:40,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2198, PETRI_PLACES=157, PETRI_TRANSITIONS=169} [2023-08-27 11:37:40,404 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 89 predicate places. [2023-08-27 11:37:40,404 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 169 transitions, 2198 flow [2023-08-27 11:37:40,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:40,404 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 11:37:40,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 11:37:40,404 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:40,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -64780863, now seen corresponding path program 1 times [2023-08-27 11:37:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928073796] [2023-08-27 11:37:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:40,442 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 11:37:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928073796] [2023-08-27 11:37:40,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928073796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:40,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:40,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:37:40,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019840609] [2023-08-27 11:37:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:40,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:37:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:37:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:37:40,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 371 [2023-08-27 11:37:40,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 169 transitions, 2198 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:40,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:40,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 371 [2023-08-27 11:37:40,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:40,754 INFO L124 PetriNetUnfolderBase]: 690/2019 cut-off events. [2023-08-27 11:37:40,755 INFO L125 PetriNetUnfolderBase]: For 20856/20856 co-relation queries the response was YES. [2023-08-27 11:37:40,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2019 events. 690/2019 cut-off events. For 20856/20856 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 14429 event pairs, 304 based on Foata normal form. 26/2041 useless extension candidates. Maximal degree in co-relation 11311. Up to 1216 conditions per place. [2023-08-27 11:37:40,765 INFO L140 encePairwiseOnDemand]: 355/371 looper letters, 130 selfloop transitions, 61 changer transitions 0/199 dead transitions. [2023-08-27 11:37:40,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 199 transitions, 2848 flow [2023-08-27 11:37:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:37:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:37:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2023-08-27 11:37:40,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075471698113208 [2023-08-27 11:37:40,766 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2023-08-27 11:37:40,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2023-08-27 11:37:40,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:40,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2023-08-27 11:37:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,768 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:40,768 INFO L175 Difference]: Start difference. First operand has 157 places, 169 transitions, 2198 flow. Second operand 5 states and 756 transitions. [2023-08-27 11:37:40,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 199 transitions, 2848 flow [2023-08-27 11:37:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 199 transitions, 2601 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-08-27 11:37:40,797 INFO L231 Difference]: Finished difference. Result has 159 places, 179 transitions, 2350 flow [2023-08-27 11:37:40,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2350, PETRI_PLACES=159, PETRI_TRANSITIONS=179} [2023-08-27 11:37:40,798 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 91 predicate places. [2023-08-27 11:37:40,798 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 179 transitions, 2350 flow [2023-08-27 11:37:40,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:40,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:40,798 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 11:37:40,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 11:37:40,798 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:40,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:40,798 INFO L85 PathProgramCache]: Analyzing trace with hash 214578111, now seen corresponding path program 2 times [2023-08-27 11:37:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546742773] [2023-08-27 11:37:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:40,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546742773] [2023-08-27 11:37:40,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546742773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448887469] [2023-08-27 11:37:40,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:40,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:40,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:40,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 11:37:41,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:41,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:41,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:41,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:41,108 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:41,108 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 11:37:41,156 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 11:37:41,182 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 11:37:41,214 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 11:37:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:41,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:41,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448887469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:41,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:41,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-08-27 11:37:41,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207926997] [2023-08-27 11:37:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:37:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:37:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:37:41,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:41,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 179 transitions, 2350 flow. Second operand has 8 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:41,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:41,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:41,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:41,584 INFO L124 PetriNetUnfolderBase]: 675/2003 cut-off events. [2023-08-27 11:37:41,585 INFO L125 PetriNetUnfolderBase]: For 21585/21620 co-relation queries the response was YES. [2023-08-27 11:37:41,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11286 conditions, 2003 events. 675/2003 cut-off events. For 21585/21620 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14263 event pairs, 242 based on Foata normal form. 27/2024 useless extension candidates. Maximal degree in co-relation 11245. Up to 842 conditions per place. [2023-08-27 11:37:41,594 INFO L140 encePairwiseOnDemand]: 355/371 looper letters, 143 selfloop transitions, 62 changer transitions 0/213 dead transitions. [2023-08-27 11:37:41,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 3048 flow [2023-08-27 11:37:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:37:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:37:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1217 transitions. [2023-08-27 11:37:41,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3644803833483079 [2023-08-27 11:37:41,595 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1217 transitions. [2023-08-27 11:37:41,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1217 transitions. [2023-08-27 11:37:41,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:41,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1217 transitions. [2023-08-27 11:37:41,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:41,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:41,598 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:41,598 INFO L175 Difference]: Start difference. First operand has 159 places, 179 transitions, 2350 flow. Second operand 9 states and 1217 transitions. [2023-08-27 11:37:41,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 3048 flow [2023-08-27 11:37:41,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 213 transitions, 2976 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:41,624 INFO L231 Difference]: Finished difference. Result has 165 places, 177 transitions, 2420 flow [2023-08-27 11:37:41,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2420, PETRI_PLACES=165, PETRI_TRANSITIONS=177} [2023-08-27 11:37:41,625 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 97 predicate places. [2023-08-27 11:37:41,625 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 177 transitions, 2420 flow [2023-08-27 11:37:41,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:41,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:41,625 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 11:37:41,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:41,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-27 11:37:41,837 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:41,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash -756502186, now seen corresponding path program 2 times [2023-08-27 11:37:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:41,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964792347] [2023-08-27 11:37:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964792347] [2023-08-27 11:37:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964792347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552298085] [2023-08-27 11:37:41,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:41,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:41,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:41,959 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:41,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-27 11:37:42,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:42,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:42,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:42,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:42,083 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:42,083 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 11:37:42,131 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 11:37:42,178 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 11:37:42,203 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 11:37:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:42,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552298085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:42,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2023-08-27 11:37:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017127258] [2023-08-27 11:37:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:42,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:37:42,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:42,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:37:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:37:42,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:42,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 177 transitions, 2420 flow. Second operand has 8 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:42,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:42,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:42,515 INFO L124 PetriNetUnfolderBase]: 670/1977 cut-off events. [2023-08-27 11:37:42,515 INFO L125 PetriNetUnfolderBase]: For 21957/21969 co-relation queries the response was YES. [2023-08-27 11:37:42,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11276 conditions, 1977 events. 670/1977 cut-off events. For 21957/21969 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 13938 event pairs, 210 based on Foata normal form. 11/1984 useless extension candidates. Maximal degree in co-relation 11233. Up to 703 conditions per place. [2023-08-27 11:37:42,524 INFO L140 encePairwiseOnDemand]: 354/371 looper letters, 130 selfloop transitions, 73 changer transitions 0/211 dead transitions. [2023-08-27 11:37:42,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 211 transitions, 3081 flow [2023-08-27 11:37:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:37:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:37:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1089 transitions. [2023-08-27 11:37:42,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3669137466307278 [2023-08-27 11:37:42,526 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1089 transitions. [2023-08-27 11:37:42,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1089 transitions. [2023-08-27 11:37:42,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1089 transitions. [2023-08-27 11:37:42,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.125) internal successors, (1089), 8 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,528 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,529 INFO L175 Difference]: Start difference. First operand has 165 places, 177 transitions, 2420 flow. Second operand 8 states and 1089 transitions. [2023-08-27 11:37:42,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 211 transitions, 3081 flow [2023-08-27 11:37:42,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 211 transitions, 3008 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 11:37:42,556 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 2497 flow [2023-08-27 11:37:42,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2497, PETRI_PLACES=167, PETRI_TRANSITIONS=176} [2023-08-27 11:37:42,556 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 99 predicate places. [2023-08-27 11:37:42,556 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 2497 flow [2023-08-27 11:37:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.25) internal successors, (1034), 8 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:42,556 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] [2023-08-27 11:37:42,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:42,761 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:42,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 523200046, now seen corresponding path program 1 times [2023-08-27 11:37:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280823391] [2023-08-27 11:37:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280823391] [2023-08-27 11:37:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280823391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:42,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:37:42,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250554563] [2023-08-27 11:37:42,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:42,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:37:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:37:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:37:42,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 371 [2023-08-27 11:37:42,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 176 transitions, 2497 flow. Second operand has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:42,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:42,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 371 [2023-08-27 11:37:42,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:43,110 INFO L124 PetriNetUnfolderBase]: 670/2011 cut-off events. [2023-08-27 11:37:43,110 INFO L125 PetriNetUnfolderBase]: For 22860/22860 co-relation queries the response was YES. [2023-08-27 11:37:43,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11619 conditions, 2011 events. 670/2011 cut-off events. For 22860/22860 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14465 event pairs, 220 based on Foata normal form. 12/2017 useless extension candidates. Maximal degree in co-relation 11576. Up to 1042 conditions per place. [2023-08-27 11:37:43,120 INFO L140 encePairwiseOnDemand]: 354/371 looper letters, 146 selfloop transitions, 67 changer transitions 0/221 dead transitions. [2023-08-27 11:37:43,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 221 transitions, 3311 flow [2023-08-27 11:37:43,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:37:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:37:43,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1042 transitions. [2023-08-27 11:37:43,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012321909896034 [2023-08-27 11:37:43,121 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1042 transitions. [2023-08-27 11:37:43,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1042 transitions. [2023-08-27 11:37:43,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:43,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1042 transitions. [2023-08-27 11:37:43,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,123 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,123 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 2497 flow. Second operand 7 states and 1042 transitions. [2023-08-27 11:37:43,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 221 transitions, 3311 flow [2023-08-27 11:37:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 221 transitions, 3171 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-27 11:37:43,151 INFO L231 Difference]: Finished difference. Result has 168 places, 185 transitions, 2740 flow [2023-08-27 11:37:43,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2740, PETRI_PLACES=168, PETRI_TRANSITIONS=185} [2023-08-27 11:37:43,152 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 100 predicate places. [2023-08-27 11:37:43,152 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 185 transitions, 2740 flow [2023-08-27 11:37:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:43,152 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] [2023-08-27 11:37:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 11:37:43,152 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:43,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash 523199997, now seen corresponding path program 1 times [2023-08-27 11:37:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:43,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583407766] [2023-08-27 11:37:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:43,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:43,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583407766] [2023-08-27 11:37:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583407766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:43,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:37:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73556078] [2023-08-27 11:37:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:37:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:37:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:37:43,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 371 [2023-08-27 11:37:43,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 185 transitions, 2740 flow. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:43,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:43,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 371 [2023-08-27 11:37:43,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:43,492 INFO L124 PetriNetUnfolderBase]: 668/2006 cut-off events. [2023-08-27 11:37:43,493 INFO L125 PetriNetUnfolderBase]: For 26358/26358 co-relation queries the response was YES. [2023-08-27 11:37:43,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11979 conditions, 2006 events. 668/2006 cut-off events. For 26358/26358 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14453 event pairs, 336 based on Foata normal form. 16/2016 useless extension candidates. Maximal degree in co-relation 11935. Up to 1335 conditions per place. [2023-08-27 11:37:43,503 INFO L140 encePairwiseOnDemand]: 355/371 looper letters, 133 selfloop transitions, 62 changer transitions 0/203 dead transitions. [2023-08-27 11:37:43,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 203 transitions, 3283 flow [2023-08-27 11:37:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:37:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:37:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-27 11:37:43,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048517520215633 [2023-08-27 11:37:43,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-27 11:37:43,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-27 11:37:43,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:43,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-27 11:37:43,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,506 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,506 INFO L175 Difference]: Start difference. First operand has 168 places, 185 transitions, 2740 flow. Second operand 5 states and 751 transitions. [2023-08-27 11:37:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 203 transitions, 3283 flow [2023-08-27 11:37:43,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 203 transitions, 3243 flow, removed 20 selfloop flow, removed 0 redundant places. [2023-08-27 11:37:43,538 INFO L231 Difference]: Finished difference. Result has 174 places, 188 transitions, 2999 flow [2023-08-27 11:37:43,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2999, PETRI_PLACES=174, PETRI_TRANSITIONS=188} [2023-08-27 11:37:43,538 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 106 predicate places. [2023-08-27 11:37:43,538 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 188 transitions, 2999 flow [2023-08-27 11:37:43,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 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 11:37:43,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:43,539 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 11:37:43,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-27 11:37:43,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:43,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1766290129, now seen corresponding path program 1 times [2023-08-27 11:37:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:43,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034202852] [2023-08-27 11:37:43,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:43,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:43,606 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 11:37:43,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034202852] [2023-08-27 11:37:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034202852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:43,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:43,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956315748] [2023-08-27 11:37:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:43,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:43,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:43,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:43,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2023-08-27 11:37:43,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 188 transitions, 2999 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:43,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2023-08-27 11:37:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:43,949 INFO L124 PetriNetUnfolderBase]: 705/2118 cut-off events. [2023-08-27 11:37:43,949 INFO L125 PetriNetUnfolderBase]: For 28996/29034 co-relation queries the response was YES. [2023-08-27 11:37:43,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13058 conditions, 2118 events. 705/2118 cut-off events. For 28996/29034 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15437 event pairs, 273 based on Foata normal form. 11/2121 useless extension candidates. Maximal degree in co-relation 13012. Up to 1212 conditions per place. [2023-08-27 11:37:43,960 INFO L140 encePairwiseOnDemand]: 355/371 looper letters, 161 selfloop transitions, 81 changer transitions 0/250 dead transitions. [2023-08-27 11:37:43,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 250 transitions, 4026 flow [2023-08-27 11:37:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1400 transitions. [2023-08-27 11:37:43,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37735849056603776 [2023-08-27 11:37:43,962 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1400 transitions. [2023-08-27 11:37:43,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1400 transitions. [2023-08-27 11:37:43,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:43,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1400 transitions. [2023-08-27 11:37:43,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,965 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:43,965 INFO L175 Difference]: Start difference. First operand has 174 places, 188 transitions, 2999 flow. Second operand 10 states and 1400 transitions. [2023-08-27 11:37:43,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 250 transitions, 4026 flow [2023-08-27 11:37:44,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 250 transitions, 4015 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 11:37:44,003 INFO L231 Difference]: Finished difference. Result has 187 places, 206 transitions, 3518 flow [2023-08-27 11:37:44,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3518, PETRI_PLACES=187, PETRI_TRANSITIONS=206} [2023-08-27 11:37:44,004 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 119 predicate places. [2023-08-27 11:37:44,004 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 206 transitions, 3518 flow [2023-08-27 11:37:44,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:44,004 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 11:37:44,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-27 11:37:44,004 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:44,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1846768829, now seen corresponding path program 1 times [2023-08-27 11:37:44,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:44,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305529262] [2023-08-27 11:37:44,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:44,069 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 11:37:44,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:44,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305529262] [2023-08-27 11:37:44,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305529262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:44,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:44,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:44,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018286622] [2023-08-27 11:37:44,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:44,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:44,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:44,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:44,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:44,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2023-08-27 11:37:44,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 206 transitions, 3518 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:44,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2023-08-27 11:37:44,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:44,429 INFO L124 PetriNetUnfolderBase]: 716/2146 cut-off events. [2023-08-27 11:37:44,429 INFO L125 PetriNetUnfolderBase]: For 33955/33993 co-relation queries the response was YES. [2023-08-27 11:37:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13979 conditions, 2146 events. 716/2146 cut-off events. For 33955/33993 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15708 event pairs, 274 based on Foata normal form. 11/2153 useless extension candidates. Maximal degree in co-relation 13928. Up to 1274 conditions per place. [2023-08-27 11:37:44,441 INFO L140 encePairwiseOnDemand]: 355/371 looper letters, 157 selfloop transitions, 82 changer transitions 0/247 dead transitions. [2023-08-27 11:37:44,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 247 transitions, 4368 flow [2023-08-27 11:37:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1395 transitions. [2023-08-27 11:37:44,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37601078167115903 [2023-08-27 11:37:44,442 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1395 transitions. [2023-08-27 11:37:44,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1395 transitions. [2023-08-27 11:37:44,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:44,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1395 transitions. [2023-08-27 11:37:44,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 139.5) internal successors, (1395), 10 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,445 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,445 INFO L175 Difference]: Start difference. First operand has 187 places, 206 transitions, 3518 flow. Second operand 10 states and 1395 transitions. [2023-08-27 11:37:44,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 247 transitions, 4368 flow [2023-08-27 11:37:44,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 247 transitions, 4350 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-27 11:37:44,492 INFO L231 Difference]: Finished difference. Result has 200 places, 215 transitions, 3925 flow [2023-08-27 11:37:44,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3925, PETRI_PLACES=200, PETRI_TRANSITIONS=215} [2023-08-27 11:37:44,493 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 132 predicate places. [2023-08-27 11:37:44,493 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 215 transitions, 3925 flow [2023-08-27 11:37:44,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:44,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:44,493 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 11:37:44,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 11:37:44,493 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:44,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:44,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2102940533, now seen corresponding path program 2 times [2023-08-27 11:37:44,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:44,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245042214] [2023-08-27 11:37:44,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:44,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:44,622 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 11:37:44,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245042214] [2023-08-27 11:37:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245042214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:44,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498007309] [2023-08-27 11:37:44,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:44,624 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:44,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-27 11:37:44,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:44,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:44,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:44,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:44,779 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:44,779 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 11:37:44,826 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 11:37:44,852 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 11:37:44,898 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 11:37:44,916 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 11:37:44,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:44,968 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:37:44,968 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 11:37:44,970 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 35 treesize of output 27 [2023-08-27 11:37:45,003 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 11:37:45,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498007309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:45,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2023-08-27 11:37:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277589936] [2023-08-27 11:37:45,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 11:37:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 11:37:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=244, Unknown=6, NotChecked=0, Total=306 [2023-08-27 11:37:45,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 371 [2023-08-27 11:37:45,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 215 transitions, 3925 flow. Second operand has 18 states, 18 states have (on average 124.05555555555556) internal successors, (2233), 18 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:45,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:45,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 371 [2023-08-27 11:37:45,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:45,741 INFO L124 PetriNetUnfolderBase]: 708/2131 cut-off events. [2023-08-27 11:37:45,741 INFO L125 PetriNetUnfolderBase]: For 37183/37223 co-relation queries the response was YES. [2023-08-27 11:37:45,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14470 conditions, 2131 events. 708/2131 cut-off events. For 37183/37223 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15444 event pairs, 120 based on Foata normal form. 16/2145 useless extension candidates. Maximal degree in co-relation 14415. Up to 674 conditions per place. [2023-08-27 11:37:45,753 INFO L140 encePairwiseOnDemand]: 354/371 looper letters, 167 selfloop transitions, 119 changer transitions 1/295 dead transitions. [2023-08-27 11:37:45,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 295 transitions, 5335 flow [2023-08-27 11:37:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 11:37:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 11:37:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2922 transitions. [2023-08-27 11:37:45,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424352513770069 [2023-08-27 11:37:45,869 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2922 transitions. [2023-08-27 11:37:45,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2922 transitions. [2023-08-27 11:37:45,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:45,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2922 transitions. [2023-08-27 11:37:45,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 127.04347826086956) internal successors, (2922), 23 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:45,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 371.0) internal successors, (8904), 24 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:45,895 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 371.0) internal successors, (8904), 24 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:45,895 INFO L175 Difference]: Start difference. First operand has 200 places, 215 transitions, 3925 flow. Second operand 23 states and 2922 transitions. [2023-08-27 11:37:45,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 295 transitions, 5335 flow [2023-08-27 11:37:45,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 295 transitions, 5142 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-27 11:37:45,984 INFO L231 Difference]: Finished difference. Result has 223 places, 239 transitions, 4377 flow [2023-08-27 11:37:45,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4377, PETRI_PLACES=223, PETRI_TRANSITIONS=239} [2023-08-27 11:37:45,984 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 155 predicate places. [2023-08-27 11:37:45,985 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 239 transitions, 4377 flow [2023-08-27 11:37:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 124.05555555555556) internal successors, (2233), 18 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:45,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:45,985 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:45,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:46,189 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:46,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1075982965, now seen corresponding path program 2 times [2023-08-27 11:37:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491063167] [2023-08-27 11:37:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:46,364 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:46,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491063167] [2023-08-27 11:37:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491063167] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981878175] [2023-08-27 11:37:46,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:46,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:46,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:46,386 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:46,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-27 11:37:46,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:46,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:46,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:46,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:46,523 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:46,524 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 11:37:46,566 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 11:37:46,608 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 11:37:46,638 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 11:37:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:37:46,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:46,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981878175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:46,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:46,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2023-08-27 11:37:46,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768083550] [2023-08-27 11:37:46,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:46,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:37:46,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:37:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-27 11:37:46,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:46,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 239 transitions, 4377 flow. Second operand has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:46,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:46,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:46,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:47,049 INFO L124 PetriNetUnfolderBase]: 702/2101 cut-off events. [2023-08-27 11:37:47,049 INFO L125 PetriNetUnfolderBase]: For 39277/39321 co-relation queries the response was YES. [2023-08-27 11:37:47,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14547 conditions, 2101 events. 702/2101 cut-off events. For 39277/39321 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15231 event pairs, 212 based on Foata normal form. 10/2108 useless extension candidates. Maximal degree in co-relation 14487. Up to 756 conditions per place. [2023-08-27 11:37:47,064 INFO L140 encePairwiseOnDemand]: 359/371 looper letters, 187 selfloop transitions, 55 changer transitions 0/250 dead transitions. [2023-08-27 11:37:47,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 250 transitions, 4838 flow [2023-08-27 11:37:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:37:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:37:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 994 transitions. [2023-08-27 11:37:47,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38274932614555257 [2023-08-27 11:37:47,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 994 transitions. [2023-08-27 11:37:47,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 994 transitions. [2023-08-27 11:37:47,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:47,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 994 transitions. [2023-08-27 11:37:47,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.0) internal successors, (994), 7 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:47,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:47,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:47,068 INFO L175 Difference]: Start difference. First operand has 223 places, 239 transitions, 4377 flow. Second operand 7 states and 994 transitions. [2023-08-27 11:37:47,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 250 transitions, 4838 flow [2023-08-27 11:37:47,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 250 transitions, 4589 flow, removed 26 selfloop flow, removed 15 redundant places. [2023-08-27 11:37:47,135 INFO L231 Difference]: Finished difference. Result has 211 places, 235 transitions, 4106 flow [2023-08-27 11:37:47,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3996, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4106, PETRI_PLACES=211, PETRI_TRANSITIONS=235} [2023-08-27 11:37:47,135 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 143 predicate places. [2023-08-27 11:37:47,136 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 235 transitions, 4106 flow [2023-08-27 11:37:47,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:47,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:47,136 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 11:37:47,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-27 11:37:47,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-27 11:37:47,340 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:47,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:47,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1851338774, now seen corresponding path program 2 times [2023-08-27 11:37:47,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:47,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422598820] [2023-08-27 11:37:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:47,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422598820] [2023-08-27 11:37:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422598820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876223778] [2023-08-27 11:37:47,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:47,510 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:47,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-27 11:37:47,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:47,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:47,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:47,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:47,629 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:47,629 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 11:37:47,682 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 11:37:47,742 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 11:37:47,766 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 11:37:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:47,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876223778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:47,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:47,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 14 [2023-08-27 11:37:47,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183332910] [2023-08-27 11:37:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:47,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:37:47,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:47,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:37:47,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-08-27 11:37:47,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:47,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 235 transitions, 4106 flow. Second operand has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:47,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:47,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:47,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:48,216 INFO L124 PetriNetUnfolderBase]: 696/2103 cut-off events. [2023-08-27 11:37:48,216 INFO L125 PetriNetUnfolderBase]: For 36699/36721 co-relation queries the response was YES. [2023-08-27 11:37:48,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 2103 events. 696/2103 cut-off events. For 36699/36721 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15225 event pairs, 187 based on Foata normal form. 10/2110 useless extension candidates. Maximal degree in co-relation 14050. Up to 928 conditions per place. [2023-08-27 11:37:48,230 INFO L140 encePairwiseOnDemand]: 358/371 looper letters, 190 selfloop transitions, 67 changer transitions 2/267 dead transitions. [2023-08-27 11:37:48,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 267 transitions, 4957 flow [2023-08-27 11:37:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:37:48,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:37:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1220 transitions. [2023-08-27 11:37:48,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36537885594489367 [2023-08-27 11:37:48,232 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1220 transitions. [2023-08-27 11:37:48,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1220 transitions. [2023-08-27 11:37:48,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:48,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1220 transitions. [2023-08-27 11:37:48,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.55555555555554) internal successors, (1220), 9 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:48,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:48,235 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:48,235 INFO L175 Difference]: Start difference. First operand has 211 places, 235 transitions, 4106 flow. Second operand 9 states and 1220 transitions. [2023-08-27 11:37:48,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 267 transitions, 4957 flow [2023-08-27 11:37:48,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 267 transitions, 4854 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:37:48,294 INFO L231 Difference]: Finished difference. Result has 217 places, 234 transitions, 4186 flow [2023-08-27 11:37:48,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4186, PETRI_PLACES=217, PETRI_TRANSITIONS=234} [2023-08-27 11:37:48,294 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 149 predicate places. [2023-08-27 11:37:48,294 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 234 transitions, 4186 flow [2023-08-27 11:37:48,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:48,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:48,295 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:48,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:48,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-27 11:37:48,499 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:48,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1075983014, now seen corresponding path program 2 times [2023-08-27 11:37:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658450196] [2023-08-27 11:37:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:48,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658450196] [2023-08-27 11:37:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658450196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413565205] [2023-08-27 11:37:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:48,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:48,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:48,646 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:48,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-27 11:37:48,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:48,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:48,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:48,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:48,805 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:48,806 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 11:37:48,846 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 11:37:48,889 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 11:37:48,918 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 11:37:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:37:48,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413565205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2023-08-27 11:37:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656573158] [2023-08-27 11:37:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:48,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:37:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:37:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:37:48,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 371 [2023-08-27 11:37:48,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 234 transitions, 4186 flow. Second operand has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:48,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:48,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 371 [2023-08-27 11:37:48,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:49,333 INFO L124 PetriNetUnfolderBase]: 639/1896 cut-off events. [2023-08-27 11:37:49,333 INFO L125 PetriNetUnfolderBase]: For 34624/34644 co-relation queries the response was YES. [2023-08-27 11:37:49,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12744 conditions, 1896 events. 639/1896 cut-off events. For 34624/34644 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13456 event pairs, 178 based on Foata normal form. 4/1897 useless extension candidates. Maximal degree in co-relation 12687. Up to 989 conditions per place. [2023-08-27 11:37:49,344 INFO L140 encePairwiseOnDemand]: 356/371 looper letters, 148 selfloop transitions, 92 changer transitions 0/248 dead transitions. [2023-08-27 11:37:49,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 248 transitions, 4749 flow [2023-08-27 11:37:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:37:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:37:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 860 transitions. [2023-08-27 11:37:49,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3863432165318958 [2023-08-27 11:37:49,346 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 860 transitions. [2023-08-27 11:37:49,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 860 transitions. [2023-08-27 11:37:49,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:49,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 860 transitions. [2023-08-27 11:37:49,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.33333333333334) internal successors, (860), 6 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:49,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:49,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:49,348 INFO L175 Difference]: Start difference. First operand has 217 places, 234 transitions, 4186 flow. Second operand 6 states and 860 transitions. [2023-08-27 11:37:49,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 248 transitions, 4749 flow [2023-08-27 11:37:49,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 248 transitions, 4618 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-27 11:37:49,398 INFO L231 Difference]: Finished difference. Result has 214 places, 232 transitions, 4200 flow [2023-08-27 11:37:49,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4200, PETRI_PLACES=214, PETRI_TRANSITIONS=232} [2023-08-27 11:37:49,398 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 146 predicate places. [2023-08-27 11:37:49,398 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 232 transitions, 4200 flow [2023-08-27 11:37:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.57142857142858) internal successors, (949), 7 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:49,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:49,398 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, 1] [2023-08-27 11:37:49,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-27 11:37:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-27 11:37:49,607 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:49,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash -686080182, now seen corresponding path program 1 times [2023-08-27 11:37:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765734562] [2023-08-27 11:37:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:49,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:49,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765734562] [2023-08-27 11:37:49,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765734562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:49,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:49,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:49,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526045677] [2023-08-27 11:37:49,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:49,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:49,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:49,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:49,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 371 [2023-08-27 11:37:49,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 232 transitions, 4200 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:49,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:49,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 371 [2023-08-27 11:37:49,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:50,022 INFO L124 PetriNetUnfolderBase]: 651/1937 cut-off events. [2023-08-27 11:37:50,022 INFO L125 PetriNetUnfolderBase]: For 36201/36205 co-relation queries the response was YES. [2023-08-27 11:37:50,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 1937 events. 651/1937 cut-off events. For 36201/36205 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13887 event pairs, 259 based on Foata normal form. 6/1938 useless extension candidates. Maximal degree in co-relation 13122. Up to 1166 conditions per place. [2023-08-27 11:37:50,034 INFO L140 encePairwiseOnDemand]: 357/371 looper letters, 179 selfloop transitions, 84 changer transitions 1/272 dead transitions. [2023-08-27 11:37:50,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 272 transitions, 5129 flow [2023-08-27 11:37:50,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1431 transitions. [2023-08-27 11:37:50,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2023-08-27 11:37:50,036 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1431 transitions. [2023-08-27 11:37:50,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1431 transitions. [2023-08-27 11:37:50,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:50,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1431 transitions. [2023-08-27 11:37:50,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 143.1) internal successors, (1431), 10 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,054 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,054 INFO L175 Difference]: Start difference. First operand has 214 places, 232 transitions, 4200 flow. Second operand 10 states and 1431 transitions. [2023-08-27 11:37:50,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 272 transitions, 5129 flow [2023-08-27 11:37:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 272 transitions, 4990 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 11:37:50,109 INFO L231 Difference]: Finished difference. Result has 222 places, 239 transitions, 4466 flow [2023-08-27 11:37:50,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4466, PETRI_PLACES=222, PETRI_TRANSITIONS=239} [2023-08-27 11:37:50,109 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 154 predicate places. [2023-08-27 11:37:50,110 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 239 transitions, 4466 flow [2023-08-27 11:37:50,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:50,110 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, 1] [2023-08-27 11:37:50,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 11:37:50,110 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:50,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:50,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1890194049, now seen corresponding path program 1 times [2023-08-27 11:37:50,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:50,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241119698] [2023-08-27 11:37:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:50,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:50,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241119698] [2023-08-27 11:37:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241119698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:50,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:50,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103397461] [2023-08-27 11:37:50,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:50,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:50,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:50,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:50,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:50,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2023-08-27 11:37:50,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 239 transitions, 4466 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:50,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2023-08-27 11:37:50,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:50,607 INFO L124 PetriNetUnfolderBase]: 646/1914 cut-off events. [2023-08-27 11:37:50,607 INFO L125 PetriNetUnfolderBase]: For 37327/37331 co-relation queries the response was YES. [2023-08-27 11:37:50,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13414 conditions, 1914 events. 646/1914 cut-off events. For 37327/37331 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13686 event pairs, 277 based on Foata normal form. 6/1917 useless extension candidates. Maximal degree in co-relation 13355. Up to 1232 conditions per place. [2023-08-27 11:37:50,620 INFO L140 encePairwiseOnDemand]: 356/371 looper letters, 174 selfloop transitions, 76 changer transitions 4/262 dead transitions. [2023-08-27 11:37:50,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 262 transitions, 5187 flow [2023-08-27 11:37:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1380 transitions. [2023-08-27 11:37:50,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719676549865229 [2023-08-27 11:37:50,622 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1380 transitions. [2023-08-27 11:37:50,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1380 transitions. [2023-08-27 11:37:50,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:50,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1380 transitions. [2023-08-27 11:37:50,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,625 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,625 INFO L175 Difference]: Start difference. First operand has 222 places, 239 transitions, 4466 flow. Second operand 10 states and 1380 transitions. [2023-08-27 11:37:50,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 262 transitions, 5187 flow [2023-08-27 11:37:50,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 262 transitions, 5119 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-27 11:37:50,687 INFO L231 Difference]: Finished difference. Result has 232 places, 241 transitions, 4629 flow [2023-08-27 11:37:50,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4384, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4629, PETRI_PLACES=232, PETRI_TRANSITIONS=241} [2023-08-27 11:37:50,688 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 164 predicate places. [2023-08-27 11:37:50,688 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 241 transitions, 4629 flow [2023-08-27 11:37:50,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:50,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:50,688 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, 1] [2023-08-27 11:37:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-27 11:37:50,688 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:50,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1045711250, now seen corresponding path program 2 times [2023-08-27 11:37:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705250990] [2023-08-27 11:37:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705250990] [2023-08-27 11:37:50,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705250990] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890227411] [2023-08-27 11:37:50,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:50,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:50,885 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:50,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-27 11:37:51,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:51,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:51,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:51,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:51,089 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:51,090 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 11:37:51,152 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 11:37:51,170 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 11:37:51,217 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 11:37:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:51,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:51,281 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:37:51,281 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 11:37:51,285 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 35 treesize of output 27 [2023-08-27 11:37:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890227411] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:51,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:51,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2023-08-27 11:37:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585822576] [2023-08-27 11:37:51,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:51,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 11:37:51,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 11:37:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-08-27 11:37:51,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 371 [2023-08-27 11:37:51,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 241 transitions, 4629 flow. Second operand has 19 states, 19 states have (on average 127.94736842105263) internal successors, (2431), 19 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:51,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:51,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 371 [2023-08-27 11:37:51,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:51,799 INFO L124 PetriNetUnfolderBase]: 645/1924 cut-off events. [2023-08-27 11:37:51,799 INFO L125 PetriNetUnfolderBase]: For 42064/42072 co-relation queries the response was YES. [2023-08-27 11:37:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13724 conditions, 1924 events. 645/1924 cut-off events. For 42064/42072 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 13719 event pairs, 138 based on Foata normal form. 8/1931 useless extension candidates. Maximal degree in co-relation 13661. Up to 772 conditions per place. [2023-08-27 11:37:51,813 INFO L140 encePairwiseOnDemand]: 357/371 looper letters, 166 selfloop transitions, 81 changer transitions 23/278 dead transitions. [2023-08-27 11:37:51,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 278 transitions, 5634 flow [2023-08-27 11:37:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1329 transitions. [2023-08-27 11:37:51,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3582210242587601 [2023-08-27 11:37:51,814 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1329 transitions. [2023-08-27 11:37:51,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1329 transitions. [2023-08-27 11:37:51,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:51,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1329 transitions. [2023-08-27 11:37:51,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.9) internal successors, (1329), 10 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:51,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:51,817 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:51,817 INFO L175 Difference]: Start difference. First operand has 232 places, 241 transitions, 4629 flow. Second operand 10 states and 1329 transitions. [2023-08-27 11:37:51,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 278 transitions, 5634 flow [2023-08-27 11:37:51,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 278 transitions, 5519 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-27 11:37:51,889 INFO L231 Difference]: Finished difference. Result has 240 places, 222 transitions, 4337 flow [2023-08-27 11:37:51,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4520, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4337, PETRI_PLACES=240, PETRI_TRANSITIONS=222} [2023-08-27 11:37:51,890 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 172 predicate places. [2023-08-27 11:37:51,890 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 222 transitions, 4337 flow [2023-08-27 11:37:51,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 127.94736842105263) internal successors, (2431), 19 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:51,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:51,890 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, 1] [2023-08-27 11:37:51,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-27 11:37:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:52,095 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:52,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2006169024, now seen corresponding path program 1 times [2023-08-27 11:37:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632091976] [2023-08-27 11:37:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:52,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:52,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:52,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632091976] [2023-08-27 11:37:52,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632091976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:52,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:52,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:52,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277752751] [2023-08-27 11:37:52,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:52,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:52,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:52,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:52,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:52,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 371 [2023-08-27 11:37:52,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 222 transitions, 4337 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 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 11:37:52,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:52,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 371 [2023-08-27 11:37:52,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:52,577 INFO L124 PetriNetUnfolderBase]: 545/1643 cut-off events. [2023-08-27 11:37:52,578 INFO L125 PetriNetUnfolderBase]: For 36278/36282 co-relation queries the response was YES. [2023-08-27 11:37:52,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11880 conditions, 1643 events. 545/1643 cut-off events. For 36278/36282 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11382 event pairs, 214 based on Foata normal form. 6/1648 useless extension candidates. Maximal degree in co-relation 11815. Up to 991 conditions per place. [2023-08-27 11:37:52,589 INFO L140 encePairwiseOnDemand]: 358/371 looper letters, 170 selfloop transitions, 69 changer transitions 8/255 dead transitions. [2023-08-27 11:37:52,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 255 transitions, 5234 flow [2023-08-27 11:37:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1425 transitions. [2023-08-27 11:37:52,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38409703504043125 [2023-08-27 11:37:52,590 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1425 transitions. [2023-08-27 11:37:52,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1425 transitions. [2023-08-27 11:37:52,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:52,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1425 transitions. [2023-08-27 11:37:52,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.5) internal successors, (1425), 10 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,593 INFO L175 Difference]: Start difference. First operand has 240 places, 222 transitions, 4337 flow. Second operand 10 states and 1425 transitions. [2023-08-27 11:37:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 255 transitions, 5234 flow [2023-08-27 11:37:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 255 transitions, 4881 flow, removed 20 selfloop flow, removed 14 redundant places. [2023-08-27 11:37:52,653 INFO L231 Difference]: Finished difference. Result has 234 places, 224 transitions, 4246 flow [2023-08-27 11:37:52,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4018, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4246, PETRI_PLACES=234, PETRI_TRANSITIONS=224} [2023-08-27 11:37:52,653 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 166 predicate places. [2023-08-27 11:37:52,653 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 224 transitions, 4246 flow [2023-08-27 11:37:52,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 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 11:37:52,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:52,654 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, 1] [2023-08-27 11:37:52,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-27 11:37:52,654 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:52,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:52,654 INFO L85 PathProgramCache]: Analyzing trace with hash -157857665, now seen corresponding path program 1 times [2023-08-27 11:37:52,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:52,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650522014] [2023-08-27 11:37:52,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:52,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-27 11:37:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650522014] [2023-08-27 11:37:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650522014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:37:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:37:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133713953] [2023-08-27 11:37:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:52,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:37:52,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:52,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:37:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:37:52,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2023-08-27 11:37:52,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 224 transitions, 4246 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:52,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:52,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2023-08-27 11:37:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:53,071 INFO L124 PetriNetUnfolderBase]: 535/1619 cut-off events. [2023-08-27 11:37:53,071 INFO L125 PetriNetUnfolderBase]: For 33585/33589 co-relation queries the response was YES. [2023-08-27 11:37:53,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11475 conditions, 1619 events. 535/1619 cut-off events. For 33585/33589 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11197 event pairs, 225 based on Foata normal form. 6/1624 useless extension candidates. Maximal degree in co-relation 11409. Up to 1012 conditions per place. [2023-08-27 11:37:53,082 INFO L140 encePairwiseOnDemand]: 356/371 looper letters, 159 selfloop transitions, 58 changer transitions 20/245 dead transitions. [2023-08-27 11:37:53,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 245 transitions, 4874 flow [2023-08-27 11:37:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 11:37:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 11:37:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1381 transitions. [2023-08-27 11:37:53,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37223719676549866 [2023-08-27 11:37:53,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1381 transitions. [2023-08-27 11:37:53,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1381 transitions. [2023-08-27 11:37:53,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:53,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1381 transitions. [2023-08-27 11:37:53,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.1) internal successors, (1381), 10 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:53,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 371.0) internal successors, (4081), 11 states have internal predecessors, (4081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:53,086 INFO L175 Difference]: Start difference. First operand has 234 places, 224 transitions, 4246 flow. Second operand 10 states and 1381 transitions. [2023-08-27 11:37:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 245 transitions, 4874 flow [2023-08-27 11:37:53,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 245 transitions, 4657 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-27 11:37:53,146 INFO L231 Difference]: Finished difference. Result has 237 places, 209 transitions, 3807 flow [2023-08-27 11:37:53,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=4017, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3807, PETRI_PLACES=237, PETRI_TRANSITIONS=209} [2023-08-27 11:37:53,147 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 169 predicate places. [2023-08-27 11:37:53,148 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 209 transitions, 3807 flow [2023-08-27 11:37:53,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:53,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:53,148 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, 1] [2023-08-27 11:37:53,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-27 11:37:53,148 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:53,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -820066776, now seen corresponding path program 2 times [2023-08-27 11:37:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561769729] [2023-08-27 11:37:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:53,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561769729] [2023-08-27 11:37:53,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561769729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:53,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063879526] [2023-08-27 11:37:53,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:53,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:53,346 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:53,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-27 11:37:53,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:53,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:53,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:53,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:53,502 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:53,502 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 11:37:53,554 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 11:37:53,573 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 11:37:53,607 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 11:37:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:53,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:37:53,671 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:37:53,671 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 11:37:53,673 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 35 treesize of output 27 [2023-08-27 11:37:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-27 11:37:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063879526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:37:53,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:37:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2023-08-27 11:37:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235382153] [2023-08-27 11:37:53,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:37:53,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 11:37:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 11:37:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=279, Unknown=4, NotChecked=0, Total=342 [2023-08-27 11:37:53,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 371 [2023-08-27 11:37:53,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 209 transitions, 3807 flow. Second operand has 19 states, 19 states have (on average 128.3684210526316) internal successors, (2439), 19 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:53,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:53,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 371 [2023-08-27 11:37:53,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:54,273 INFO L124 PetriNetUnfolderBase]: 519/1555 cut-off events. [2023-08-27 11:37:54,274 INFO L125 PetriNetUnfolderBase]: For 33490/33496 co-relation queries the response was YES. [2023-08-27 11:37:54,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10898 conditions, 1555 events. 519/1555 cut-off events. For 33490/33496 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10539 event pairs, 127 based on Foata normal form. 10/1565 useless extension candidates. Maximal degree in co-relation 10831. Up to 740 conditions per place. [2023-08-27 11:37:54,283 INFO L140 encePairwiseOnDemand]: 356/371 looper letters, 121 selfloop transitions, 53 changer transitions 55/237 dead transitions. [2023-08-27 11:37:54,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 237 transitions, 4530 flow [2023-08-27 11:37:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 11:37:54,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 11:37:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1583 transitions. [2023-08-27 11:37:54,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.355570530098832 [2023-08-27 11:37:54,285 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1583 transitions. [2023-08-27 11:37:54,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1583 transitions. [2023-08-27 11:37:54,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:54,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1583 transitions. [2023-08-27 11:37:54,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:54,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 371.0) internal successors, (4823), 13 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:54,289 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 371.0) internal successors, (4823), 13 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:54,289 INFO L175 Difference]: Start difference. First operand has 237 places, 209 transitions, 3807 flow. Second operand 12 states and 1583 transitions. [2023-08-27 11:37:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 237 transitions, 4530 flow [2023-08-27 11:37:54,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 4182 flow, removed 26 selfloop flow, removed 18 redundant places. [2023-08-27 11:37:54,343 INFO L231 Difference]: Finished difference. Result has 227 places, 160 transitions, 2589 flow [2023-08-27 11:37:54,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3397, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2589, PETRI_PLACES=227, PETRI_TRANSITIONS=160} [2023-08-27 11:37:54,344 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 159 predicate places. [2023-08-27 11:37:54,344 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 160 transitions, 2589 flow [2023-08-27 11:37:54,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 128.3684210526316) internal successors, (2439), 19 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:54,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:54,344 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 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 11:37:54,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-27 11:37:54,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:54,549 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:54,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:54,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1670782932, now seen corresponding path program 2 times [2023-08-27 11:37:54,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:54,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671524258] [2023-08-27 11:37:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:54,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671524258] [2023-08-27 11:37:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671524258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52157778] [2023-08-27 11:37:54,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:54,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:54,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:54,761 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:54,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-27 11:37:54,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:54,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:54,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:54,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:54,942 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:54,942 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 11:37:55,012 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 11:37:55,074 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 11:37:55,103 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 11:37:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:37:55,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:55,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52157778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:55,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:55,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2023-08-27 11:37:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044917210] [2023-08-27 11:37:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:37:55,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:55,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:37:55,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-27 11:37:55,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:55,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 160 transitions, 2589 flow. Second operand has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:55,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:55,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:55,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:55,368 INFO L124 PetriNetUnfolderBase]: 350/1113 cut-off events. [2023-08-27 11:37:55,368 INFO L125 PetriNetUnfolderBase]: For 18912/18916 co-relation queries the response was YES. [2023-08-27 11:37:55,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 1113 events. 350/1113 cut-off events. For 18912/18916 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7283 event pairs, 117 based on Foata normal form. 4/1116 useless extension candidates. Maximal degree in co-relation 6957. Up to 495 conditions per place. [2023-08-27 11:37:55,373 INFO L140 encePairwiseOnDemand]: 359/371 looper letters, 85 selfloop transitions, 29 changer transitions 55/177 dead transitions. [2023-08-27 11:37:55,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 177 transitions, 3015 flow [2023-08-27 11:37:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:37:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:37:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1205 transitions. [2023-08-27 11:37:55,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608864929619647 [2023-08-27 11:37:55,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1205 transitions. [2023-08-27 11:37:55,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1205 transitions. [2023-08-27 11:37:55,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:55,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1205 transitions. [2023-08-27 11:37:55,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:55,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:55,377 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:55,377 INFO L175 Difference]: Start difference. First operand has 227 places, 160 transitions, 2589 flow. Second operand 9 states and 1205 transitions. [2023-08-27 11:37:55,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 177 transitions, 3015 flow [2023-08-27 11:37:55,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 177 transitions, 2633 flow, removed 15 selfloop flow, removed 31 redundant places. [2023-08-27 11:37:55,403 INFO L231 Difference]: Finished difference. Result has 196 places, 110 transitions, 1514 flow [2023-08-27 11:37:55,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1514, PETRI_PLACES=196, PETRI_TRANSITIONS=110} [2023-08-27 11:37:55,404 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 128 predicate places. [2023-08-27 11:37:55,404 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 110 transitions, 1514 flow [2023-08-27 11:37:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:55,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:55,404 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 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 11:37:55,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-27 11:37:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2023-08-27 11:37:55,608 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 11:37:55,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash -461364732, now seen corresponding path program 2 times [2023-08-27 11:37:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108848937] [2023-08-27 11:37:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:37:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:37:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:37:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108848937] [2023-08-27 11:37:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108848937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:37:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833049953] [2023-08-27 11:37:55,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:37:55,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:37:55,791 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 11:37:55,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-27 11:37:55,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:37:55,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:37:55,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-27 11:37:55,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:37:55,954 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 11:37:55,954 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 11:37:56,016 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 11:37:56,078 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 11:37:56,106 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 11:37:56,119 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 11:37:56,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:37:56,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833049953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:37:56,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:37:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 15 [2023-08-27 11:37:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632465088] [2023-08-27 11:37:56,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:37:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:37:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:37:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:37:56,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-27 11:37:56,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 371 [2023-08-27 11:37:56,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 110 transitions, 1514 flow. Second operand has 8 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:56,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:37:56,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 371 [2023-08-27 11:37:56,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:37:56,279 INFO L124 PetriNetUnfolderBase]: 237/732 cut-off events. [2023-08-27 11:37:56,279 INFO L125 PetriNetUnfolderBase]: For 10763/10763 co-relation queries the response was YES. [2023-08-27 11:37:56,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 732 events. 237/732 cut-off events. For 10763/10763 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4125 event pairs, 91 based on Foata normal form. 4/735 useless extension candidates. Maximal degree in co-relation 4226. Up to 327 conditions per place. [2023-08-27 11:37:56,282 INFO L140 encePairwiseOnDemand]: 360/371 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2023-08-27 11:37:56,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 122 transitions, 1781 flow [2023-08-27 11:37:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:37:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:37:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1064 transitions. [2023-08-27 11:37:56,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3584905660377358 [2023-08-27 11:37:56,283 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1064 transitions. [2023-08-27 11:37:56,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1064 transitions. [2023-08-27 11:37:56,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:37:56,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1064 transitions. [2023-08-27 11:37:56,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:56,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:56,285 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:56,285 INFO L175 Difference]: Start difference. First operand has 196 places, 110 transitions, 1514 flow. Second operand 8 states and 1064 transitions. [2023-08-27 11:37:56,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 122 transitions, 1781 flow [2023-08-27 11:37:56,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 122 transitions, 1274 flow, removed 11 selfloop flow, removed 43 redundant places. [2023-08-27 11:37:56,296 INFO L231 Difference]: Finished difference. Result has 136 places, 0 transitions, 0 flow [2023-08-27 11:37:56,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=136, PETRI_TRANSITIONS=0} [2023-08-27 11:37:56,297 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 68 predicate places. [2023-08-27 11:37:56,297 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 0 transitions, 0 flow [2023-08-27 11:37:56,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 11:37:56,297 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 11:37:56,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 11:37:56,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-08-27 11:37:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:37:56,502 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:37:56,503 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:37:56,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,520 INFO L124 PetriNetUnfolderBase]: 38/325 cut-off events. [2023-08-27 11:37:56,520 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:37:56,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 325 events. 38/325 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1064 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-27 11:37:56,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,522 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:37:56,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,522 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 199 transitions, 419 flow [2023-08-27 11:37:56,539 INFO L124 PetriNetUnfolderBase]: 38/325 cut-off events. [2023-08-27 11:37:56,539 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:37:56,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 325 events. 38/325 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1064 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 243. Up to 8 conditions per place. [2023-08-27 11:37:56,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-08-27 11:37:59,188 INFO L134 LiptonReduction]: Checked pairs total: 47486 [2023-08-27 11:37:59,188 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-27 11:37:59,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:37:59,189 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:37:59,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:37:59,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:37:59,194 INFO L124 PetriNetUnfolderBase]: 18/92 cut-off events. [2023-08-27 11:37:59,194 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 11:37:59,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:37:59,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 11:37:59,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:37:59,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:37:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1764442810, now seen corresponding path program 1 times [2023-08-27 11:37:59,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:37:59,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900091788] [2023-08-27 11:37:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:37:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:37:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:37:59,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:37:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:37:59,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:37:59,227 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:37:59,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:37:59,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-27 11:37:59,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:37:59,229 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:37:59,229 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:37:59,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 11:37:59,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 11:37:59,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,274 INFO L124 PetriNetUnfolderBase]: 49/411 cut-off events. [2023-08-27 11:37:59,274 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:37:59,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 411 events. 49/411 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1404 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 333. Up to 10 conditions per place. [2023-08-27 11:37:59,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:37:59,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 240 transitions, 512 flow [2023-08-27 11:37:59,305 INFO L124 PetriNetUnfolderBase]: 49/411 cut-off events. [2023-08-27 11:37:59,305 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 11:37:59,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 411 events. 49/411 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1404 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 333. Up to 10 conditions per place. [2023-08-27 11:37:59,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 34400 [2023-08-27 11:38:02,147 INFO L134 LiptonReduction]: Checked pairs total: 88735 [2023-08-27 11:38:02,147 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-27 11:38:02,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:38:02,151 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;@411e07a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:38:02,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-27 11:38:02,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:38:02,153 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-08-27 11:38:02,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:38:02,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:38:02,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:38:02,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 20 more)] === [2023-08-27 11:38:02,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:38:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 65669053, now seen corresponding path program 1 times [2023-08-27 11:38:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:38:02,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466007079] [2023-08-27 11:38:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:38:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:38:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:38:02,165 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 11:38:02,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:38:02,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466007079] [2023-08-27 11:38:02,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466007079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:38:02,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:38:02,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:38:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708310141] [2023-08-27 11:38:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:38:02,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:38:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:38:02,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:38:02,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:38:02,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 442 [2023-08-27 11:38:02,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:38:02,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:38:02,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 442 [2023-08-27 11:38:02,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand