/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_79-equ_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:56:40,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:56:40,129 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 11:56:40,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:56:40,135 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:56:40,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:56:40,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:56:40,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:56:40,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:56:40,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:56:40,173 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:56:40,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:56:40,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:56:40,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:56:40,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:56:40,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:56:40,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:56:40,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:56:40,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:56:40,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:56:40,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:56:40,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:56:40,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:56:40,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:56:40,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:56:40,179 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:56:40,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:56:40,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:56:40,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:56:40,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:56:40,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:56:40,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:56:40,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:56:40,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:56:40,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:56:40,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:56:40,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:56:40,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:56:40,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:56:40,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:56:40,518 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:56:40,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-27 11:56:41,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:56:42,139 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:56:42,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_79-equ_racefree.i [2023-08-27 11:56:42,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2af80c1/478b1ae01f294a35a6635c425102a1b5/FLAG3bc6a9b96 [2023-08-27 11:56:42,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2af80c1/478b1ae01f294a35a6635c425102a1b5 [2023-08-27 11:56:42,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:56:42,178 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:56:42,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:56:42,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:56:42,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:56:42,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c0f8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42, skipping insertion in model container [2023-08-27 11:56:42,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,234 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:56:42,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:56:42,677 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:56:42,712 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:56:42,714 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 11:56:42,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:56:42,817 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:56:42,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42 WrapperNode [2023-08-27 11:56:42,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:56:42,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:56:42,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:56:42,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:56:42,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,898 INFO L138 Inliner]: procedures = 271, calls = 57, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 228 [2023-08-27 11:56:42,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:56:42,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:56:42,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:56:42,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:56:42,908 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:56:42,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:56:42,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:56:42,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:56:42,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (1/1) ... [2023-08-27 11:56:42,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:56:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:56:42,990 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 11:56:43,021 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 11:56:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:56:43,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:56:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:56:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:56:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:56:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:56:43,034 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:56:43,035 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:56:43,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:56:43,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:56:43,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:56:43,037 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 11:56:43,201 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:56:43,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:56:43,552 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:56:43,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:56:43,561 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-27 11:56:43,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:56:43 BoogieIcfgContainer [2023-08-27 11:56:43,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:56:43,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:56:43,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:56:43,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:56:43,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:56:42" (1/3) ... [2023-08-27 11:56:43,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a8adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:56:43, skipping insertion in model container [2023-08-27 11:56:43,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:56:42" (2/3) ... [2023-08-27 11:56:43,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732a8adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:56:43, skipping insertion in model container [2023-08-27 11:56:43,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:56:43" (3/3) ... [2023-08-27 11:56:43,571 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_79-equ_racefree.i [2023-08-27 11:56:43,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:56:43,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-27 11:56:43,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:56:43,680 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:56:43,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 11:56:43,812 INFO L124 PetriNetUnfolderBase]: 46/327 cut-off events. [2023-08-27 11:56:43,812 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:56:43,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 327 events. 46/327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1093 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 11:56:43,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 11:56:43,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 238 transitions, 484 flow [2023-08-27 11:56:43,829 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:56:43,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 238 transitions, 484 flow [2023-08-27 11:56:43,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 238 transitions, 484 flow [2023-08-27 11:56:43,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 238 transitions, 484 flow [2023-08-27 11:56:43,887 INFO L124 PetriNetUnfolderBase]: 44/322 cut-off events. [2023-08-27 11:56:43,888 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:56:43,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 322 events. 44/322 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1109 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 11:56:43,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 12972 [2023-08-27 11:56:52,159 INFO L134 LiptonReduction]: Checked pairs total: 32633 [2023-08-27 11:56:52,159 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-27 11:56:52,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:56:52,181 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;@125df31c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:56:52,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-27 11:56:52,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:56:52,183 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 11:56:52,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:56:52,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:52,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 11:56:52,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:52,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash 951, now seen corresponding path program 1 times [2023-08-27 11:56:52,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:52,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894092774] [2023-08-27 11:56:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:52,298 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 11:56:52,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:52,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894092774] [2023-08-27 11:56:52,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894092774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:52,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:52,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 11:56:52,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452654959] [2023-08-27 11:56:52,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 11:56:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 11:56:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 11:56:52,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 494 [2023-08-27 11:56:52,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:52,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 494 [2023-08-27 11:56:52,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:52,553 INFO L124 PetriNetUnfolderBase]: 494/1065 cut-off events. [2023-08-27 11:56:52,553 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:56:52,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1065 events. 494/1065 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5865 event pairs, 450 based on Foata normal form. 118/865 useless extension candidates. Maximal degree in co-relation 1978. Up to 971 conditions per place. [2023-08-27 11:56:52,562 INFO L140 encePairwiseOnDemand]: 467/494 looper letters, 48 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-27 11:56:52,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 214 flow [2023-08-27 11:56:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 11:56:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 11:56:52,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2023-08-27 11:56:52,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507085020242915 [2023-08-27 11:56:52,576 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2023-08-27 11:56:52,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2023-08-27 11:56:52,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:52,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2023-08-27 11:56:52,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,590 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 494.0) internal successors, (1482), 3 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,592 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 172 flow. Second operand 2 states and 501 transitions. [2023-08-27 11:56:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 214 flow [2023-08-27 11:56:52,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:56:52,598 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 118 flow [2023-08-27 11:56:52,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-27 11:56:52,602 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2023-08-27 11:56:52,603 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 118 flow [2023-08-27 11:56:52,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:52,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:56:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:56:52,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:52,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:52,604 INFO L85 PathProgramCache]: Analyzing trace with hash 29408273, now seen corresponding path program 1 times [2023-08-27 11:56:52,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942926327] [2023-08-27 11:56:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:52,789 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 11:56:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942926327] [2023-08-27 11:56:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942926327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:56:52,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258635616] [2023-08-27 11:56:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:56:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:56:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:56:52,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 494 [2023-08-27 11:56:52,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:52,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 494 [2023-08-27 11:56:52,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:52,962 INFO L124 PetriNetUnfolderBase]: 475/994 cut-off events. [2023-08-27 11:56:52,962 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:56:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 994 events. 475/994 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5478 event pairs, 236 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 1911. Up to 818 conditions per place. [2023-08-27 11:56:52,969 INFO L140 encePairwiseOnDemand]: 489/494 looper letters, 63 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-27 11:56:52,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 286 flow [2023-08-27 11:56:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:56:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:56:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-08-27 11:56:52,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.460863697705803 [2023-08-27 11:56:52,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-08-27 11:56:52,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-08-27 11:56:52,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:52,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-08-27 11:56:52,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,984 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 118 flow. Second operand 3 states and 683 transitions. [2023-08-27 11:56:52,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 286 flow [2023-08-27 11:56:52,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:56:52,987 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 134 flow [2023-08-27 11:56:52,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-27 11:56:52,988 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2023-08-27 11:56:52,989 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 134 flow [2023-08-27 11:56:52,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:52,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:52,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:56:52,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:56:52,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:52,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash 29408237, now seen corresponding path program 1 times [2023-08-27 11:56:52,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:52,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398488425] [2023-08-27 11:56:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:53,123 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 11:56:53,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:53,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398488425] [2023-08-27 11:56:53,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398488425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:53,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:53,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:56:53,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487827730] [2023-08-27 11:56:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:53,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:56:53,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:56:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:56:53,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 494 [2023-08-27 11:56:53,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:53,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 494 [2023-08-27 11:56:53,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:53,267 INFO L124 PetriNetUnfolderBase]: 456/959 cut-off events. [2023-08-27 11:56:53,267 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-27 11:56:53,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 959 events. 456/959 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5265 event pairs, 220 based on Foata normal form. 19/742 useless extension candidates. Maximal degree in co-relation 1944. Up to 855 conditions per place. [2023-08-27 11:56:53,273 INFO L140 encePairwiseOnDemand]: 491/494 looper letters, 63 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-08-27 11:56:53,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 298 flow [2023-08-27 11:56:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:56:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:56:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 681 transitions. [2023-08-27 11:56:53,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45951417004048584 [2023-08-27 11:56:53,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 681 transitions. [2023-08-27 11:56:53,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 681 transitions. [2023-08-27 11:56:53,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:53,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 681 transitions. [2023-08-27 11:56:53,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,282 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 134 flow. Second operand 3 states and 681 transitions. [2023-08-27 11:56:53,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 298 flow [2023-08-27 11:56:53,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:56:53,285 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 130 flow [2023-08-27 11:56:53,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-27 11:56:53,286 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2023-08-27 11:56:53,286 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 130 flow [2023-08-27 11:56:53,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:53,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:53,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:56:53,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:53,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash -71384128, now seen corresponding path program 1 times [2023-08-27 11:56:53,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:53,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518893326] [2023-08-27 11:56:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:53,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:53,556 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 11:56:53,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:53,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518893326] [2023-08-27 11:56:53,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518893326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:53,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:53,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:56:53,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273482889] [2023-08-27 11:56:53,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:56:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:53,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:56:53,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:56:53,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 494 [2023-08-27 11:56:53,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:53,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 494 [2023-08-27 11:56:53,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:53,770 INFO L124 PetriNetUnfolderBase]: 464/1029 cut-off events. [2023-08-27 11:56:53,770 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-27 11:56:53,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 1029 events. 464/1029 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5858 event pairs, 210 based on Foata normal form. 0/783 useless extension candidates. Maximal degree in co-relation 2077. Up to 610 conditions per place. [2023-08-27 11:56:53,775 INFO L140 encePairwiseOnDemand]: 486/494 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-08-27 11:56:53,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 412 flow [2023-08-27 11:56:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:56:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:56:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2023-08-27 11:56:53,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38917004048583 [2023-08-27 11:56:53,778 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2023-08-27 11:56:53,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2023-08-27 11:56:53,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:53,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2023-08-27 11:56:53,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,785 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,785 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 130 flow. Second operand 4 states and 769 transitions. [2023-08-27 11:56:53,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 412 flow [2023-08-27 11:56:53,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:56:53,788 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 168 flow [2023-08-27 11:56:53,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-27 11:56:53,789 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 2 predicate places. [2023-08-27 11:56:53,789 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 168 flow [2023-08-27 11:56:53,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:53,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:53,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:53,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:56:53,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:53,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2106422623, now seen corresponding path program 1 times [2023-08-27 11:56:53,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:53,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780891901] [2023-08-27 11:56:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:53,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:53,842 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 11:56:53,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:53,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780891901] [2023-08-27 11:56:53,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780891901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:56:53,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337891378] [2023-08-27 11:56:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:53,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:56:53,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:56:53,846 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 11:56:53,856 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 11:56:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:53,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:56:53,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:56:54,510 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 11:56:54,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:56:54,526 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 11:56:54,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337891378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:56:54,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:56:54,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 11:56:54,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904538190] [2023-08-27 11:56:54,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:56:54,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:56:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:56:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:56:54,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 494 [2023-08-27 11:56:54,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 207.16666666666666) internal successors, (1243), 6 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:54,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:54,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 494 [2023-08-27 11:56:54,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:54,582 INFO L124 PetriNetUnfolderBase]: 32/106 cut-off events. [2023-08-27 11:56:54,582 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-27 11:56:54,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 106 events. 32/106 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 383 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 257. Up to 66 conditions per place. [2023-08-27 11:56:54,583 INFO L140 encePairwiseOnDemand]: 491/494 looper letters, 17 selfloop transitions, 2 changer transitions 17/40 dead transitions. [2023-08-27 11:56:54,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 179 flow [2023-08-27 11:56:54,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:56:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:56:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 856 transitions. [2023-08-27 11:56:54,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331983805668016 [2023-08-27 11:56:54,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 856 transitions. [2023-08-27 11:56:54,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 856 transitions. [2023-08-27 11:56:54,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:54,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 856 transitions. [2023-08-27 11:56:54,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:54,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:54,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 494.0) internal successors, (2470), 5 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:54,593 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 168 flow. Second operand 4 states and 856 transitions. [2023-08-27 11:56:54,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 179 flow [2023-08-27 11:56:54,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 163 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 11:56:54,596 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 49 flow [2023-08-27 11:56:54,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-27 11:56:54,599 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -28 predicate places. [2023-08-27 11:56:54,599 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 49 flow [2023-08-27 11:56:54,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.16666666666666) internal successors, (1243), 6 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:54,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:54,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:54,611 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 11:56:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:56:54,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:54,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1491057316, now seen corresponding path program 1 times [2023-08-27 11:56:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993448109] [2023-08-27 11:56:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:55,064 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 11:56:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993448109] [2023-08-27 11:56:55,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993448109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:55,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:55,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:56:55,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159671685] [2023-08-27 11:56:55,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:56:55,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:55,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:56:55,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:56:55,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 494 [2023-08-27 11:56:55,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 49 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:55,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 494 [2023-08-27 11:56:55,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:55,122 INFO L124 PetriNetUnfolderBase]: 13/54 cut-off events. [2023-08-27 11:56:55,122 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-27 11:56:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 54 events. 13/54 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 6 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 131. Up to 20 conditions per place. [2023-08-27 11:56:55,123 INFO L140 encePairwiseOnDemand]: 487/494 looper letters, 13 selfloop transitions, 8 changer transitions 0/24 dead transitions. [2023-08-27 11:56:55,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 125 flow [2023-08-27 11:56:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:56:55,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:56:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-08-27 11:56:55,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3441295546558704 [2023-08-27 11:56:55,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-08-27 11:56:55,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-08-27 11:56:55,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:55,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-08-27 11:56:55,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 494.0) internal successors, (3952), 8 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 11:56:55,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 494.0) internal successors, (3952), 8 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 11:56:55,136 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 49 flow. Second operand 7 states and 1190 transitions. [2023-08-27 11:56:55,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 125 flow [2023-08-27 11:56:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:56:55,138 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 92 flow [2023-08-27 11:56:55,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=92, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-27 11:56:55,140 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -29 predicate places. [2023-08-27 11:56:55,140 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 92 flow [2023-08-27 11:56:55,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:55,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:55,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:56:55,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:55,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:55,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1491057366, now seen corresponding path program 1 times [2023-08-27 11:56:55,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:55,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819427225] [2023-08-27 11:56:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:55,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:55,230 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 11:56:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819427225] [2023-08-27 11:56:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819427225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:55,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:56:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805726779] [2023-08-27 11:56:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:56:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:56:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:56:55,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 494 [2023-08-27 11:56:55,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:55,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 494 [2023-08-27 11:56:55,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:55,259 INFO L124 PetriNetUnfolderBase]: 11/49 cut-off events. [2023-08-27 11:56:55,260 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-27 11:56:55,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 49 events. 11/49 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 8 based on Foata normal form. 3/51 useless extension candidates. Maximal degree in co-relation 150. Up to 29 conditions per place. [2023-08-27 11:56:55,260 INFO L140 encePairwiseOnDemand]: 489/494 looper letters, 10 selfloop transitions, 6 changer transitions 1/20 dead transitions. [2023-08-27 11:56:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 127 flow [2023-08-27 11:56:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:56:55,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:56:55,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-27 11:56:55,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3609986504723347 [2023-08-27 11:56:55,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-27 11:56:55,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-27 11:56:55,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:55,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-27 11:56:55,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,267 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 92 flow. Second operand 3 states and 535 transitions. [2023-08-27 11:56:55,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 127 flow [2023-08-27 11:56:55,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 11:56:55,270 INFO L231 Difference]: Finished difference. Result has 30 places, 18 transitions, 81 flow [2023-08-27 11:56:55,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2023-08-27 11:56:55,271 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -31 predicate places. [2023-08-27 11:56:55,271 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 81 flow [2023-08-27 11:56:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:55,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:55,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:56:55,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:55,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:55,272 INFO L85 PathProgramCache]: Analyzing trace with hash -420211439, now seen corresponding path program 1 times [2023-08-27 11:56:55,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:55,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423888553] [2023-08-27 11:56:55,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:55,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:55,467 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 11:56:55,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:55,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423888553] [2023-08-27 11:56:55,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423888553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:56:55,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:56:55,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:56:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525415496] [2023-08-27 11:56:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:56:55,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:56:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:56:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:56:55,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 494 [2023-08-27 11:56:55,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:55,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 494 [2023-08-27 11:56:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:55,490 INFO L124 PetriNetUnfolderBase]: 7/32 cut-off events. [2023-08-27 11:56:55,490 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 11:56:55,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 32 events. 7/32 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 6 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 97. Up to 26 conditions per place. [2023-08-27 11:56:55,491 INFO L140 encePairwiseOnDemand]: 492/494 looper letters, 13 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-27 11:56:55,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 17 transitions, 104 flow [2023-08-27 11:56:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:56:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:56:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-27 11:56:55,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35020242914979755 [2023-08-27 11:56:55,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-27 11:56:55,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-27 11:56:55,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:55,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-27 11:56:55,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 494.0) internal successors, (1976), 4 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,499 INFO L175 Difference]: Start difference. First operand has 30 places, 18 transitions, 81 flow. Second operand 3 states and 519 transitions. [2023-08-27 11:56:55,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 17 transitions, 104 flow [2023-08-27 11:56:55,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 94 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:56:55,500 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 68 flow [2023-08-27 11:56:55,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-27 11:56:55,502 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -33 predicate places. [2023-08-27 11:56:55,502 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 68 flow [2023-08-27 11:56:55,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:55,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:56:55,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:55,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:56:55,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2023-08-27 11:56:55,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:56:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash -420211489, now seen corresponding path program 1 times [2023-08-27 11:56:55,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:56:55,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234910011] [2023-08-27 11:56:55,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:55,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:56:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:55,779 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 11:56:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:56:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234910011] [2023-08-27 11:56:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234910011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:56:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539304923] [2023-08-27 11:56:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:56:55,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:56:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:56:55,782 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 11:56:55,813 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 11:56:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:56:55,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 11:56:55,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:56:56,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:56,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:56,212 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-27 11:56:56,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-27 11:56:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:56,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:56,301 INFO L322 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-27 11:56:56,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-27 11:56:56,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:56,475 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 11:56:57,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-27 11:56:57,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:56:57,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 11:56:57,861 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 11:56:57,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:56:57,928 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_178 (+ |c_t_funThread1of1ForFork0_#t~mem6#1| 1)))) is different from false [2023-08-27 11:56:57,939 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< v_ArrVal_178 (+ (select .cse0 |c_~#A~0.offset|) 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648))))) is different from false [2023-08-27 11:56:57,991 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (v_ArrVal_178 Int) (v_ArrVal_177 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_177))) (let ((.cse1 (select .cse0 |c_~#A~0.base|))) (or (< 0 (+ 2147483648 (select (select (store (store .cse0 |c_~#A~0.base| (store .cse1 |c_~#A~0.offset| v_ArrVal_178)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_180) |c_~#A~0.base|) |c_~#A~0.offset|))) (< v_ArrVal_178 (+ (select .cse1 |c_~#A~0.offset|) 1)))))) is different from false [2023-08-27 11:56:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 11:56:57,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539304923] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:56:57,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:56:57,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-27 11:56:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591858247] [2023-08-27 11:56:57,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:56:57,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 11:56:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:56:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 11:56:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=93, Unknown=3, NotChecked=66, Total=210 [2023-08-27 11:56:57,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 494 [2023-08-27 11:56:58,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 68 flow. Second operand has 15 states, 15 states have (on average 169.4) internal successors, (2541), 15 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:58,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:56:58,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 494 [2023-08-27 11:56:58,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:56:58,397 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2023-08-27 11:56:58,397 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:56:58,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 31 events. 7/31 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 3 based on Foata normal form. 1/32 useless extension candidates. Maximal degree in co-relation 88. Up to 13 conditions per place. [2023-08-27 11:56:58,397 INFO L140 encePairwiseOnDemand]: 489/494 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-27 11:56:58,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 111 flow [2023-08-27 11:56:58,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:56:58,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:56:58,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1018 transitions. [2023-08-27 11:56:58,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434547908232119 [2023-08-27 11:56:58,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1018 transitions. [2023-08-27 11:56:58,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1018 transitions. [2023-08-27 11:56:58,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:56:58,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1018 transitions. [2023-08-27 11:56:58,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 169.66666666666666) internal successors, (1018), 6 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:58,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 494.0) internal successors, (3458), 7 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:58,407 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 494.0) internal successors, (3458), 7 states have internal predecessors, (3458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:58,407 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 68 flow. Second operand 6 states and 1018 transitions. [2023-08-27 11:56:58,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 111 flow [2023-08-27 11:56:58,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:56:58,408 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-27 11:56:58,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=494, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-27 11:56:58,409 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -31 predicate places. [2023-08-27 11:56:58,409 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-27 11:56:58,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 169.4) internal successors, (2541), 15 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:56:58,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2023-08-27 11:56:58,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2023-08-27 11:56:58,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONASSERT (14 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2023-08-27 11:56:58,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (4 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (3 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2023-08-27 11:56:58,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2023-08-27 11:56:58,422 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 11:56:58,619 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,SelfDestructingSolverStorable8 [2023-08-27 11:56:58,620 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:56:58,621 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:56:58,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 11:56:58,651 INFO L124 PetriNetUnfolderBase]: 46/327 cut-off events. [2023-08-27 11:56:58,652 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:56:58,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 327 events. 46/327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1093 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 11:56:58,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 243 transitions, 494 flow [2023-08-27 11:56:58,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 228 transitions, 461 flow [2023-08-27 11:56:58,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:56:58,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 228 transitions, 461 flow [2023-08-27 11:56:58,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 228 transitions, 461 flow [2023-08-27 11:56:58,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 228 transitions, 461 flow [2023-08-27 11:56:58,704 INFO L124 PetriNetUnfolderBase]: 44/312 cut-off events. [2023-08-27 11:56:58,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:56:58,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 312 events. 44/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1049 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-27 11:56:58,710 INFO L119 LiptonReduction]: Number of co-enabled transitions 12972 [2023-08-27 11:57:04,162 INFO L134 LiptonReduction]: Checked pairs total: 26181 [2023-08-27 11:57:04,162 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-27 11:57:04,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:57:04,164 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;@125df31c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:04,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:57:04,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:04,167 INFO L124 PetriNetUnfolderBase]: 10/42 cut-off events. [2023-08-27 11:57:04,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:04,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:04,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 11:57:04,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:57:04,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 259405575, now seen corresponding path program 1 times [2023-08-27 11:57:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423533073] [2023-08-27 11:57:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:04,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:57:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:04,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:57:04,202 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:57:04,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:57:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 11:57:04,202 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:57:04,203 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:57:04,203 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:57:04,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 11:57:04,223 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 11:57:04,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 11:57:04,276 INFO L124 PetriNetUnfolderBase]: 77/519 cut-off events. [2023-08-27 11:57:04,276 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:57:04,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 519 events. 77/519 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2096 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 329. Up to 12 conditions per place. [2023-08-27 11:57:04,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 11:57:04,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 312 transitions, 642 flow [2023-08-27 11:57:04,284 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:04,284 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 312 transitions, 642 flow [2023-08-27 11:57:04,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 312 transitions, 642 flow [2023-08-27 11:57:04,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 312 transitions, 642 flow [2023-08-27 11:57:04,334 INFO L124 PetriNetUnfolderBase]: 76/517 cut-off events. [2023-08-27 11:57:04,334 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:57:04,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 517 events. 76/517 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2111 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 327. Up to 12 conditions per place. [2023-08-27 11:57:04,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 38088 [2023-08-27 11:57:10,361 INFO L134 LiptonReduction]: Checked pairs total: 82126 [2023-08-27 11:57:10,361 INFO L136 LiptonReduction]: Total number of compositions: 295 [2023-08-27 11:57:10,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:57:10,363 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;@125df31c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:10,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-27 11:57:10,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:10,363 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 11:57:10,363 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:10,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:10,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 11:57:10,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:10,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1852, now seen corresponding path program 1 times [2023-08-27 11:57:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937308798] [2023-08-27 11:57:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:10,369 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 11:57:10,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:10,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937308798] [2023-08-27 11:57:10,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937308798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:10,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:10,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 11:57:10,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350353145] [2023-08-27 11:57:10,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 11:57:10,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:10,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 11:57:10,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 11:57:10,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 609 [2023-08-27 11:57:10,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 118 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:10,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:10,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 609 [2023-08-27 11:57:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:12,792 INFO L124 PetriNetUnfolderBase]: 21989/34086 cut-off events. [2023-08-27 11:57:12,792 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2023-08-27 11:57:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66584 conditions, 34086 events. 21989/34086 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 250545 event pairs, 20805 based on Foata normal form. 4188/27153 useless extension candidates. Maximal degree in co-relation 28114. Up to 32375 conditions per place. [2023-08-27 11:57:13,004 INFO L140 encePairwiseOnDemand]: 574/609 looper letters, 72 selfloop transitions, 0 changer transitions 0/83 dead transitions. [2023-08-27 11:57:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 328 flow [2023-08-27 11:57:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 11:57:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 11:57:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 645 transitions. [2023-08-27 11:57:13,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295566502463054 [2023-08-27 11:57:13,007 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 645 transitions. [2023-08-27 11:57:13,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 645 transitions. [2023-08-27 11:57:13,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:13,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 645 transitions. [2023-08-27 11:57:13,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 322.5) internal successors, (645), 2 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:13,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:13,012 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 609.0) internal successors, (1827), 3 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:13,012 INFO L175 Difference]: Start difference. First operand has 87 places, 118 transitions, 254 flow. Second operand 2 states and 645 transitions. [2023-08-27 11:57:13,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 328 flow [2023-08-27 11:57:13,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 328 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:57:13,014 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 184 flow [2023-08-27 11:57:13,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=184, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2023-08-27 11:57:13,015 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2023-08-27 11:57:13,016 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 184 flow [2023-08-27 11:57:13,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 269.5) internal successors, (539), 2 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:13,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:13,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:57:13,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 11:57:13,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:13,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1764927662, now seen corresponding path program 1 times [2023-08-27 11:57:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973388452] [2023-08-27 11:57:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:13,046 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 11:57:13,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:13,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973388452] [2023-08-27 11:57:13,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973388452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:13,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:57:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381946332] [2023-08-27 11:57:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:13,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 609 [2023-08-27 11:57:13,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:13,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:13,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 609 [2023-08-27 11:57:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:14,971 INFO L124 PetriNetUnfolderBase]: 20569/32243 cut-off events. [2023-08-27 11:57:14,972 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 11:57:15,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63527 conditions, 32243 events. 20569/32243 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 249461 event pairs, 1938 based on Foata normal form. 0/21902 useless extension candidates. Maximal degree in co-relation 63522. Up to 27956 conditions per place. [2023-08-27 11:57:15,132 INFO L140 encePairwiseOnDemand]: 604/609 looper letters, 107 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2023-08-27 11:57:15,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 121 transitions, 480 flow [2023-08-27 11:57:15,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:57:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:57:15,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-27 11:57:15,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48987411056376573 [2023-08-27 11:57:15,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-27 11:57:15,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-27 11:57:15,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:15,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-27 11:57:15,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:15,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:15,141 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:15,141 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 184 flow. Second operand 3 states and 895 transitions. [2023-08-27 11:57:15,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 121 transitions, 480 flow [2023-08-27 11:57:15,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 121 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:57:15,146 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 200 flow [2023-08-27 11:57:15,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2023-08-27 11:57:15,146 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 0 predicate places. [2023-08-27 11:57:15,147 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 200 flow [2023-08-27 11:57:15,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:15,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:15,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:57:15,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 11:57:15,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:15,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1764927569, now seen corresponding path program 1 times [2023-08-27 11:57:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107001023] [2023-08-27 11:57:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:15,185 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 11:57:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:15,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107001023] [2023-08-27 11:57:15,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107001023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:15,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:15,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:57:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892326193] [2023-08-27 11:57:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:15,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 609 [2023-08-27 11:57:15,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:15,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:15,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 609 [2023-08-27 11:57:15,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:16,904 INFO L124 PetriNetUnfolderBase]: 20869/32521 cut-off events. [2023-08-27 11:57:16,905 INFO L125 PetriNetUnfolderBase]: For 2888/2888 co-relation queries the response was YES. [2023-08-27 11:57:16,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65891 conditions, 32521 events. 20869/32521 cut-off events. For 2888/2888 co-relation queries the response was YES. Maximal size of possible extension queue 1185. Compared 239088 event pairs, 9614 based on Foata normal form. 19/22892 useless extension candidates. Maximal degree in co-relation 65884. Up to 31095 conditions per place. [2023-08-27 11:57:17,074 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 90 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-27 11:57:17,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 103 transitions, 428 flow [2023-08-27 11:57:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:57:17,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:57:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-27 11:57:17,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794745484400657 [2023-08-27 11:57:17,077 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-27 11:57:17,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-27 11:57:17,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:17,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-27 11:57:17,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:17,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:17,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:17,094 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 200 flow. Second operand 3 states and 876 transitions. [2023-08-27 11:57:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 103 transitions, 428 flow [2023-08-27 11:57:17,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 103 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:57:17,098 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 208 flow [2023-08-27 11:57:17,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-27 11:57:17,098 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-27 11:57:17,098 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 208 flow [2023-08-27 11:57:17,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:17,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:17,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:17,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 11:57:17,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:17,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash -405489323, now seen corresponding path program 1 times [2023-08-27 11:57:17,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:17,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31145169] [2023-08-27 11:57:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:17,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31145169] [2023-08-27 11:57:17,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31145169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:17,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:17,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:57:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757667864] [2023-08-27 11:57:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:17,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:57:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:57:17,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:57:17,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 609 [2023-08-27 11:57:17,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:17,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:17,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 609 [2023-08-27 11:57:17,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:19,064 INFO L124 PetriNetUnfolderBase]: 23072/36799 cut-off events. [2023-08-27 11:57:19,064 INFO L125 PetriNetUnfolderBase]: For 2325/2325 co-relation queries the response was YES. [2023-08-27 11:57:19,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74702 conditions, 36799 events. 23072/36799 cut-off events. For 2325/2325 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 284629 event pairs, 8099 based on Foata normal form. 0/27129 useless extension candidates. Maximal degree in co-relation 74694. Up to 25806 conditions per place. [2023-08-27 11:57:19,214 INFO L140 encePairwiseOnDemand]: 588/609 looper letters, 160 selfloop transitions, 14 changer transitions 0/185 dead transitions. [2023-08-27 11:57:19,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 185 transitions, 800 flow [2023-08-27 11:57:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:57:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:57:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1059 transitions. [2023-08-27 11:57:19,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43472906403940886 [2023-08-27 11:57:19,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1059 transitions. [2023-08-27 11:57:19,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1059 transitions. [2023-08-27 11:57:19,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:19,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1059 transitions. [2023-08-27 11:57:19,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 264.75) internal successors, (1059), 4 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 11:57:19,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:19,223 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:19,223 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 208 flow. Second operand 4 states and 1059 transitions. [2023-08-27 11:57:19,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 185 transitions, 800 flow [2023-08-27 11:57:19,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 185 transitions, 797 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:57:19,227 INFO L231 Difference]: Finished difference. Result has 93 places, 97 transitions, 342 flow [2023-08-27 11:57:19,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=93, PETRI_TRANSITIONS=97} [2023-08-27 11:57:19,228 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-08-27 11:57:19,228 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 97 transitions, 342 flow [2023-08-27 11:57:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:19,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:19,228 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 11:57:19,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 11:57:19,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:19,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash -865784573, now seen corresponding path program 1 times [2023-08-27 11:57:19,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:19,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792206694] [2023-08-27 11:57:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:19,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:19,254 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 11:57:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792206694] [2023-08-27 11:57:19,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792206694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:19,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:19,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:57:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502145999] [2023-08-27 11:57:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:19,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 609 [2023-08-27 11:57:19,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 97 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:19,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:19,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 609 [2023-08-27 11:57:19,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:21,349 INFO L124 PetriNetUnfolderBase]: 22298/35681 cut-off events. [2023-08-27 11:57:21,349 INFO L125 PetriNetUnfolderBase]: For 13262/13262 co-relation queries the response was YES. [2023-08-27 11:57:21,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85669 conditions, 35681 events. 22298/35681 cut-off events. For 13262/13262 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 284817 event pairs, 4838 based on Foata normal form. 411/30231 useless extension candidates. Maximal degree in co-relation 85659. Up to 31362 conditions per place. [2023-08-27 11:57:21,508 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 127 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2023-08-27 11:57:21,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 140 transitions, 752 flow [2023-08-27 11:57:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:57:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:57:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-27 11:57:21,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488232074438971 [2023-08-27 11:57:21,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-27 11:57:21,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-27 11:57:21,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:21,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-27 11:57:21,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,517 INFO L175 Difference]: Start difference. First operand has 93 places, 97 transitions, 342 flow. Second operand 3 states and 892 transitions. [2023-08-27 11:57:21,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 140 transitions, 752 flow [2023-08-27 11:57:21,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 140 transitions, 752 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:57:21,524 INFO L231 Difference]: Finished difference. Result has 94 places, 96 transitions, 342 flow [2023-08-27 11:57:21,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=94, PETRI_TRANSITIONS=96} [2023-08-27 11:57:21,524 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 7 predicate places. [2023-08-27 11:57:21,524 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 96 transitions, 342 flow [2023-08-27 11:57:21,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:21,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:21,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 11:57:21,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:21,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -864652898, now seen corresponding path program 1 times [2023-08-27 11:57:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:21,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539945471] [2023-08-27 11:57:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:21,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:21,567 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 11:57:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539945471] [2023-08-27 11:57:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539945471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049484170] [2023-08-27 11:57:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:21,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:21,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:21,573 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 11:57:21,576 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 11:57:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:21,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 11:57:21,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:21,694 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 11:57:21,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 11:57:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049484170] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:21,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:21,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 11:57:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448415006] [2023-08-27 11:57:21,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:57:21,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 609 [2023-08-27 11:57:21,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:21,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:21,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 609 [2023-08-27 11:57:21,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:21,987 INFO L124 PetriNetUnfolderBase]: 1925/3634 cut-off events. [2023-08-27 11:57:21,987 INFO L125 PetriNetUnfolderBase]: For 2519/2519 co-relation queries the response was YES. [2023-08-27 11:57:21,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10466 conditions, 3634 events. 1925/3634 cut-off events. For 2519/2519 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25039 event pairs, 231 based on Foata normal form. 431/3776 useless extension candidates. Maximal degree in co-relation 10455. Up to 2342 conditions per place. [2023-08-27 11:57:22,002 INFO L140 encePairwiseOnDemand]: 606/609 looper letters, 106 selfloop transitions, 3 changer transitions 4/121 dead transitions. [2023-08-27 11:57:22,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 121 transitions, 662 flow [2023-08-27 11:57:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:57:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:57:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1407 transitions. [2023-08-27 11:57:22,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2023-08-27 11:57:22,007 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1407 transitions. [2023-08-27 11:57:22,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1407 transitions. [2023-08-27 11:57:22,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:22,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1407 transitions. [2023-08-27 11:57:22,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.4) internal successors, (1407), 5 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,015 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,015 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 342 flow. Second operand 5 states and 1407 transitions. [2023-08-27 11:57:22,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 121 transitions, 662 flow [2023-08-27 11:57:22,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 659 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 11:57:22,021 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 221 flow [2023-08-27 11:57:22,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-08-27 11:57:22,022 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2023-08-27 11:57:22,022 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 221 flow [2023-08-27 11:57:22,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:22,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:22,031 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 11:57:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:22,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:22,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1065791998, now seen corresponding path program 1 times [2023-08-27 11:57:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:22,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224003214] [2023-08-27 11:57:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:22,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:22,404 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 11:57:22,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224003214] [2023-08-27 11:57:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224003214] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:22,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:22,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:57:22,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883405571] [2023-08-27 11:57:22,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:22,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:22,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:57:22,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 609 [2023-08-27 11:57:22,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:22,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:22,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 609 [2023-08-27 11:57:22,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:22,978 INFO L124 PetriNetUnfolderBase]: 2353/4217 cut-off events. [2023-08-27 11:57:22,978 INFO L125 PetriNetUnfolderBase]: For 5215/5215 co-relation queries the response was YES. [2023-08-27 11:57:22,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12259 conditions, 4217 events. 2353/4217 cut-off events. For 5215/5215 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28468 event pairs, 549 based on Foata normal form. 18/3938 useless extension candidates. Maximal degree in co-relation 12248. Up to 2085 conditions per place. [2023-08-27 11:57:22,993 INFO L140 encePairwiseOnDemand]: 592/609 looper letters, 119 selfloop transitions, 21 changer transitions 4/152 dead transitions. [2023-08-27 11:57:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 152 transitions, 830 flow [2023-08-27 11:57:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:57:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:57:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1841 transitions. [2023-08-27 11:57:22,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37787356321839083 [2023-08-27 11:57:22,998 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1841 transitions. [2023-08-27 11:57:22,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1841 transitions. [2023-08-27 11:57:22,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:22,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1841 transitions. [2023-08-27 11:57:23,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 230.125) internal successors, (1841), 8 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 609.0) internal successors, (5481), 9 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,008 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 609.0) internal successors, (5481), 9 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,009 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 221 flow. Second operand 8 states and 1841 transitions. [2023-08-27 11:57:23,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 152 transitions, 830 flow [2023-08-27 11:57:23,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 152 transitions, 805 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:23,015 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 386 flow [2023-08-27 11:57:23,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-27 11:57:23,015 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2023-08-27 11:57:23,015 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 386 flow [2023-08-27 11:57:23,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.66666666666666) internal successors, (1282), 6 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:23,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:23,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 11:57:23,016 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:23,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1065791932, now seen corresponding path program 1 times [2023-08-27 11:57:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693984997] [2023-08-27 11:57:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:23,083 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 11:57:23,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693984997] [2023-08-27 11:57:23,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693984997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:23,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:57:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262125363] [2023-08-27 11:57:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:23,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:57:23,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:23,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:57:23,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:57:23,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 609 [2023-08-27 11:57:23,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:23,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 609 [2023-08-27 11:57:23,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:23,551 INFO L124 PetriNetUnfolderBase]: 2500/4823 cut-off events. [2023-08-27 11:57:23,552 INFO L125 PetriNetUnfolderBase]: For 9209/9215 co-relation queries the response was YES. [2023-08-27 11:57:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15254 conditions, 4823 events. 2500/4823 cut-off events. For 9209/9215 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 35582 event pairs, 865 based on Foata normal form. 161/4836 useless extension candidates. Maximal degree in co-relation 15241. Up to 2244 conditions per place. [2023-08-27 11:57:23,577 INFO L140 encePairwiseOnDemand]: 594/609 looper letters, 111 selfloop transitions, 39 changer transitions 3/161 dead transitions. [2023-08-27 11:57:23,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 161 transitions, 1093 flow [2023-08-27 11:57:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:57:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:57:23,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1202 transitions. [2023-08-27 11:57:23,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947454844006568 [2023-08-27 11:57:23,581 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1202 transitions. [2023-08-27 11:57:23,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1202 transitions. [2023-08-27 11:57:23,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:23,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1202 transitions. [2023-08-27 11:57:23,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 240.4) internal successors, (1202), 5 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,588 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,588 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 386 flow. Second operand 5 states and 1202 transitions. [2023-08-27 11:57:23,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 161 transitions, 1093 flow [2023-08-27 11:57:23,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 161 transitions, 1059 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-27 11:57:23,605 INFO L231 Difference]: Finished difference. Result has 84 places, 99 transitions, 746 flow [2023-08-27 11:57:23,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=746, PETRI_PLACES=84, PETRI_TRANSITIONS=99} [2023-08-27 11:57:23,605 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2023-08-27 11:57:23,606 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 99 transitions, 746 flow [2023-08-27 11:57:23,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.5) internal successors, (874), 4 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:23,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:23,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:23,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 11:57:23,606 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:23,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1172567044, now seen corresponding path program 1 times [2023-08-27 11:57:23,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:23,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190222974] [2023-08-27 11:57:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:23,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:23,776 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 11:57:23,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:23,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190222974] [2023-08-27 11:57:23,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190222974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:23,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091587647] [2023-08-27 11:57:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:23,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:23,777 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 11:57:23,785 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 11:57:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:23,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:57:23,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:23,958 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:23,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 127 [2023-08-27 11:57:23,970 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 109 treesize of output 109 [2023-08-27 11:57:24,007 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 11:57:24,061 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 11:57:24,093 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 11:57:24,105 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 11:57:24,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:57:24,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091587647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:24,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:57:24,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:57:24,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903386491] [2023-08-27 11:57:24,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:24,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:24,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:57:24,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 609 [2023-08-27 11:57:24,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 99 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:24,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:24,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 609 [2023-08-27 11:57:24,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:24,535 INFO L124 PetriNetUnfolderBase]: 2363/4545 cut-off events. [2023-08-27 11:57:24,535 INFO L125 PetriNetUnfolderBase]: For 13866/13871 co-relation queries the response was YES. [2023-08-27 11:57:24,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16294 conditions, 4545 events. 2363/4545 cut-off events. For 13866/13871 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 32613 event pairs, 978 based on Foata normal form. 52/4447 useless extension candidates. Maximal degree in co-relation 16277. Up to 2595 conditions per place. [2023-08-27 11:57:24,651 INFO L140 encePairwiseOnDemand]: 601/609 looper letters, 125 selfloop transitions, 15 changer transitions 2/150 dead transitions. [2023-08-27 11:57:24,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 150 transitions, 1279 flow [2023-08-27 11:57:24,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:57:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:57:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1157 transitions. [2023-08-27 11:57:24,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37996715927750413 [2023-08-27 11:57:24,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1157 transitions. [2023-08-27 11:57:24,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1157 transitions. [2023-08-27 11:57:24,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:24,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1157 transitions. [2023-08-27 11:57:24,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.4) internal successors, (1157), 5 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:24,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:24,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:24,664 INFO L175 Difference]: Start difference. First operand has 84 places, 99 transitions, 746 flow. Second operand 5 states and 1157 transitions. [2023-08-27 11:57:24,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 150 transitions, 1279 flow [2023-08-27 11:57:24,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 1277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:57:24,680 INFO L231 Difference]: Finished difference. Result has 88 places, 99 transitions, 794 flow [2023-08-27 11:57:24,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=794, PETRI_PLACES=88, PETRI_TRANSITIONS=99} [2023-08-27 11:57:24,680 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 1 predicate places. [2023-08-27 11:57:24,680 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 99 transitions, 794 flow [2023-08-27 11:57:24,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:24,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:24,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:24,691 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 11:57:24,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:24,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:24,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:24,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1172567110, now seen corresponding path program 1 times [2023-08-27 11:57:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:24,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109058234] [2023-08-27 11:57:24,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:25,056 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 11:57:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109058234] [2023-08-27 11:57:25,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109058234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:25,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210887831] [2023-08-27 11:57:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:25,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:25,058 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 11:57:25,060 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 11:57:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:25,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 11:57:25,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:25,253 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:25,253 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 127 [2023-08-27 11:57:25,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 109 treesize of output 109 [2023-08-27 11:57:25,320 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 11:57:25,347 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 11:57:25,358 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 11:57:25,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:57:25,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210887831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:25,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:57:25,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-08-27 11:57:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56874371] [2023-08-27 11:57:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-27 11:57:25,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 609 [2023-08-27 11:57:25,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 99 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:25,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:25,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 609 [2023-08-27 11:57:25,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:25,711 INFO L124 PetriNetUnfolderBase]: 2262/4310 cut-off events. [2023-08-27 11:57:25,711 INFO L125 PetriNetUnfolderBase]: For 14916/14921 co-relation queries the response was YES. [2023-08-27 11:57:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15630 conditions, 4310 events. 2262/4310 cut-off events. For 14916/14921 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 29986 event pairs, 1481 based on Foata normal form. 58/4220 useless extension candidates. Maximal degree in co-relation 15612. Up to 3101 conditions per place. [2023-08-27 11:57:25,733 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 88 selfloop transitions, 21 changer transitions 11/128 dead transitions. [2023-08-27 11:57:25,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 128 transitions, 1116 flow [2023-08-27 11:57:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:57:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:57:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1144 transitions. [2023-08-27 11:57:25,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3756978653530378 [2023-08-27 11:57:25,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1144 transitions. [2023-08-27 11:57:25,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1144 transitions. [2023-08-27 11:57:25,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:25,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1144 transitions. [2023-08-27 11:57:25,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.8) internal successors, (1144), 5 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:25,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:25,742 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:25,742 INFO L175 Difference]: Start difference. First operand has 88 places, 99 transitions, 794 flow. Second operand 5 states and 1144 transitions. [2023-08-27 11:57:25,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 128 transitions, 1116 flow [2023-08-27 11:57:25,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 128 transitions, 1093 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:25,759 INFO L231 Difference]: Finished difference. Result has 90 places, 85 transitions, 743 flow [2023-08-27 11:57:25,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=90, PETRI_TRANSITIONS=85} [2023-08-27 11:57:25,759 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-27 11:57:25,759 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 85 transitions, 743 flow [2023-08-27 11:57:25,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 214.0) internal successors, (1284), 6 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:25,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:25,760 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:25,776 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 11:57:25,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:25,970 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:25,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:25,970 INFO L85 PathProgramCache]: Analyzing trace with hash 699810434, now seen corresponding path program 1 times [2023-08-27 11:57:25,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:25,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089322973] [2023-08-27 11:57:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:26,117 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 11:57:26,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:26,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089322973] [2023-08-27 11:57:26,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089322973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:26,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041553361] [2023-08-27 11:57:26,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:26,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:26,119 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 11:57:26,121 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 11:57:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:26,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-27 11:57:26,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:26,283 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 119 treesize of output 119 [2023-08-27 11:57:26,301 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:26,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 121 [2023-08-27 11:57:26,332 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 11:57:26,355 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 11:57:26,396 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 11:57:26,418 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 11:57:26,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:26,471 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_455 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_455) |c_~#A~0.base|) |c_~#A~0.offset|)))) is different from false [2023-08-27 11:57:26,488 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 11:57:26,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041553361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:26,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 11:57:26,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318901540] [2023-08-27 11:57:26,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:26,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:57:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:57:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2023-08-27 11:57:26,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 609 [2023-08-27 11:57:26,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 85 transitions, 743 flow. Second operand has 14 states, 14 states have (on average 215.0) internal successors, (3010), 14 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:26,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:26,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 609 [2023-08-27 11:57:26,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:27,242 INFO L124 PetriNetUnfolderBase]: 2339/4462 cut-off events. [2023-08-27 11:57:27,243 INFO L125 PetriNetUnfolderBase]: For 19710/19715 co-relation queries the response was YES. [2023-08-27 11:57:27,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16877 conditions, 4462 events. 2339/4462 cut-off events. For 19710/19715 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 31459 event pairs, 555 based on Foata normal form. 130/4463 useless extension candidates. Maximal degree in co-relation 16856. Up to 1899 conditions per place. [2023-08-27 11:57:27,259 INFO L140 encePairwiseOnDemand]: 592/609 looper letters, 165 selfloop transitions, 89 changer transitions 29/291 dead transitions. [2023-08-27 11:57:27,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 291 transitions, 2760 flow [2023-08-27 11:57:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 11:57:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 11:57:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3604 transitions. [2023-08-27 11:57:27,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36986863711001644 [2023-08-27 11:57:27,266 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3604 transitions. [2023-08-27 11:57:27,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3604 transitions. [2023-08-27 11:57:27,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:27,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3604 transitions. [2023-08-27 11:57:27,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 225.25) internal successors, (3604), 16 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:27,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 609.0) internal successors, (10353), 17 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:27,375 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 609.0) internal successors, (10353), 17 states have internal predecessors, (10353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:27,376 INFO L175 Difference]: Start difference. First operand has 90 places, 85 transitions, 743 flow. Second operand 16 states and 3604 transitions. [2023-08-27 11:57:27,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 291 transitions, 2760 flow [2023-08-27 11:57:27,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 291 transitions, 2662 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:27,407 INFO L231 Difference]: Finished difference. Result has 110 places, 160 transitions, 1853 flow [2023-08-27 11:57:27,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1853, PETRI_PLACES=110, PETRI_TRANSITIONS=160} [2023-08-27 11:57:27,408 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-08-27 11:57:27,408 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 160 transitions, 1853 flow [2023-08-27 11:57:27,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 215.0) internal successors, (3010), 14 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:27,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:27,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:27,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 11:57:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:27,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:27,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:27,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1326779247, now seen corresponding path program 1 times [2023-08-27 11:57:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19005017] [2023-08-27 11:57:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:27,713 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 11:57:27,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19005017] [2023-08-27 11:57:27,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19005017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:27,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185113649] [2023-08-27 11:57:27,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:27,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:27,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:27,717 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 11:57:27,728 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 11:57:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:27,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 11:57:27,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:27,858 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 11:57:27,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 11:57:27,880 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 11:57:27,892 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 11:57:27,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:57:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185113649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:57:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-27 11:57:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599886236] [2023-08-27 11:57:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:57:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:57:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-27 11:57:27,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 609 [2023-08-27 11:57:27,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 160 transitions, 1853 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:27,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:27,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 609 [2023-08-27 11:57:27,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:28,117 INFO L124 PetriNetUnfolderBase]: 879/1845 cut-off events. [2023-08-27 11:57:28,117 INFO L125 PetriNetUnfolderBase]: For 9172/9172 co-relation queries the response was YES. [2023-08-27 11:57:28,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1845 events. 879/1845 cut-off events. For 9172/9172 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11585 event pairs, 245 based on Foata normal form. 227/1955 useless extension candidates. Maximal degree in co-relation 7741. Up to 1191 conditions per place. [2023-08-27 11:57:28,125 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 90 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-08-27 11:57:28,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 1278 flow [2023-08-27 11:57:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:57:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:57:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 925 transitions. [2023-08-27 11:57:28,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3797208538587849 [2023-08-27 11:57:28,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 925 transitions. [2023-08-27 11:57:28,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 925 transitions. [2023-08-27 11:57:28,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:28,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 925 transitions. [2023-08-27 11:57:28,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,131 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,132 INFO L175 Difference]: Start difference. First operand has 110 places, 160 transitions, 1853 flow. Second operand 4 states and 925 transitions. [2023-08-27 11:57:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 1278 flow [2023-08-27 11:57:28,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 1175 flow, removed 37 selfloop flow, removed 9 redundant places. [2023-08-27 11:57:28,154 INFO L231 Difference]: Finished difference. Result has 96 places, 93 transitions, 886 flow [2023-08-27 11:57:28,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=886, PETRI_PLACES=96, PETRI_TRANSITIONS=93} [2023-08-27 11:57:28,155 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 9 predicate places. [2023-08-27 11:57:28,155 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 93 transitions, 886 flow [2023-08-27 11:57:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:28,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:28,163 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 11:57:28,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:28,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:28,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash -155485834, now seen corresponding path program 1 times [2023-08-27 11:57:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:28,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582425163] [2023-08-27 11:57:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:28,425 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 11:57:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582425163] [2023-08-27 11:57:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582425163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:28,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:28,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:57:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969064050] [2023-08-27 11:57:28,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:57:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:57:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:57:28,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 609 [2023-08-27 11:57:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 886 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 609 [2023-08-27 11:57:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:28,671 INFO L124 PetriNetUnfolderBase]: 811/1844 cut-off events. [2023-08-27 11:57:28,671 INFO L125 PetriNetUnfolderBase]: For 8179/8179 co-relation queries the response was YES. [2023-08-27 11:57:28,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 1844 events. 811/1844 cut-off events. For 8179/8179 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 12618 event pairs, 256 based on Foata normal form. 49/1813 useless extension candidates. Maximal degree in co-relation 7633. Up to 913 conditions per place. [2023-08-27 11:57:28,683 INFO L140 encePairwiseOnDemand]: 601/609 looper letters, 127 selfloop transitions, 10 changer transitions 0/143 dead transitions. [2023-08-27 11:57:28,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 1603 flow [2023-08-27 11:57:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:57:28,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:57:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 744 transitions. [2023-08-27 11:57:28,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072249589490969 [2023-08-27 11:57:28,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 744 transitions. [2023-08-27 11:57:28,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 744 transitions. [2023-08-27 11:57:28,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:28,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 744 transitions. [2023-08-27 11:57:28,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.0) internal successors, (744), 3 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 609.0) internal successors, (2436), 4 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,697 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 886 flow. Second operand 3 states and 744 transitions. [2023-08-27 11:57:28,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 1603 flow [2023-08-27 11:57:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 1579 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:57:28,714 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 940 flow [2023-08-27 11:57:28,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=940, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2023-08-27 11:57:28,715 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2023-08-27 11:57:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 940 flow [2023-08-27 11:57:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:28,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 11:57:28,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:28,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1786784356, now seen corresponding path program 2 times [2023-08-27 11:57:28,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:28,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333125368] [2023-08-27 11:57:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:28,819 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 11:57:28,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:28,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333125368] [2023-08-27 11:57:28,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333125368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:28,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:28,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 11:57:28,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378179145] [2023-08-27 11:57:28,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:28,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:57:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:57:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:57:28,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 609 [2023-08-27 11:57:28,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 940 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:28,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 609 [2023-08-27 11:57:28,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:28,917 INFO L124 PetriNetUnfolderBase]: 172/528 cut-off events. [2023-08-27 11:57:28,917 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-08-27 11:57:28,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 528 events. 172/528 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2710 event pairs, 30 based on Foata normal form. 47/559 useless extension candidates. Maximal degree in co-relation 2413. Up to 422 conditions per place. [2023-08-27 11:57:28,919 INFO L140 encePairwiseOnDemand]: 604/609 looper letters, 66 selfloop transitions, 5 changer transitions 9/86 dead transitions. [2023-08-27 11:57:28,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 86 transitions, 951 flow [2023-08-27 11:57:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 11:57:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 11:57:28,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 912 transitions. [2023-08-27 11:57:28,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37438423645320196 [2023-08-27 11:57:28,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 912 transitions. [2023-08-27 11:57:28,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 912 transitions. [2023-08-27 11:57:28,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:28,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 912 transitions. [2023-08-27 11:57:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,925 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 940 flow. Second operand 4 states and 912 transitions. [2023-08-27 11:57:28,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 86 transitions, 951 flow [2023-08-27 11:57:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 86 transitions, 853 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-08-27 11:57:28,933 INFO L231 Difference]: Finished difference. Result has 93 places, 72 transitions, 557 flow [2023-08-27 11:57:28,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=93, PETRI_TRANSITIONS=72} [2023-08-27 11:57:28,934 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 6 predicate places. [2023-08-27 11:57:28,936 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 72 transitions, 557 flow [2023-08-27 11:57:28,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:28,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:28,937 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] [2023-08-27 11:57:28,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 11:57:28,937 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:28,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:28,938 INFO L85 PathProgramCache]: Analyzing trace with hash 118688904, now seen corresponding path program 1 times [2023-08-27 11:57:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:28,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942904055] [2023-08-27 11:57:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:29,186 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 11:57:29,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942904055] [2023-08-27 11:57:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942904055] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:29,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055975102] [2023-08-27 11:57:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:29,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:29,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:29,189 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 11:57:29,216 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 11:57:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:29,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 11:57:29,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:29,412 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:29,412 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 127 [2023-08-27 11:57:29,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 109 treesize of output 109 [2023-08-27 11:57:29,459 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 11:57:29,482 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 11:57:29,523 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 19 treesize of output 11 [2023-08-27 11:57:29,563 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 19 treesize of output 11 [2023-08-27 11:57:29,580 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 11:57:29,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:29,635 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 11:57:29,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055975102] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:29,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:29,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 11:57:29,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999041569] [2023-08-27 11:57:29,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:29,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:57:29,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:57:29,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:57:29,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 609 [2023-08-27 11:57:29,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 72 transitions, 557 flow. Second operand has 12 states, 12 states have (on average 209.5) internal successors, (2514), 12 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:29,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:29,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 609 [2023-08-27 11:57:29,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:29,875 INFO L124 PetriNetUnfolderBase]: 141/475 cut-off events. [2023-08-27 11:57:29,876 INFO L125 PetriNetUnfolderBase]: For 1949/1967 co-relation queries the response was YES. [2023-08-27 11:57:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 475 events. 141/475 cut-off events. For 1949/1967 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2453 event pairs, 45 based on Foata normal form. 16/471 useless extension candidates. Maximal degree in co-relation 1943. Up to 244 conditions per place. [2023-08-27 11:57:29,878 INFO L140 encePairwiseOnDemand]: 597/609 looper letters, 81 selfloop transitions, 21 changer transitions 5/115 dead transitions. [2023-08-27 11:57:29,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 115 transitions, 1003 flow [2023-08-27 11:57:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 11:57:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 11:57:29,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2771 transitions. [2023-08-27 11:57:29,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3500063155235569 [2023-08-27 11:57:29,884 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2771 transitions. [2023-08-27 11:57:29,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2771 transitions. [2023-08-27 11:57:29,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:29,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2771 transitions. [2023-08-27 11:57:29,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.15384615384616) internal successors, (2771), 13 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:29,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 609.0) internal successors, (8526), 14 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:29,896 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 609.0) internal successors, (8526), 14 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:29,896 INFO L175 Difference]: Start difference. First operand has 93 places, 72 transitions, 557 flow. Second operand 13 states and 2771 transitions. [2023-08-27 11:57:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 115 transitions, 1003 flow [2023-08-27 11:57:29,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 981 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:29,903 INFO L231 Difference]: Finished difference. Result has 106 places, 83 transitions, 703 flow [2023-08-27 11:57:29,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=703, PETRI_PLACES=106, PETRI_TRANSITIONS=83} [2023-08-27 11:57:29,903 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 19 predicate places. [2023-08-27 11:57:29,903 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 83 transitions, 703 flow [2023-08-27 11:57:29,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 209.5) internal successors, (2514), 12 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:29,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:29,904 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] [2023-08-27 11:57:29,913 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 11:57:30,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-27 11:57:30,110 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:30,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 607463583, now seen corresponding path program 1 times [2023-08-27 11:57:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684593323] [2023-08-27 11:57:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:30,365 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 11:57:30,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:30,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684593323] [2023-08-27 11:57:30,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684593323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217470988] [2023-08-27 11:57:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:30,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:30,369 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 11:57:30,379 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 11:57:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:30,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 11:57:30,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:30,579 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:30,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 127 [2023-08-27 11:57:30,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 109 treesize of output 109 [2023-08-27 11:57:30,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 11:57:30,651 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 11:57:30,687 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 19 treesize of output 11 [2023-08-27 11:57:30,722 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 19 treesize of output 11 [2023-08-27 11:57:30,738 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 11:57:30,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:30,792 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 11:57:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217470988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:30,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:30,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 11:57:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574191327] [2023-08-27 11:57:30,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 11:57:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 11:57:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-27 11:57:30,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 609 [2023-08-27 11:57:30,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 83 transitions, 703 flow. Second operand has 12 states, 12 states have (on average 209.16666666666666) internal successors, (2510), 12 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:30,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:30,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 609 [2023-08-27 11:57:30,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:31,012 INFO L124 PetriNetUnfolderBase]: 177/583 cut-off events. [2023-08-27 11:57:31,012 INFO L125 PetriNetUnfolderBase]: For 2535/2538 co-relation queries the response was YES. [2023-08-27 11:57:31,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 583 events. 177/583 cut-off events. For 2535/2538 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3240 event pairs, 55 based on Foata normal form. 18/575 useless extension candidates. Maximal degree in co-relation 2383. Up to 264 conditions per place. [2023-08-27 11:57:31,015 INFO L140 encePairwiseOnDemand]: 599/609 looper letters, 109 selfloop transitions, 14 changer transitions 3/134 dead transitions. [2023-08-27 11:57:31,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 1243 flow [2023-08-27 11:57:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:57:31,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:57:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1951 transitions. [2023-08-27 11:57:31,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3559569421638387 [2023-08-27 11:57:31,017 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1951 transitions. [2023-08-27 11:57:31,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1951 transitions. [2023-08-27 11:57:31,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:31,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1951 transitions. [2023-08-27 11:57:31,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.77777777777777) internal successors, (1951), 9 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:31,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:31,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:31,025 INFO L175 Difference]: Start difference. First operand has 106 places, 83 transitions, 703 flow. Second operand 9 states and 1951 transitions. [2023-08-27 11:57:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 1243 flow [2023-08-27 11:57:31,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 134 transitions, 1202 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-27 11:57:31,034 INFO L231 Difference]: Finished difference. Result has 115 places, 89 transitions, 797 flow [2023-08-27 11:57:31,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=115, PETRI_TRANSITIONS=89} [2023-08-27 11:57:31,035 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 28 predicate places. [2023-08-27 11:57:31,035 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 89 transitions, 797 flow [2023-08-27 11:57:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 209.16666666666666) internal successors, (2510), 12 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:31,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:31,036 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] [2023-08-27 11:57:31,047 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 11:57:31,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-27 11:57:31,241 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:31,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:31,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1306263091, now seen corresponding path program 2 times [2023-08-27 11:57:31,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:31,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791600226] [2023-08-27 11:57:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:31,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:31,506 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 11:57:31,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791600226] [2023-08-27 11:57:31,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791600226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273601855] [2023-08-27 11:57:31,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:57:31,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:31,509 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 11:57:31,544 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 11:57:31,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:57:31,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:57:31,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-27 11:57:31,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:31,760 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:31,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 127 [2023-08-27 11:57:31,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 109 treesize of output 109 [2023-08-27 11:57:31,827 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 11:57:31,877 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 19 treesize of output 11 [2023-08-27 11:57:31,902 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 11:57:31,937 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 19 treesize of output 11 [2023-08-27 11:57:31,965 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 11:57:31,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:32,049 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 11:57:32,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273601855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:32,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:32,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 11:57:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137602570] [2023-08-27 11:57:32,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:32,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 11:57:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 11:57:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-27 11:57:32,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 609 [2023-08-27 11:57:32,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 89 transitions, 797 flow. Second operand has 14 states, 14 states have (on average 208.71428571428572) internal successors, (2922), 14 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 11:57:32,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:32,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 609 [2023-08-27 11:57:32,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:32,206 INFO L124 PetriNetUnfolderBase]: 173/570 cut-off events. [2023-08-27 11:57:32,206 INFO L125 PetriNetUnfolderBase]: For 3031/3034 co-relation queries the response was YES. [2023-08-27 11:57:32,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 570 events. 173/570 cut-off events. For 3031/3034 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3141 event pairs, 87 based on Foata normal form. 9/553 useless extension candidates. Maximal degree in co-relation 2424. Up to 228 conditions per place. [2023-08-27 11:57:32,208 INFO L140 encePairwiseOnDemand]: 600/609 looper letters, 79 selfloop transitions, 14 changer transitions 5/105 dead transitions. [2023-08-27 11:57:32,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 105 transitions, 1077 flow [2023-08-27 11:57:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:57:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:57:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1293 transitions. [2023-08-27 11:57:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35385878489326766 [2023-08-27 11:57:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1293 transitions. [2023-08-27 11:57:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1293 transitions. [2023-08-27 11:57:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:32,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1293 transitions. [2023-08-27 11:57:32,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,214 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 609.0) internal successors, (4263), 7 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,214 INFO L175 Difference]: Start difference. First operand has 115 places, 89 transitions, 797 flow. Second operand 6 states and 1293 transitions. [2023-08-27 11:57:32,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 105 transitions, 1077 flow [2023-08-27 11:57:32,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 105 transitions, 1034 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 11:57:32,221 INFO L231 Difference]: Finished difference. Result has 111 places, 83 transitions, 726 flow [2023-08-27 11:57:32,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=726, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2023-08-27 11:57:32,222 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 24 predicate places. [2023-08-27 11:57:32,222 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 726 flow [2023-08-27 11:57:32,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 208.71428571428572) internal successors, (2922), 14 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 11:57:32,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:32,222 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] [2023-08-27 11:57:32,232 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 11:57:32,427 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,SelfDestructingSolverStorable26 [2023-08-27 11:57:32,427 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:32,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:32,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1465939888, now seen corresponding path program 1 times [2023-08-27 11:57:32,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:32,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188175892] [2023-08-27 11:57:32,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:32,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:32,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:57:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:32,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188175892] [2023-08-27 11:57:32,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188175892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:32,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:32,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:57:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773517233] [2023-08-27 11:57:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:32,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 11:57:32,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 11:57:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 11:57:32,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 609 [2023-08-27 11:57:32,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 726 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:32,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 609 [2023-08-27 11:57:32,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:32,647 INFO L124 PetriNetUnfolderBase]: 163/530 cut-off events. [2023-08-27 11:57:32,648 INFO L125 PetriNetUnfolderBase]: For 2358/2361 co-relation queries the response was YES. [2023-08-27 11:57:32,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 530 events. 163/530 cut-off events. For 2358/2361 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2869 event pairs, 99 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 2236. Up to 337 conditions per place. [2023-08-27 11:57:32,650 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 58 selfloop transitions, 30 changer transitions 0/95 dead transitions. [2023-08-27 11:57:32,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 95 transitions, 962 flow [2023-08-27 11:57:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 11:57:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 11:57:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1135 transitions. [2023-08-27 11:57:32,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727422003284072 [2023-08-27 11:57:32,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1135 transitions. [2023-08-27 11:57:32,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1135 transitions. [2023-08-27 11:57:32,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:32,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1135 transitions. [2023-08-27 11:57:32,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 609.0) internal successors, (3654), 6 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,656 INFO L175 Difference]: Start difference. First operand has 111 places, 83 transitions, 726 flow. Second operand 5 states and 1135 transitions. [2023-08-27 11:57:32,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 95 transitions, 962 flow [2023-08-27 11:57:32,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 95 transitions, 932 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 11:57:32,663 INFO L231 Difference]: Finished difference. Result has 110 places, 84 transitions, 819 flow [2023-08-27 11:57:32,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=819, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2023-08-27 11:57:32,664 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 23 predicate places. [2023-08-27 11:57:32,664 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 819 flow [2023-08-27 11:57:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:32,664 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] [2023-08-27 11:57:32,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 11:57:32,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:32,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -368608492, now seen corresponding path program 2 times [2023-08-27 11:57:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69835252] [2023-08-27 11:57:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-27 11:57:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69835252] [2023-08-27 11:57:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69835252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:57:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333114411] [2023-08-27 11:57:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:32,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:57:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:57:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:57:32,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 609 [2023-08-27 11:57:32,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 819 flow. Second operand has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:32,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:32,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 609 [2023-08-27 11:57:32,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:33,126 INFO L124 PetriNetUnfolderBase]: 163/527 cut-off events. [2023-08-27 11:57:33,126 INFO L125 PetriNetUnfolderBase]: For 2577/2586 co-relation queries the response was YES. [2023-08-27 11:57:33,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 527 events. 163/527 cut-off events. For 2577/2586 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2805 event pairs, 76 based on Foata normal form. 6/519 useless extension candidates. Maximal degree in co-relation 2283. Up to 268 conditions per place. [2023-08-27 11:57:33,129 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 64 selfloop transitions, 21 changer transitions 2/94 dead transitions. [2023-08-27 11:57:33,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 94 transitions, 1029 flow [2023-08-27 11:57:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 11:57:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 11:57:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1701 transitions. [2023-08-27 11:57:33,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34913793103448276 [2023-08-27 11:57:33,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1701 transitions. [2023-08-27 11:57:33,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1701 transitions. [2023-08-27 11:57:33,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:33,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1701 transitions. [2023-08-27 11:57:33,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 212.625) internal successors, (1701), 8 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 609.0) internal successors, (5481), 9 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 609.0) internal successors, (5481), 9 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,137 INFO L175 Difference]: Start difference. First operand has 110 places, 84 transitions, 819 flow. Second operand 8 states and 1701 transitions. [2023-08-27 11:57:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 94 transitions, 1029 flow [2023-08-27 11:57:33,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 934 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-08-27 11:57:33,145 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 712 flow [2023-08-27 11:57:33,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=712, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2023-08-27 11:57:33,145 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-08-27 11:57:33,145 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 712 flow [2023-08-27 11:57:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:33,146 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, 1, 1, 1] [2023-08-27 11:57:33,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 11:57:33,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:33,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1899889327, now seen corresponding path program 1 times [2023-08-27 11:57:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455006343] [2023-08-27 11:57:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:33,270 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 11:57:33,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:33,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455006343] [2023-08-27 11:57:33,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455006343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:33,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:33,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:57:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283373786] [2023-08-27 11:57:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:33,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:57:33,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 609 [2023-08-27 11:57:33,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:33,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 609 [2023-08-27 11:57:33,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:33,420 INFO L124 PetriNetUnfolderBase]: 147/478 cut-off events. [2023-08-27 11:57:33,420 INFO L125 PetriNetUnfolderBase]: For 1788/1791 co-relation queries the response was YES. [2023-08-27 11:57:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 478 events. 147/478 cut-off events. For 1788/1791 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2503 event pairs, 83 based on Foata normal form. 3/479 useless extension candidates. Maximal degree in co-relation 2007. Up to 291 conditions per place. [2023-08-27 11:57:33,422 INFO L140 encePairwiseOnDemand]: 598/609 looper letters, 49 selfloop transitions, 22 changer transitions 13/91 dead transitions. [2023-08-27 11:57:33,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 91 transitions, 937 flow [2023-08-27 11:57:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:57:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:57:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1945 transitions. [2023-08-27 11:57:33,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35486225141397554 [2023-08-27 11:57:33,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1945 transitions. [2023-08-27 11:57:33,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1945 transitions. [2023-08-27 11:57:33,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:33,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1945 transitions. [2023-08-27 11:57:33,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.11111111111111) internal successors, (1945), 9 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,431 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,431 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 712 flow. Second operand 9 states and 1945 transitions. [2023-08-27 11:57:33,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 91 transitions, 937 flow [2023-08-27 11:57:33,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 881 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 11:57:33,438 INFO L231 Difference]: Finished difference. Result has 105 places, 65 transitions, 582 flow [2023-08-27 11:57:33,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=582, PETRI_PLACES=105, PETRI_TRANSITIONS=65} [2023-08-27 11:57:33,438 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 18 predicate places. [2023-08-27 11:57:33,438 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 65 transitions, 582 flow [2023-08-27 11:57:33,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:33,439 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, 1, 1, 1] [2023-08-27 11:57:33,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 11:57:33,439 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:33,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1347471536, now seen corresponding path program 1 times [2023-08-27 11:57:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:33,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559746659] [2023-08-27 11:57:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:33,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:33,576 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 11:57:33,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559746659] [2023-08-27 11:57:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559746659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:57:33,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406829298] [2023-08-27 11:57:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:57:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:33,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:57:33,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:57:33,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 609 [2023-08-27 11:57:33,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 65 transitions, 582 flow. Second operand has 6 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:33,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 609 [2023-08-27 11:57:33,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:33,731 INFO L124 PetriNetUnfolderBase]: 161/511 cut-off events. [2023-08-27 11:57:33,732 INFO L125 PetriNetUnfolderBase]: For 2110/2115 co-relation queries the response was YES. [2023-08-27 11:57:33,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 511 events. 161/511 cut-off events. For 2110/2115 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2757 event pairs, 72 based on Foata normal form. 3/512 useless extension candidates. Maximal degree in co-relation 2159. Up to 242 conditions per place. [2023-08-27 11:57:33,734 INFO L140 encePairwiseOnDemand]: 599/609 looper letters, 57 selfloop transitions, 24 changer transitions 7/95 dead transitions. [2023-08-27 11:57:33,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 977 flow [2023-08-27 11:57:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:57:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:57:33,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1949 transitions. [2023-08-27 11:57:33,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35559204524721766 [2023-08-27 11:57:33,737 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1949 transitions. [2023-08-27 11:57:33,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1949 transitions. [2023-08-27 11:57:33,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:33,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1949 transitions. [2023-08-27 11:57:33,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.55555555555554) internal successors, (1949), 9 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,743 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 609.0) internal successors, (6090), 10 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,743 INFO L175 Difference]: Start difference. First operand has 105 places, 65 transitions, 582 flow. Second operand 9 states and 1949 transitions. [2023-08-27 11:57:33,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 977 flow [2023-08-27 11:57:33,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 914 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-27 11:57:33,750 INFO L231 Difference]: Finished difference. Result has 104 places, 70 transitions, 662 flow [2023-08-27 11:57:33,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=662, PETRI_PLACES=104, PETRI_TRANSITIONS=70} [2023-08-27 11:57:33,750 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 17 predicate places. [2023-08-27 11:57:33,750 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 70 transitions, 662 flow [2023-08-27 11:57:33,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:33,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:33,751 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, 1, 1, 1] [2023-08-27 11:57:33,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 11:57:33,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:33,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 631427422, now seen corresponding path program 2 times [2023-08-27 11:57:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:33,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552325123] [2023-08-27 11:57:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:33,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:34,030 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 11:57:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552325123] [2023-08-27 11:57:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552325123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:34,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017394737] [2023-08-27 11:57:34,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:57:34,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:34,032 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 11:57:34,033 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 11:57:34,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:57:34,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:57:34,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:57:34,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:34,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 119 treesize of output 119 [2023-08-27 11:57:34,240 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:34,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 121 [2023-08-27 11:57:34,313 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 11:57:34,341 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 11:57:34,389 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 11:57:34,414 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 11:57:34,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 11:57:34,487 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-27 11:57:34,487 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 11:57:34,492 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 11:57:34,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-08-27 11:57:34,551 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 11:57:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017394737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 11:57:34,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 11:57:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-08-27 11:57:34,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591549559] [2023-08-27 11:57:34,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 11:57:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-27 11:57:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:34,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-27 11:57:34,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-08-27 11:57:34,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 609 [2023-08-27 11:57:34,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 70 transitions, 662 flow. Second operand has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:34,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:34,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 609 [2023-08-27 11:57:34,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:34,931 INFO L124 PetriNetUnfolderBase]: 156/495 cut-off events. [2023-08-27 11:57:34,931 INFO L125 PetriNetUnfolderBase]: For 2316/2319 co-relation queries the response was YES. [2023-08-27 11:57:34,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 495 events. 156/495 cut-off events. For 2316/2319 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2604 event pairs, 45 based on Foata normal form. 4/497 useless extension candidates. Maximal degree in co-relation 2192. Up to 152 conditions per place. [2023-08-27 11:57:34,933 INFO L140 encePairwiseOnDemand]: 599/609 looper letters, 31 selfloop transitions, 5 changer transitions 56/98 dead transitions. [2023-08-27 11:57:34,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 98 transitions, 1070 flow [2023-08-27 11:57:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 11:57:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 11:57:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2259 transitions. [2023-08-27 11:57:34,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33721450962830274 [2023-08-27 11:57:34,937 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2259 transitions. [2023-08-27 11:57:34,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2259 transitions. [2023-08-27 11:57:34,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:34,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2259 transitions. [2023-08-27 11:57:34,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 205.36363636363637) internal successors, (2259), 11 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:34,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 609.0) internal successors, (7308), 12 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:34,944 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 609.0) internal successors, (7308), 12 states have internal predecessors, (7308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:34,944 INFO L175 Difference]: Start difference. First operand has 104 places, 70 transitions, 662 flow. Second operand 11 states and 2259 transitions. [2023-08-27 11:57:34,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 98 transitions, 1070 flow [2023-08-27 11:57:34,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 98 transitions, 1032 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-27 11:57:34,951 INFO L231 Difference]: Finished difference. Result has 107 places, 38 transitions, 275 flow [2023-08-27 11:57:34,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=275, PETRI_PLACES=107, PETRI_TRANSITIONS=38} [2023-08-27 11:57:34,952 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 20 predicate places. [2023-08-27 11:57:34,952 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 38 transitions, 275 flow [2023-08-27 11:57:34,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:34,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:34,953 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, 1, 1] [2023-08-27 11:57:34,960 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 11:57:35,158 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,SelfDestructingSolverStorable31 [2023-08-27 11:57:35,158 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 11:57:35,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -462892495, now seen corresponding path program 2 times [2023-08-27 11:57:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858071236] [2023-08-27 11:57:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:35,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:35,442 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 11:57:35,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:35,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858071236] [2023-08-27 11:57:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858071236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 11:57:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065788789] [2023-08-27 11:57:35,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 11:57:35,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 11:57:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:57:35,445 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 11:57:35,471 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 11:57:35,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 11:57:35,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 11:57:35,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 11:57:35,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 11:57:35,656 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 119 treesize of output 119 [2023-08-27 11:57:35,674 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-27 11:57:35,674 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 121 [2023-08-27 11:57:35,752 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 11:57:35,828 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 11:57:35,863 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 11:57:35,875 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 11:57:35,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 11:57:35,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065788789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:35,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 11:57:35,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-08-27 11:57:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960352835] [2023-08-27 11:57:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:35,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 11:57:35,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:35,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 11:57:35,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-08-27 11:57:35,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 609 [2023-08-27 11:57:35,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 38 transitions, 275 flow. Second operand has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:35,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:35,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 609 [2023-08-27 11:57:35,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:57:35,968 INFO L124 PetriNetUnfolderBase]: 37/151 cut-off events. [2023-08-27 11:57:35,968 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2023-08-27 11:57:35,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 151 events. 37/151 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 441 event pairs, 26 based on Foata normal form. 2/153 useless extension candidates. Maximal degree in co-relation 590. Up to 70 conditions per place. [2023-08-27 11:57:35,969 INFO L140 encePairwiseOnDemand]: 601/609 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-27 11:57:35,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 42 transitions, 356 flow [2023-08-27 11:57:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:57:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:57:35,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1473 transitions. [2023-08-27 11:57:35,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34553131597466574 [2023-08-27 11:57:35,971 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1473 transitions. [2023-08-27 11:57:35,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1473 transitions. [2023-08-27 11:57:35,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:57:35,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1473 transitions. [2023-08-27 11:57:35,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:35,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:35,977 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 609.0) internal successors, (4872), 8 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:35,977 INFO L175 Difference]: Start difference. First operand has 107 places, 38 transitions, 275 flow. Second operand 7 states and 1473 transitions. [2023-08-27 11:57:35,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 42 transitions, 356 flow [2023-08-27 11:57:35,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 42 transitions, 273 flow, removed 10 selfloop flow, removed 26 redundant places. [2023-08-27 11:57:35,979 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-27 11:57:35,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=609, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-27 11:57:35,980 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -23 predicate places. [2023-08-27 11:57:35,980 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-27 11:57:35,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:35,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-27 11:57:35,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (20 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONASSERT (19 of 28 remaining) [2023-08-27 11:57:35,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (12 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-27 11:57:35,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-27 11:57:35,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONASSERT (1 of 28 remaining) [2023-08-27 11:57:35,985 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-27 11:57:35,991 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 11:57:36,189 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,SelfDestructingSolverStorable32 [2023-08-27 11:57:36,189 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:57:36,189 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 11:57:36,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 11:57:36,232 INFO L124 PetriNetUnfolderBase]: 77/519 cut-off events. [2023-08-27 11:57:36,232 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:57:36,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 519 events. 77/519 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2096 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 329. Up to 12 conditions per place. [2023-08-27 11:57:36,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 314 transitions, 646 flow [2023-08-27 11:57:36,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 308 transitions, 634 flow [2023-08-27 11:57:36,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:36,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 308 transitions, 634 flow [2023-08-27 11:57:36,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 308 transitions, 634 flow [2023-08-27 11:57:36,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 308 transitions, 634 flow [2023-08-27 11:57:36,294 INFO L124 PetriNetUnfolderBase]: 76/513 cut-off events. [2023-08-27 11:57:36,294 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:57:36,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 513 events. 76/513 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2098 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 323. Up to 12 conditions per place. [2023-08-27 11:57:36,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 38088 [2023-08-27 11:57:43,654 INFO L134 LiptonReduction]: Checked pairs total: 89517 [2023-08-27 11:57:43,655 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-27 11:57:43,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 11:57:43,656 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;@125df31c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:43,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 11:57:43,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:43,663 INFO L124 PetriNetUnfolderBase]: 39/132 cut-off events. [2023-08-27 11:57:43,663 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:57:43,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:43,663 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 11:57:43,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 11:57:43,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:43,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1764177701, now seen corresponding path program 1 times [2023-08-27 11:57:43,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:43,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123336429] [2023-08-27 11:57:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:43,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:43,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 11:57:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 11:57:43,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 11:57:43,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 11:57:43,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 11:57:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 11:57:43,711 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 11:57:43,712 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-27 11:57:43,712 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 11:57:43,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 11:57:43,750 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 11:57:43,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 385 transitions, 800 flow [2023-08-27 11:57:43,843 INFO L124 PetriNetUnfolderBase]: 113/752 cut-off events. [2023-08-27 11:57:43,843 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:57:43,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 752 events. 113/752 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3360 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 527. Up to 16 conditions per place. [2023-08-27 11:57:43,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 385 transitions, 800 flow [2023-08-27 11:57:43,856 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 383 transitions, 796 flow [2023-08-27 11:57:43,856 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:57:43,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 383 transitions, 796 flow [2023-08-27 11:57:43,857 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 383 transitions, 796 flow [2023-08-27 11:57:43,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 383 transitions, 796 flow [2023-08-27 11:57:43,947 INFO L124 PetriNetUnfolderBase]: 112/750 cut-off events. [2023-08-27 11:57:43,947 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 11:57:43,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 750 events. 112/750 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3391 event pairs, 1 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 525. Up to 16 conditions per place. [2023-08-27 11:57:43,980 INFO L119 LiptonReduction]: Number of co-enabled transitions 72036 [2023-08-27 11:57:51,413 INFO L134 LiptonReduction]: Checked pairs total: 174533 [2023-08-27 11:57:51,414 INFO L136 LiptonReduction]: Total number of compositions: 369 [2023-08-27 11:57:51,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:57:51,415 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;@125df31c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:57:51,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-27 11:57:51,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:57:51,416 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 11:57:51,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:57:51,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:57:51,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 11:57:51,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 11:57:51,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:57:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2956, now seen corresponding path program 1 times [2023-08-27 11:57:51,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:57:51,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522725543] [2023-08-27 11:57:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:57:51,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:57:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:57:51,421 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 11:57:51,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:57:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522725543] [2023-08-27 11:57:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522725543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:57:51,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:57:51,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 11:57:51,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383661171] [2023-08-27 11:57:51,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:57:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 11:57:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:57:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 11:57:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 11:57:51,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 754 [2023-08-27 11:57:51,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 153 transitions, 336 flow. Second operand has 2 states, 2 states have (on average 325.5) internal successors, (651), 2 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:57:51,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:57:51,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 754 [2023-08-27 11:57:51,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:58:41,487 INFO L124 PetriNetUnfolderBase]: 662226/913639 cut-off events. [2023-08-27 11:58:41,488 INFO L125 PetriNetUnfolderBase]: For 5670/5670 co-relation queries the response was YES. [2023-08-27 11:58:42,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1789346 conditions, 913639 events. 662226/913639 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 24206. Compared 7623121 event pairs, 638730 based on Foata normal form. 109130/740313 useless extension candidates. Maximal degree in co-relation 257118. Up to 872315 conditions per place. [2023-08-27 11:58:45,777 INFO L140 encePairwiseOnDemand]: 708/754 looper letters, 93 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2023-08-27 11:58:45,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 430 flow [2023-08-27 11:58:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 11:58:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 11:58:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 789 transitions. [2023-08-27 11:58:45,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523209549071618 [2023-08-27 11:58:45,779 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 789 transitions. [2023-08-27 11:58:45,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 789 transitions. [2023-08-27 11:58:45,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:58:45,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 789 transitions. [2023-08-27 11:58:45,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 394.5) internal successors, (789), 2 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:58:45,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 754.0) internal successors, (2262), 3 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:58:45,781 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 754.0) internal successors, (2262), 3 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:58:45,781 INFO L175 Difference]: Start difference. First operand has 111 places, 153 transitions, 336 flow. Second operand 2 states and 789 transitions. [2023-08-27 11:58:45,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 430 flow [2023-08-27 11:58:45,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:58:45,787 INFO L231 Difference]: Finished difference. Result has 108 places, 107 transitions, 244 flow [2023-08-27 11:58:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=244, PETRI_PLACES=108, PETRI_TRANSITIONS=107} [2023-08-27 11:58:45,788 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2023-08-27 11:58:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 244 flow [2023-08-27 11:58:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 325.5) internal successors, (651), 2 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:58:45,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:58:45,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:58:45,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 11:58:45,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 11:58:45,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:58:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1474804804, now seen corresponding path program 1 times [2023-08-27 11:58:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:58:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130584589] [2023-08-27 11:58:45,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:58:45,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:58:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:58:45,813 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 11:58:45,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:58:45,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130584589] [2023-08-27 11:58:45,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130584589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:58:45,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:58:45,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 11:58:45,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054836312] [2023-08-27 11:58:45,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:58:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:58:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:58:45,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:58:45,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:58:45,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 754 [2023-08-27 11:58:45,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:58:45,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:58:45,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 754 [2023-08-27 11:58:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:59:31,365 INFO L124 PetriNetUnfolderBase]: 626917/861978 cut-off events. [2023-08-27 11:59:31,366 INFO L125 PetriNetUnfolderBase]: For 4072/4072 co-relation queries the response was YES. [2023-08-27 11:59:32,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705747 conditions, 861978 events. 626917/861978 cut-off events. For 4072/4072 co-relation queries the response was YES. Maximal size of possible extension queue 22208. Compared 7326406 event pairs, 93264 based on Foata normal form. 0/596334 useless extension candidates. Maximal degree in co-relation 1705741. Up to 752596 conditions per place. [2023-08-27 11:59:35,454 INFO L140 encePairwiseOnDemand]: 749/754 looper letters, 147 selfloop transitions, 3 changer transitions 0/164 dead transitions. [2023-08-27 11:59:35,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 658 flow [2023-08-27 11:59:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:59:35,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:59:35,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1103 transitions. [2023-08-27 11:59:35,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876215738284704 [2023-08-27 11:59:35,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1103 transitions. [2023-08-27 11:59:35,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1103 transitions. [2023-08-27 11:59:35,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:59:35,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1103 transitions. [2023-08-27 11:59:35,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:59:35,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:59:35,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:59:35,458 INFO L175 Difference]: Start difference. First operand has 108 places, 107 transitions, 244 flow. Second operand 3 states and 1103 transitions. [2023-08-27 11:59:35,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 658 flow [2023-08-27 11:59:35,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 164 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 11:59:35,463 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 260 flow [2023-08-27 11:59:35,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2023-08-27 11:59:35,463 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2023-08-27 11:59:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 260 flow [2023-08-27 11:59:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:59:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:59:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 11:59:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 11:59:35,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 11:59:35,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:59:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1474804932, now seen corresponding path program 1 times [2023-08-27 11:59:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:59:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167345768] [2023-08-27 11:59:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:59:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:59:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:59:35,494 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 11:59:35,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:59:35,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167345768] [2023-08-27 11:59:35,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167345768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:59:35,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:59:35,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:59:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396123717] [2023-08-27 11:59:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:59:35,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:59:35,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:59:35,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:59:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:59:35,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 754 [2023-08-27 11:59:35,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:59:35,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:59:35,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 754 [2023-08-27 11:59:35,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:00:33,968 INFO L124 PetriNetUnfolderBase]: 638721/880504 cut-off events. [2023-08-27 12:00:33,968 INFO L125 PetriNetUnfolderBase]: For 63581/63581 co-relation queries the response was YES. [2023-08-27 12:00:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766399 conditions, 880504 events. 638721/880504 cut-off events. For 63581/63581 co-relation queries the response was YES. Maximal size of possible extension queue 22804. Compared 7281882 event pairs, 403631 based on Foata normal form. 21/630523 useless extension candidates. Maximal degree in co-relation 1766391. Up to 840312 conditions per place. [2023-08-27 12:00:39,222 INFO L140 encePairwiseOnDemand]: 751/754 looper letters, 112 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-27 12:00:39,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 128 transitions, 534 flow [2023-08-27 12:00:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:00:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:00:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1066 transitions. [2023-08-27 12:00:39,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2023-08-27 12:00:39,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1066 transitions. [2023-08-27 12:00:39,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1066 transitions. [2023-08-27 12:00:39,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:00:39,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1066 transitions. [2023-08-27 12:00:39,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.3333333333333) internal successors, (1066), 3 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:00:39,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:00:39,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:00:39,227 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 260 flow. Second operand 3 states and 1066 transitions. [2023-08-27 12:00:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 128 transitions, 534 flow [2023-08-27 12:00:39,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 128 transitions, 526 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 12:00:39,286 INFO L231 Difference]: Finished difference. Result has 112 places, 108 transitions, 268 flow [2023-08-27 12:00:39,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=112, PETRI_TRANSITIONS=108} [2023-08-27 12:00:39,286 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 1 predicate places. [2023-08-27 12:00:39,286 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 108 transitions, 268 flow [2023-08-27 12:00:39,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:00:39,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:00:39,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:00:39,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-27 12:00:39,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:00:39,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:00:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 64398761, now seen corresponding path program 1 times [2023-08-27 12:00:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:00:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797814769] [2023-08-27 12:00:39,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:00:39,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:00:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:00:39,405 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 12:00:39,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:00:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797814769] [2023-08-27 12:00:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797814769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:00:39,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:00:39,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:00:39,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441373912] [2023-08-27 12:00:39,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:00:39,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:00:39,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:00:39,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:00:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:00:39,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 754 [2023-08-27 12:00:39,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 108 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:00:39,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:00:39,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 754 [2023-08-27 12:00:39,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:01:48,080 INFO L124 PetriNetUnfolderBase]: 806677/1122693 cut-off events. [2023-08-27 12:01:48,080 INFO L125 PetriNetUnfolderBase]: For 60215/60215 co-relation queries the response was YES. [2023-08-27 12:01:50,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278394 conditions, 1122693 events. 806677/1122693 cut-off events. For 60215/60215 co-relation queries the response was YES. Maximal size of possible extension queue 32514. Compared 9735286 event pairs, 253646 based on Foata normal form. 0/834291 useless extension candidates. Maximal degree in co-relation 2278385. Up to 800174 conditions per place. [2023-08-27 12:01:54,014 INFO L140 encePairwiseOnDemand]: 725/754 looper letters, 207 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2023-08-27 12:01:54,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 238 transitions, 1040 flow [2023-08-27 12:01:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 12:01:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 12:01:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1314 transitions. [2023-08-27 12:01:54,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567639257294427 [2023-08-27 12:01:54,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1314 transitions. [2023-08-27 12:01:54,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1314 transitions. [2023-08-27 12:01:54,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:01:54,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1314 transitions. [2023-08-27 12:01:54,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 328.5) internal successors, (1314), 4 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:01:54,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 754.0) internal successors, (3770), 5 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:01:54,021 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 754.0) internal successors, (3770), 5 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:01:54,021 INFO L175 Difference]: Start difference. First operand has 112 places, 108 transitions, 268 flow. Second operand 4 states and 1314 transitions. [2023-08-27 12:01:54,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 238 transitions, 1040 flow [2023-08-27 12:01:54,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 238 transitions, 1037 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:01:54,106 INFO L231 Difference]: Finished difference. Result has 117 places, 125 transitions, 448 flow [2023-08-27 12:01:54,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=117, PETRI_TRANSITIONS=125} [2023-08-27 12:01:54,107 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 6 predicate places. [2023-08-27 12:01:54,107 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 125 transitions, 448 flow [2023-08-27 12:01:54,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 268.75) internal successors, (1075), 4 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:01:54,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:01:54,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-27 12:01:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 12:01:54,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:01:54,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:01:54,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1682804312, now seen corresponding path program 1 times [2023-08-27 12:01:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:01:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103449014] [2023-08-27 12:01:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:01:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:01:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:01:54,135 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 12:01:54,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:01:54,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103449014] [2023-08-27 12:01:54,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103449014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:01:54,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:01:54,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 12:01:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633507230] [2023-08-27 12:01:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:01:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:01:54,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:01:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:01:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:01:54,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 754 [2023-08-27 12:01:54,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 125 transitions, 448 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:01:54,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:01:54,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 754 [2023-08-27 12:01:54,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:03:09,816 INFO L124 PetriNetUnfolderBase]: 741684/1044131 cut-off events. [2023-08-27 12:03:09,817 INFO L125 PetriNetUnfolderBase]: For 413882/413900 co-relation queries the response was YES. [2023-08-27 12:03:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2540462 conditions, 1044131 events. 741684/1044131 cut-off events. For 413882/413900 co-relation queries the response was YES. Maximal size of possible extension queue 30825. Compared 9514355 event pairs, 160820 based on Foata normal form. 9888/890498 useless extension candidates. Maximal degree in co-relation 2540451. Up to 916533 conditions per place. [2023-08-27 12:03:16,139 INFO L140 encePairwiseOnDemand]: 751/754 looper letters, 177 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2023-08-27 12:03:16,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 193 transitions, 1054 flow [2023-08-27 12:03:16,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:03:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:03:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2023-08-27 12:03:16,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48629531388152075 [2023-08-27 12:03:16,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2023-08-27 12:03:16,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2023-08-27 12:03:16,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:03:16,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2023-08-27 12:03:16,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:16,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:16,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:16,143 INFO L175 Difference]: Start difference. First operand has 117 places, 125 transitions, 448 flow. Second operand 3 states and 1100 transitions. [2023-08-27 12:03:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 193 transitions, 1054 flow [2023-08-27 12:03:16,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 193 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 12:03:16,287 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 448 flow [2023-08-27 12:03:16,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2023-08-27 12:03:16,288 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 7 predicate places. [2023-08-27 12:03:16,288 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 448 flow [2023-08-27 12:03:16,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:16,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:03:16,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:03:16,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 12:03:16,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:03:16,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:03:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1682375184, now seen corresponding path program 1 times [2023-08-27 12:03:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:03:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133509363] [2023-08-27 12:03:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:16,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:03:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:16,326 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 12:03:16,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:03:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133509363] [2023-08-27 12:03:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133509363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:03:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888396095] [2023-08-27 12:03:16,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:16,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:03:16,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:03:16,333 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 12:03:16,357 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 12:03:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:16,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 12:03:16,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:03:16,666 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 12:03:16,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:03:16,680 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 12:03:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888396095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:03:16,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:03:16,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-27 12:03:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538578922] [2023-08-27 12:03:16,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:03:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 12:03:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:03:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 12:03:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:03:16,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 754 [2023-08-27 12:03:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 319.1666666666667) internal successors, (1915), 6 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:16,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:03:16,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 754 [2023-08-27 12:03:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:03:23,538 INFO L124 PetriNetUnfolderBase]: 70280/108710 cut-off events. [2023-08-27 12:03:23,539 INFO L125 PetriNetUnfolderBase]: For 84598/84664 co-relation queries the response was YES. [2023-08-27 12:03:23,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313524 conditions, 108710 events. 70280/108710 cut-off events. For 84598/84664 co-relation queries the response was YES. Maximal size of possible extension queue 4716. Compared 934599 event pairs, 6995 based on Foata normal form. 9954/108636 useless extension candidates. Maximal degree in co-relation 313512. Up to 70415 conditions per place. [2023-08-27 12:03:24,117 INFO L140 encePairwiseOnDemand]: 751/754 looper letters, 208 selfloop transitions, 4 changer transitions 0/223 dead transitions. [2023-08-27 12:03:24,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 223 transitions, 1247 flow [2023-08-27 12:03:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:03:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:03:24,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2085 transitions. [2023-08-27 12:03:24,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608753315649867 [2023-08-27 12:03:24,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2085 transitions. [2023-08-27 12:03:24,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2085 transitions. [2023-08-27 12:03:24,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:03:24,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2085 transitions. [2023-08-27 12:03:24,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 347.5) internal successors, (2085), 6 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:24,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 754.0) internal successors, (5278), 7 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:24,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 754.0) internal successors, (5278), 7 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:24,124 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 448 flow. Second operand 6 states and 2085 transitions. [2023-08-27 12:03:24,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 223 transitions, 1247 flow [2023-08-27 12:03:24,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 223 transitions, 1240 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 12:03:24,174 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 350 flow [2023-08-27 12:03:24,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-27 12:03:24,174 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -16 predicate places. [2023-08-27 12:03:24,174 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 350 flow [2023-08-27 12:03:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.1666666666667) internal successors, (1915), 6 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:24,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:03:24,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:03:24,180 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 12:03:24,375 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,SelfDestructingSolverStorable39 [2023-08-27 12:03:24,376 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:03:24,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:03:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1806239285, now seen corresponding path program 1 times [2023-08-27 12:03:24,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:03:24,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424106438] [2023-08-27 12:03:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:03:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:24,431 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 12:03:24,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:03:24,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424106438] [2023-08-27 12:03:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424106438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:03:24,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:03:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:03:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241663730] [2023-08-27 12:03:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:03:24,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:03:24,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:03:24,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:03:24,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:03:24,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 754 [2023-08-27 12:03:24,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 267.75) internal successors, (1071), 4 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:24,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:03:24,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 754 [2023-08-27 12:03:24,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:03:34,617 INFO L124 PetriNetUnfolderBase]: 102541/153235 cut-off events. [2023-08-27 12:03:34,618 INFO L125 PetriNetUnfolderBase]: For 156556/156579 co-relation queries the response was YES. [2023-08-27 12:03:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432614 conditions, 153235 events. 102541/153235 cut-off events. For 156556/156579 co-relation queries the response was YES. Maximal size of possible extension queue 5994. Compared 1304122 event pairs, 31745 based on Foata normal form. 4/140826 useless extension candidates. Maximal degree in co-relation 432602. Up to 70503 conditions per place. [2023-08-27 12:03:35,556 INFO L140 encePairwiseOnDemand]: 731/754 looper letters, 194 selfloop transitions, 51 changer transitions 0/255 dead transitions. [2023-08-27 12:03:35,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 255 transitions, 1482 flow [2023-08-27 12:03:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 12:03:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 12:03:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2023-08-27 12:03:35,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40716180371352784 [2023-08-27 12:03:35,558 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2023-08-27 12:03:35,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2023-08-27 12:03:35,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:03:35,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2023-08-27 12:03:35,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:35,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 754.0) internal successors, (4524), 6 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:35,561 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 754.0) internal successors, (4524), 6 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:35,561 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 350 flow. Second operand 5 states and 1535 transitions. [2023-08-27 12:03:35,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 255 transitions, 1482 flow [2023-08-27 12:03:35,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 255 transitions, 1457 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 12:03:35,939 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 835 flow [2023-08-27 12:03:35,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=835, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2023-08-27 12:03:35,940 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -11 predicate places. [2023-08-27 12:03:35,940 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 835 flow [2023-08-27 12:03:35,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.75) internal successors, (1071), 4 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:35,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:03:35,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:03:35,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 12:03:35,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:03:35,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:03:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1806239286, now seen corresponding path program 1 times [2023-08-27 12:03:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:03:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199855698] [2023-08-27 12:03:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:35,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:03:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:36,055 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 12:03:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:03:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199855698] [2023-08-27 12:03:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199855698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:03:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:03:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:03:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199011707] [2023-08-27 12:03:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:03:36,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 12:03:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:03:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 12:03:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 12:03:36,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 754 [2023-08-27 12:03:36,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 835 flow. Second operand has 6 states, 6 states have (on average 262.8333333333333) internal successors, (1577), 6 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:36,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:03:36,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 754 [2023-08-27 12:03:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:03:50,571 INFO L124 PetriNetUnfolderBase]: 121034/182970 cut-off events. [2023-08-27 12:03:50,571 INFO L125 PetriNetUnfolderBase]: For 370628/370760 co-relation queries the response was YES. [2023-08-27 12:03:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611522 conditions, 182970 events. 121034/182970 cut-off events. For 370628/370760 co-relation queries the response was YES. Maximal size of possible extension queue 7343. Compared 1613903 event pairs, 24287 based on Foata normal form. 4335/180777 useless extension candidates. Maximal degree in co-relation 611508. Up to 103546 conditions per place. [2023-08-27 12:03:51,845 INFO L140 encePairwiseOnDemand]: 729/754 looper letters, 345 selfloop transitions, 86 changer transitions 0/441 dead transitions. [2023-08-27 12:03:51,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 441 transitions, 3111 flow [2023-08-27 12:03:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 12:03:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 12:03:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2696 transitions. [2023-08-27 12:03:51,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972885352195697 [2023-08-27 12:03:51,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2696 transitions. [2023-08-27 12:03:51,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2696 transitions. [2023-08-27 12:03:51,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:03:51,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2696 transitions. [2023-08-27 12:03:51,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 299.55555555555554) internal successors, (2696), 9 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:51,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 754.0) internal successors, (7540), 10 states have internal predecessors, (7540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:51,855 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 754.0) internal successors, (7540), 10 states have internal predecessors, (7540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:51,855 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 835 flow. Second operand 9 states and 2696 transitions. [2023-08-27 12:03:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 441 transitions, 3111 flow [2023-08-27 12:03:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 441 transitions, 3111 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 12:03:52,276 INFO L231 Difference]: Finished difference. Result has 115 places, 193 transitions, 1781 flow [2023-08-27 12:03:52,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1781, PETRI_PLACES=115, PETRI_TRANSITIONS=193} [2023-08-27 12:03:52,277 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 4 predicate places. [2023-08-27 12:03:52,277 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 193 transitions, 1781 flow [2023-08-27 12:03:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.8333333333333) internal successors, (1577), 6 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:52,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:03:52,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:03:52,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 12:03:52,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:03:52,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:03:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2131098519, now seen corresponding path program 1 times [2023-08-27 12:03:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:03:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729173118] [2023-08-27 12:03:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:03:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:52,489 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 12:03:52,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:03:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729173118] [2023-08-27 12:03:52,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729173118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:03:52,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752526532] [2023-08-27 12:03:52,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:03:52,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:03:52,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:03:52,492 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 12:03:52,493 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 12:03:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:03:52,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 12:03:52,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:03:52,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:03:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:03:52,976 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-27 12:03:52,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-27 12:03:52,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:03:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:03:53,004 INFO L322 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-27 12:03:53,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-27 12:03:53,143 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 12:03:53,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 12:03:53,208 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 12:03:53,208 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 12:03:53,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752526532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:03:53,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 12:03:53,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 9 [2023-08-27 12:03:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837331697] [2023-08-27 12:03:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:03:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 12:03:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:03:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 12:03:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-08-27 12:03:53,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 754 [2023-08-27 12:03:53,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 193 transitions, 1781 flow. Second operand has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:03:53,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:03:53,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 754 [2023-08-27 12:03:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:04:10,567 INFO L124 PetriNetUnfolderBase]: 124635/189515 cut-off events. [2023-08-27 12:04:10,567 INFO L125 PetriNetUnfolderBase]: For 721779/721983 co-relation queries the response was YES. [2023-08-27 12:04:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736138 conditions, 189515 events. 124635/189515 cut-off events. For 721779/721983 co-relation queries the response was YES. Maximal size of possible extension queue 7477. Compared 1688483 event pairs, 54962 based on Foata normal form. 1906/184993 useless extension candidates. Maximal degree in co-relation 736117. Up to 113854 conditions per place. [2023-08-27 12:04:12,184 INFO L140 encePairwiseOnDemand]: 732/754 looper letters, 278 selfloop transitions, 69 changer transitions 0/357 dead transitions. [2023-08-27 12:04:12,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 357 transitions, 3618 flow [2023-08-27 12:04:12,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:04:12,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:04:12,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1763 transitions. [2023-08-27 12:04:12,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896993810786914 [2023-08-27 12:04:12,186 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1763 transitions. [2023-08-27 12:04:12,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1763 transitions. [2023-08-27 12:04:12,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:04:12,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1763 transitions. [2023-08-27 12:04:12,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.8333333333333) internal successors, (1763), 6 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:12,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 754.0) internal successors, (5278), 7 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:12,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 754.0) internal successors, (5278), 7 states have internal predecessors, (5278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:12,191 INFO L175 Difference]: Start difference. First operand has 115 places, 193 transitions, 1781 flow. Second operand 6 states and 1763 transitions. [2023-08-27 12:04:12,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 357 transitions, 3618 flow [2023-08-27 12:04:18,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 357 transitions, 3553 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 12:04:18,693 INFO L231 Difference]: Finished difference. Result has 122 places, 231 transitions, 2521 flow [2023-08-27 12:04:18,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2521, PETRI_PLACES=122, PETRI_TRANSITIONS=231} [2023-08-27 12:04:18,694 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 11 predicate places. [2023-08-27 12:04:18,694 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 231 transitions, 2521 flow [2023-08-27 12:04:18,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.1666666666667) internal successors, (1579), 6 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:18,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:04:18,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:04:18,700 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 12:04:18,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:04:18,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:04:18,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:04:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2131098520, now seen corresponding path program 1 times [2023-08-27 12:04:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:04:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604231650] [2023-08-27 12:04:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:04:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:04:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:04:19,040 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 12:04:19,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:04:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604231650] [2023-08-27 12:04:19,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604231650] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:04:19,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780694047] [2023-08-27 12:04:19,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:04:19,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:04:19,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:04:19,045 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 12:04:19,049 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 12:04:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:04:19,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 12:04:19,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:04:19,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:19,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:19,371 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-27 12:04:19,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-27 12:04:19,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:19,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:19,439 INFO L322 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-27 12:04:19,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-27 12:04:19,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:19,544 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 12:04:20,311 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-27 12:04:20,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:04:20,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 12:04:20,889 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 12:04:20,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:04:20,923 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1317 (Array Int Int)) (v_ArrVal_1316 Int)) (or (< v_ArrVal_1316 (+ |c_t_funThread1of3ForFork0_#t~post7#1| 1)) (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store (select |c_#memory_int| |c_~#A~0.base|) |c_~#A~0.offset| v_ArrVal_1316)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1317) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)))) is different from false [2023-08-27 12:04:20,933 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1317 (Array Int Int)) (v_ArrVal_1316 Int)) (let ((.cse0 (select |c_#memory_int| |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#A~0.base| (store .cse0 |c_~#A~0.offset| v_ArrVal_1316)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1317) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_1316 (+ (select .cse0 |c_~#A~0.offset|) 1))))) is different from false [2023-08-27 12:04:20,972 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1317 (Array Int Int)) (v_ArrVal_1314 (Array Int Int)) (v_ArrVal_1316 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1314))) (let ((.cse1 (select .cse0 |c_~#A~0.base|))) (or (< 0 (+ (select (select (store (store .cse0 |c_~#A~0.base| (store .cse1 |c_~#A~0.offset| v_ArrVal_1316)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1317) |c_~#A~0.base|) |c_~#A~0.offset|) 2147483648)) (< v_ArrVal_1316 (+ (select .cse1 |c_~#A~0.offset|) 1)))))) is different from false [2023-08-27 12:04:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-27 12:04:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780694047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:04:20,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:04:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 13 [2023-08-27 12:04:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364172634] [2023-08-27 12:04:20,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:04:20,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 12:04:20,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:04:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 12:04:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=93, Unknown=3, NotChecked=66, Total=210 [2023-08-27 12:04:20,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 754 [2023-08-27 12:04:20,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 231 transitions, 2521 flow. Second operand has 15 states, 15 states have (on average 263.6) internal successors, (3954), 15 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:20,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:04:20,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 754 [2023-08-27 12:04:20,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:04:42,181 INFO L124 PetriNetUnfolderBase]: 130164/199966 cut-off events. [2023-08-27 12:04:42,182 INFO L125 PetriNetUnfolderBase]: For 943663/943792 co-relation queries the response was YES. [2023-08-27 12:04:43,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822375 conditions, 199966 events. 130164/199966 cut-off events. For 943663/943792 co-relation queries the response was YES. Maximal size of possible extension queue 7940. Compared 1821807 event pairs, 29139 based on Foata normal form. 2360/195730 useless extension candidates. Maximal degree in co-relation 822349. Up to 106004 conditions per place. [2023-08-27 12:04:43,988 INFO L140 encePairwiseOnDemand]: 729/754 looper letters, 501 selfloop transitions, 191 changer transitions 6/708 dead transitions. [2023-08-27 12:04:43,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 708 transitions, 7325 flow [2023-08-27 12:04:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 12:04:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 12:04:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3854 transitions. [2023-08-27 12:04:43,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931850642725974 [2023-08-27 12:04:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3854 transitions. [2023-08-27 12:04:43,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3854 transitions. [2023-08-27 12:04:43,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:04:43,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3854 transitions. [2023-08-27 12:04:43,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 296.46153846153845) internal successors, (3854), 13 states have internal predecessors, (3854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:44,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 754.0) internal successors, (10556), 14 states have internal predecessors, (10556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:44,004 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 754.0) internal successors, (10556), 14 states have internal predecessors, (10556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:04:44,005 INFO L175 Difference]: Start difference. First operand has 122 places, 231 transitions, 2521 flow. Second operand 13 states and 3854 transitions. [2023-08-27 12:04:44,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 708 transitions, 7325 flow [2023-08-27 12:05:01,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 708 transitions, 7298 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-27 12:05:01,182 INFO L231 Difference]: Finished difference. Result has 143 places, 353 transitions, 5086 flow [2023-08-27 12:05:01,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5086, PETRI_PLACES=143, PETRI_TRANSITIONS=353} [2023-08-27 12:05:01,183 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 32 predicate places. [2023-08-27 12:05:01,183 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 353 transitions, 5086 flow [2023-08-27 12:05:01,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 263.6) internal successors, (3954), 15 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:05:01,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:05:01,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:05:01,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 12:05:01,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:05:01,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:05:01,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:05:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1644090218, now seen corresponding path program 1 times [2023-08-27 12:05:01,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:05:01,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418923943] [2023-08-27 12:05:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:05:01,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:05:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:05:01,528 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 12:05:01,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:05:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418923943] [2023-08-27 12:05:01,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418923943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 12:05:01,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964235816] [2023-08-27 12:05:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:05:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 12:05:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:05:01,533 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 12:05:01,536 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 12:05:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:05:01,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 12:05:01,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 12:05:01,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:01,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:01,938 INFO L322 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-27 12:05:01,938 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 38 [2023-08-27 12:05:02,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:02,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:02,015 INFO L322 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-27 12:05:02,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2023-08-27 12:05:02,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:02,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 12:05:02,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 12:05:02,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 141 [2023-08-27 12:05:02,967 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 23 select indices, 23 select index equivalence classes, 35 disjoint index pairs (out of 253 index pairs), introduced 23 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 231 [2023-08-27 12:05:03,369 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 12:05:03,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 12:05:03,406 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1367 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1367) |c_~#A~0.base|) |c_~#A~0.offset|)))) is different from false [2023-08-27 12:05:03,414 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 12:05:03,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964235816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 12:05:03,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 12:05:03,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-08-27 12:05:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136834219] [2023-08-27 12:05:03,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 12:05:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 12:05:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:05:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 12:05:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=108, Unknown=1, NotChecked=22, Total=182 [2023-08-27 12:05:03,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 754 [2023-08-27 12:05:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 353 transitions, 5086 flow. Second operand has 14 states, 14 states have (on average 263.7857142857143) internal successors, (3693), 14 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:05:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:05:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 754 [2023-08-27 12:05:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:05:37,169 INFO L124 PetriNetUnfolderBase]: 165808/252760 cut-off events. [2023-08-27 12:05:37,169 INFO L125 PetriNetUnfolderBase]: For 1905160/1905332 co-relation queries the response was YES. [2023-08-27 12:05:38,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175616 conditions, 252760 events. 165808/252760 cut-off events. For 1905160/1905332 co-relation queries the response was YES. Maximal size of possible extension queue 9773. Compared 2322274 event pairs, 26219 based on Foata normal form. 4101/249563 useless extension candidates. Maximal degree in co-relation 1175581. Up to 111264 conditions per place. [2023-08-27 12:05:40,069 INFO L140 encePairwiseOnDemand]: 728/754 looper letters, 806 selfloop transitions, 567 changer transitions 5/1388 dead transitions. [2023-08-27 12:05:40,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 1388 transitions, 18501 flow [2023-08-27 12:05:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 12:05:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 12:05:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5936 transitions. [2023-08-27 12:05:40,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39363395225464193 [2023-08-27 12:05:40,074 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5936 transitions. [2023-08-27 12:05:40,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5936 transitions. [2023-08-27 12:05:40,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:05:40,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5936 transitions. [2023-08-27 12:05:40,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 296.8) internal successors, (5936), 20 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:05:40,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 754.0) internal successors, (15834), 21 states have internal predecessors, (15834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:05:40,088 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 754.0) internal successors, (15834), 21 states have internal predecessors, (15834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:05:40,088 INFO L175 Difference]: Start difference. First operand has 143 places, 353 transitions, 5086 flow. Second operand 20 states and 5936 transitions. [2023-08-27 12:05:40,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 1388 transitions, 18501 flow [2023-08-27 12:06:41,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1388 transitions, 18340 flow, removed 68 selfloop flow, removed 2 redundant places. [2023-08-27 12:06:41,840 INFO L231 Difference]: Finished difference. Result has 173 places, 814 transitions, 14476 flow [2023-08-27 12:06:41,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=754, PETRI_DIFFERENCE_MINUEND_FLOW=5013, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=14476, PETRI_PLACES=173, PETRI_TRANSITIONS=814} [2023-08-27 12:06:41,841 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 62 predicate places. [2023-08-27 12:06:41,841 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 814 transitions, 14476 flow [2023-08-27 12:06:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 263.7857142857143) internal successors, (3693), 14 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:06:41,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:06:41,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:06:41,847 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 12:06:42,042 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,SelfDestructingSolverStorable44 [2023-08-27 12:06:42,042 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2023-08-27 12:06:42,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:06:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1644090219, now seen corresponding path program 1 times [2023-08-27 12:06:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:06:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842042891] [2023-08-27 12:06:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:06:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:06:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:06:42,102 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 12:06:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:06:42,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842042891] [2023-08-27 12:06:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842042891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:06:42,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:06:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 12:06:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248890136] [2023-08-27 12:06:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:06:42,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 12:06:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:06:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 12:06:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 12:06:42,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 754 [2023-08-27 12:06:42,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 814 transitions, 14476 flow. Second operand has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:06:42,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:06:42,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 754 [2023-08-27 12:06:42,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 12:07:12,070 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 12:07:13,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-27 12:07:13,222 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 33 remaining) [2023-08-27 12:07:13,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 12:07:13,223 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (25 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONASSERT (24 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (22 of 33 remaining) [2023-08-27 12:07:13,223 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2023-08-27 12:07:13,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2023-08-27 12:07:13,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (4 of 33 remaining) [2023-08-27 12:07:13,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2023-08-27 12:07:13,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2023-08-27 12:07:13,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4ASSERT_VIOLATIONASSERT (1 of 33 remaining) [2023-08-27 12:07:13,225 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2023-08-27 12:07:13,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:07:13,225 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-27 12:07:13,226 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2023-08-27 12:07:13,226 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 12:07:13,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:07:13 BasicIcfg [2023-08-27 12:07:13,231 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 12:07:13,231 INFO L158 Benchmark]: Toolchain (without parser) took 631053.86ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 343.7MB in the beginning and 13.4GB in the end (delta: -13.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-27 12:07:13,231 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:07:13,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.55ms. Allocated memory is still 369.1MB. Free memory was 343.7MB in the beginning and 314.5MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 12:07:13,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.41ms. Allocated memory is still 369.1MB. Free memory was 314.5MB in the beginning and 311.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:07:13,232 INFO L158 Benchmark]: Boogie Preprocessor took 51.70ms. Allocated memory is still 369.1MB. Free memory was 311.4MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:07:13,232 INFO L158 Benchmark]: RCFGBuilder took 611.42ms. Allocated memory is still 369.1MB. Free memory was 309.2MB in the beginning and 342.7MB in the end (delta: -33.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 12:07:13,232 INFO L158 Benchmark]: TraceAbstraction took 629665.78ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 341.7MB in the beginning and 13.4GB in the end (delta: -13.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. [2023-08-27 12:07:13,233 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 369.1MB. Free memory is still 345.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 639.55ms. Allocated memory is still 369.1MB. Free memory was 343.7MB in the beginning and 314.5MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 79.41ms. Allocated memory is still 369.1MB. Free memory was 314.5MB in the beginning and 311.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.70ms. Allocated memory is still 369.1MB. Free memory was 311.4MB in the beginning and 309.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 611.42ms. Allocated memory is still 369.1MB. Free memory was 309.2MB in the beginning and 342.7MB in the end (delta: -33.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 629665.78ms. Allocated memory was 369.1MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 341.7MB in the beginning and 13.4GB in the end (delta: -13.1GB). Peak memory consumption was 8.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 212 PlacesBefore, 61 PlacesAfterwards, 238 TransitionsBefore, 82 TransitionsAfterwards, 12972 CoEnabledTransitionPairs, 10 FixpointIterations, 99 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 17 ConcurrentYvCompositions, 5 ChoiceCompositions, 251 TotalNumberOfCompositions, 32633 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13235, independent: 12660, independent conditional: 0, independent unconditional: 12660, dependent: 575, dependent conditional: 0, dependent unconditional: 575, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7046, independent: 6947, independent conditional: 0, independent unconditional: 6947, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13235, independent: 5713, independent conditional: 0, independent unconditional: 5713, dependent: 476, dependent conditional: 0, dependent unconditional: 476, unknown: 7046, unknown conditional: 0, unknown unconditional: 7046] , Statistics on independence cache: Total cache size (in pairs): 327, Positive cache size: 284, Positive conditional cache size: 0, Positive unconditional cache size: 284, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 202 PlacesBefore, 54 PlacesAfterwards, 228 TransitionsBefore, 74 TransitionsAfterwards, 12972 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 125 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 17 ConcurrentYvCompositions, 6 ChoiceCompositions, 214 TotalNumberOfCompositions, 26181 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11678, independent: 11273, independent conditional: 0, independent unconditional: 11273, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6928, independent: 6843, independent conditional: 0, independent unconditional: 6843, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11678, independent: 4430, independent conditional: 0, independent unconditional: 4430, dependent: 320, dependent conditional: 0, dependent unconditional: 320, unknown: 6928, unknown conditional: 0, unknown unconditional: 6928] , Statistics on independence cache: Total cache size (in pairs): 236, Positive cache size: 199, Positive conditional cache size: 0, Positive unconditional cache size: 199, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 273 PlacesBefore, 87 PlacesAfterwards, 312 TransitionsBefore, 118 TransitionsAfterwards, 38088 CoEnabledTransitionPairs, 7 FixpointIterations, 78 TrivialSequentialCompositions, 175 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 29 ConcurrentYvCompositions, 8 ChoiceCompositions, 295 TotalNumberOfCompositions, 82126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 35665, independent: 35033, independent conditional: 0, independent unconditional: 35033, dependent: 632, dependent conditional: 0, dependent unconditional: 632, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19858, independent: 19746, independent conditional: 0, independent unconditional: 19746, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 35665, independent: 15287, independent conditional: 0, independent unconditional: 15287, dependent: 520, dependent conditional: 0, dependent unconditional: 520, unknown: 19858, unknown conditional: 0, unknown unconditional: 19858] , Statistics on independence cache: Total cache size (in pairs): 934, Positive cache size: 879, Positive conditional cache size: 0, Positive unconditional cache size: 879, Negative cache size: 55, Negative conditional cache size: 0, Negative unconditional cache size: 55, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.4s, 269 PlacesBefore, 83 PlacesAfterwards, 308 TransitionsBefore, 115 TransitionsAfterwards, 38088 CoEnabledTransitionPairs, 8 FixpointIterations, 64 TrivialSequentialCompositions, 176 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 29 ConcurrentYvCompositions, 7 ChoiceCompositions, 281 TotalNumberOfCompositions, 89517 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 40009, independent: 39289, independent conditional: 0, independent unconditional: 39289, dependent: 720, dependent conditional: 0, dependent unconditional: 720, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20394, independent: 20247, independent conditional: 0, independent unconditional: 20247, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 40009, independent: 19042, independent conditional: 0, independent unconditional: 19042, dependent: 573, dependent conditional: 0, dependent unconditional: 573, unknown: 20394, unknown conditional: 0, unknown unconditional: 20394] , Statistics on independence cache: Total cache size (in pairs): 1165, Positive cache size: 1101, Positive conditional cache size: 0, Positive unconditional cache size: 1101, Negative cache size: 64, Negative conditional cache size: 0, Negative unconditional cache size: 64, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.6s, 332 PlacesBefore, 111 PlacesAfterwards, 383 TransitionsBefore, 153 TransitionsAfterwards, 72036 CoEnabledTransitionPairs, 8 FixpointIterations, 85 TrivialSequentialCompositions, 238 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 32 ConcurrentYvCompositions, 9 ChoiceCompositions, 369 TotalNumberOfCompositions, 174533 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 64411, independent: 63462, independent conditional: 0, independent unconditional: 63462, dependent: 949, dependent conditional: 0, dependent unconditional: 949, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 36629, independent: 36475, independent conditional: 0, independent unconditional: 36475, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 64411, independent: 26987, independent conditional: 0, independent unconditional: 26987, dependent: 795, dependent conditional: 0, dependent unconditional: 795, unknown: 36629, unknown conditional: 0, unknown unconditional: 36629] , Statistics on independence cache: Total cache size (in pairs): 962, Positive cache size: 890, Positive conditional cache size: 0, Positive unconditional cache size: 890, Negative cache size: 72, Negative conditional cache size: 0, Negative unconditional cache size: 72, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1013]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1038]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1013]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1038]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 998]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1013]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1036]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1038]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1029]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1013]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1036]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1040]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1038]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1029]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 270 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 37 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 564 IncrementalHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1 mSDtfsCounter, 564 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 107 ConstructedInterpolants, 12 QuantifiedInterpolants, 3188 SizeOfPredicates, 44 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 1/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 327 locations, 29 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.0s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1339 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1339 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 198 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 190 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4437 IncrementalHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 190 mSolverCounterUnsat, 0 mSDtfsCounter, 4437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 467 GetRequests, 282 SyntacticMatches, 13 SemanticMatches, 172 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1853occurred in iteration=11, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 697 ConstructedInterpolants, 9 QuantifiedInterpolants, 6273 SizeOfPredicates, 169 NumberOfNonLiveVariables, 2075 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 39 InterpolantComputations, 17 PerfectInterpolantSequences, 49/77 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 384 locations, 34 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 569.5s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 555.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2384 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2384 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1958 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 252 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4965 IncrementalHoareTripleChecker+Invalid, 7175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 252 mSolverCounterUnsat, 6 mSDtfsCounter, 4965 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14476occurred in iteration=11, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 198 ConstructedInterpolants, 18 QuantifiedInterpolants, 6833 SizeOfPredicates, 88 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 10/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 270 locations, 24 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 327 locations, 29 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.5s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown